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1998 SCCA Club Racing Rule Changes -- PCS


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Production Category Specifications (12.1.1)

SOURCE     STATUS       SECTION      DESCRIPTION

TB 98-02   Eff 2/1/98   C.4(?)       Addition for 1998 only:  Increase the
                                     weight of all production cars listed in
                                     the 1998 PCS by twenty pounds to
                                     compensate for roll cage modifications.

TB 98-03   Eff 3/1/98   D.4.a.1      Change the sequential transmission
                                     weight penalty to 75 lbs.

TB 98-03   Eff 3/1/98   D.10.1       In the second sentence, replace '(top
                                     of steering wheel)' with '(top of
                                     cowl)'.  The sentence will now read: 
                                     Roll cages may be of two (2) designs,
                                     low front hoop (top of cowl) or high
                                     front hoop (top of windshield).

TB 98-04   Eff 4/1/98   D.10.1       Change the last sentence to read: 
                                     Requests for approvals of alternate
                                     structures which comply with the basic
                                     provisions of 12.1.1.D.10.1 of the PCS
                                     and the simultaneous applied loads
                                     specified in 18.4.5 of the GCR must be
                                     received prior to 1/1/99.

TB 98-03   Eff 3/1/98   D.10.1.B.4   Change the first sentence to read:  It
                                     is recommended that a low front hoop be
                                     no lower than the top of the steering
                                     wheel.

TB 98-03   Eff 3/1/98   D.10.1.E     Remove the last sentence (The main
                                     hoop, front hoop, side protection and
                                     all required bracing shall be the same
                                     diameter and wall thickness.).

TB 98-01   Eff 1/1/98   EP p 32-33   1990-1993 Acura Integra.  Add to the
                                     specifications as follows:
                                     -  Engine Type: 
                                     -  Bore: 81.0mm
                                     -  Stoke: 89.0mm
                                     -  Displacement: 1835cc
                                     -  Head Material: 
                                     -  Block Material: 
                                     -  Valve Head Diameter: (I) 31.0mm
                                     -                       (E) 28.0mm
                                     -  Induction: 
                                     -  Number of Forward Speeds: 
                                     -  Wheelbase: 96.5"
                                     -  Track: (F) 
                                               (R) 
                                     -  Wheels: 14" x 7"
                                     -  Brakes: (F) 242mm Disc
                                                (R) 239mm Disc
                                     -  Weight: 2200 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications).
                                     -  Restrictions:  Alternate transmission
                                        permitted, add 100 lbs.  Modified or
                                        relocated suspension pick-up
                                        (mounting) points, add 200 lbs. 
                                        (Refer to current ITCS Sections
                                        12.1.4.D.5.c and d for allowable
                                        suspension modifications).

TB 98-04   Eff 4/1/98   EP p 32-33   1990-1993 Acura Integra.  Add to Notes: 
                                     Alternate (synchro) transmission, add
                                     50 lbs; alternate dog-ring
                                     transmission, add 100 lbs; alternate
                                     sequentially shifted transmission, add
                                     175 lbs.

TB 98-06   Eff 6/1/98   EP p 32-33   BMW 2002 / 2002tii.  Correct
                                     specifications as follows:  Wheels: 13"
                                     x 7", 15" x 7"; Weight: 2100 lbs.

TB 98-02   Eff 2/1/98   EP p 34-35   Fiat 124 Sport Spider 1600 and 124
                                     Spider 2000.  Add:  Choke size: 32mm. 
                                     Delete: Alternate weight for 13"
                                     wheels.  The weight will be 2100 lbs.

TB 98-06   Eff 6/1/98   EP p 34-35   1971-1974 Ford (Mercury) Capri. 
                                     Correct specifications as follows: 
                                     Wheels: 13" x 7", 15" x 7"

TB 98-03   Eff 3/1/98   EP p 36-37   Ford Pinto 2000.  Increase automotive
                                     type sidedraft carburetor venturis to
                                     30mm.  Add 15" x 7" wheels.

TB 98-05   Eff 5/1/98   EP p 36-37   Ford Pinto 2000.  Change the
                                     specifications as follows: Trans
                                     Speeds: 4 or 5.

TB 98-03   Eff 3/1/98   EP p 36-37   1988-1991 Honda CRX Si.  Correct
                                     specifications as follows:  Wheel Size:
                                     13" x 7", 14" x 7", 15" x 7".

TB 98-01   Eff 1/1/98   EP p 36-37   Honda Prelude Si.  Add to the
                                     specifications as follows:
                                     -  Engine Type: 
                                     -  Bore: 87.0mm
                                     -  Stoke: 95.0mm
                                     -  Displacement: 2259cc
                                     -  Head Material: 
                                     -  Block Material: 
                                     -  Valve Head Diameter: (I) 34.0mm
                                     -                       (E) 29.0mm
                                     -  Induction: 
                                     -  Number of Forward Speeds: 
                                     -  Wheelbase: 100.4"
                                     -  Track: (F) 63.6"
                                               (R) 63.2"
                                     -  Wheels: 15" x 7"
                                     -  Brakes: (F) 259mm Disc
                                                (R) 259mm Disc
                                     -  Weight: 2535 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications).
                                     -  Restrictions:  Alternate transmission
                                        permitted, weight penalties included
                                        in TB 98-08.  Modified or relocated
                                        suspension pick-up (mounting) points,
                                        add 200 lbs.  (Refer to current ITCS
                                        Sections 12.1.4.D.5.c and d for
                                        allowable suspension modifications).

TB 98-03   Eff 3/1/98   EP p 36-37   Honda Prelude.  Correct model
                                     designation on p 37 from Acura Integra
                                     to Honda Prelude.    Correct
                                     specifications as follows:  Wheel Size:
                                     14" x 7", 15" x 7".

TB 98-04   Eff 4/1/98   EP p 36-37   Honda Prelude.  Add to Notes: 
                                     Alternate (synchro) transmission, add
                                     50 lbs; alternate dog-ring
                                     transmission, add 100 lbs; alternate
                                     sequentially shifted transmission, add
                                     175 lbs.

TB 98-05   Eff 5/1/98   EP p 36-37   Lotus Super Seven.  Add to Brakes Alt:
                                     (F) 9.63" disk.

TB 98-03   Eff 3/1/98   EP p 38-39   Mazda MX-5 / Miata.  Add to Notes: 
                                     Alternate Engine - Displacement:
                                     1800cc, Bore: 83.0mm, Stroke: 85.0mm. 
                                     Compression ratio limited to 12.0:1. 
                                     Cylinder head preparation per Improved
                                     Touring specifications except that the
                                     cylinder head may be milled to achieve
                                     maximum compression ratio (i.e. no
                                     porting, stock valve job, no chamber
                                     modifications).  Carburetor preparation
                                     per current Improved Touring rules.

TB 98-04   Eff 4/1/98   EP p 38-39   Mazda MX-5 / Miata.  Add to
                                     Carburetion: Fuel injection permitted. 
                                     Correct Notes for alternate 1800cc
                                     engine induction system as follows: 
                                     Carburetion:  Two (2) automotive-type
                                     carburetors with 32mm venturis.

TB 98-01   Eff 1/1/98   EP p 38-39   1979-1985 Mazda RX-7 (Classified by
                                     Tech Bulletin 97-05).  Correct the
                                     Restrictions section of Notes as
                                     follows:  Restrictions:  Alternate
                                     transmission permitted, add 100 lbs. 
                                     Modified or relocated suspension pick-
                                     up (mounting) points, add 200 lbs. 
                                     (Refer to current ITCS Sections
                                     12.1.4.D.5.c and d for allowable
                                     suspension modifications).

TB 98-03   Eff 3/1/98   EP p 38-39   1979-1985 Mazda RX-7.  Add to Notes: 
                                     Modifications (enlarging or grooving)
                                     of the water jacket in the area of the
                                     sparkplugs for cooling purposes is
                                     allowed.

TB 98-04   Eff 4/1/98   EP p 38-39   1979-1985 Mazda RX-7.  Add to Notes: 
                                     Alternate (synchro) transmission, add
                                     50 lbs; alternate dog-ring
                                     transmission, add 100 lbs; alternate
                                     sequentially shifted transmission, add
                                     175 lbs.

TB 98-07   Eff 7/1/98   EP p 38-39   1979-1985 Mazda RX-7.  Correct first
                                     sentence in Notes to read: Engine:
                                     Street Port engine only, no bridge, no
                                     peripheral, no modifications of water
                                     jackets (no eyelash port).

TB 98-04   Eff 4/1/98   EP p 38-39   MGB & MGB-GT.  Add to Notes:  Any
                                     individual runner manifold with runner
                                     length of 3.0"-4.0" measured flange to
                                     flange.

TB 98-04   Eff 4/1/98   EP p 38-39   1977-1979 Nissan 200SX SER.  Add to
                                     Notes:  Alternate (synchro)
                                     transmission, add 50 lbs; alternate
                                     dog-ring transmission, add 100 lbs;
                                     alternate sequentially shifted
                                     transmission, add 175 lbs.

TB 98-01   Eff 1/1/98   EP p 38-39   1991 Nissan Sentra SER.  Change the
                                     model years to 1990-1994.  Add to the
                                     specifications as follows:
                                     -  Engine Type: 
                                     -  Bore: 86.0mm
                                     -  Stoke: 86.0mm
                                     -  Displacement: 1998cc
                                     -  Head Material: 
                                     -  Block Material: 
                                     -  Valve Head Diameter: (I) 34.2mm
                                     -                       (E) 30.2mm
                                     -  Induction: 
                                     -  Number of Forward Speeds: 
                                     -  Wheelbase: 95.7"
                                     -  Track: (F) 60.0"
                                               (R) 59.1"
                                     -  Wheels: 13" x 7", 14" x 7", 15" x 7"
                                     -  Brakes: (F) 249mm Disc
                                                (R) 234mm Disc
                                     -  Weight: 2210 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications).
                                     -  Restrictions:  Alternate transmission
                                        permitted, add 100 lbs.  Modified or
                                        relocated suspension pick-up
                                        (mounting) points, add 200 lbs. 
                                        (Refer to current ITCS Sections
                                        12.1.4.D.5.c and d for allowable
                                        suspension modifications).

TB 98-04   Eff 4/1/98   EP p 38-39   1990-1994 Nissan Sentra SER.  Add to
                                     Notes:  Alternate (synchro)
                                     transmission, add 50 lbs; alternate
                                     dog-ring transmission, add 100 lbs;
                                     alternate sequentially shifted
                                     transmission, add 175 lbs.

TB 98-07   Eff 7/1/98   EP p 40-41   Porsche 914/4.  Add to the
                                     specifications as follows: Bore &
                                     Stoke: 94.0mm x 79.0mm, Displacement:
                                     1968cc, Valves: 1.42" (E) - 1968cc,
                                     Weight: 1968=2020 lbs.

TB 98-05   Eff 5/1/98   EP p 42-43   1985-1987 Volkswagen Golf 1780.  Add to
                                     Wheels: 15" x 7".

TB 98-05   Eff 5/1/98   EP p 42-43   Volkswagen Rabbit (includes
                                     convertible) 1715/1780.  Add to Wheels:
                                     15" x 7".

TB 98-05   Eff 5/1/98   EP p 42-43   Volkswagen Scirocco 1715/1780.  Add to
                                     Wheels: 15" x 7".

TB 98-03   Eff 3/1/98   EP p 42-43   Volvo 142/143E.  Reduce weight to 2240
                                     lbs.

TB 98-06   Eff 6/1/98   EP p 42-43   Volvo P-1800, 1800S, 1800E, 1800ES
                                     Sports Coupe.  Correct exhaust valve
                                     size to 35.0mm.

TB 98-07   Eff 7/1/98   EP           Classify 1986-1989 Acura Integra.
                                     -  Engine Type: 4 cyl DOHC
                                     -  Bore: 75.0mm
                                     -  Stoke: 90.0mm
                                     -  Displacement: 
                                     -  Head Material: Aluminum
                                     -  Block Material: Iron
                                     -  Valve Head Diameter: (I) 30.0mm
                                     -                       (E) 27.0mm
                                     -  Induction: Two (2) automotive type
                                        with 30mm venturis or original fuel
                                        injection
                                     -  Wheelbase: 96.5"
                                     -  Track: (F) 
                                               (R) 
                                     -  Wheels: 14" x 7", 15" x 7"
                                     -  Number of Forward Speeds: 5
                                     -  Brakes: (F) 242mm Disc
                                                (R) 239mm Disc
                                     -  Weight: 2000 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications). 
                                        Valve Lift: .500" max.
                                     -  Restrictions:  Alternate transmission
                                        permitted, weight penalties included
                                        in TB 98-08.  Modified or relocated
                                        suspension pick-up (mounting) points,
                                        add 200 lbs.  (Refer to current ITCS
                                        Sections 12.1.4.D.5.c and d for
                                        allowable suspension modifications).

TB 98-07   Eff 7/1/98   EP           Classify BMW Z3 1.9 (Regional only,
                                     National classification effective
                                     1/1/99).
                                     -  Engine Type: 4 cyl DOHC
                                     -  Bore: 85.1mm
                                     -  Stoke: 83.6mm
                                     -  Displacement: 1895cc
                                     -  Head Material: Aluminum
                                     -  Block Material: Iron
                                     -  Valve Head Diameter: (I) 33.0mm
                                     -                       (E) 30.5mm
                                     -  Induction: Two (2) automotive type
                                        with 30mm venturis or original fuel
                                     -  Wheelbase: 96.3"
                                     -  Track: (F) 
                                               (R) 
                                     -  Wheels: 15" x 7"
                                     -  Number of Forward Speeds: 5
                                     -  Brakes: (F) 286mm Disc
                                                (R) 280mm Disc
                                     -  Weight: 2100 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications). 
                                        Valve Lift: .500" max.
                                     -  Restrictions:  Alternate transmission
                                        permitted, weight penalties included
                                        in TB 98-08.  Modified or relocated
                                        suspension pick-up (mounting) points,
                                        add 200 lbs.  (Refer to current ITCS
                                        Sections 12.1.4.D.5.c and d for
                                        allowable suspension modifications).


TB 98-02   Eff 2/1/98   EP           Classify Datsun 240Z
                                     -  Engine Type: 
                                     -  Bore: 83.0mm
                                     -  Stoke: 73.3mm
                                     -  Displacement: 2380cc
                                     -  Head Material: Aluminum
                                     -  Block Material: Iron
                                     -  Valve Head Diameter: (I) 
                                     -                       (E) 
                                     -  Induction: Two (2) Hitachi-SU (1bbl)
                                     -  Number of Forward Speeds: 4
                                     -  Wheelbase: 90.7"
                                     -  Track: (F) 56.9"
                                               (R) 56.6"
                                     -  Wheels: 15" x 7"
                                     -  Brakes: (F) 10.7" disc
                                                (R) 9.0" drum
                                     -  Weight: 2250 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications). 
                                        Valve Lift: .500" max.  Carburetor
                                        preparation per current Improved
                                        Touring rules.
                                     -  Restrictions:  Alternate transmission
                                        permitted, add 100 lbs.  Modified or
                                        relocated suspension pick-up
                                        (mounting) points, add 200 lbs. 
                                        (Refer to current ITCS Sections
                                        12.1.4.D.5.c and d for allowable
                                        suspension modifications).

TB 98-03   Eff 3/1/98   EP           Datsun 240Z.  Add 14" x 7" wheels to
                                     the specifications.

TB 98-04   Eff 4/1/98   EP           Datsun 240Z.  Add to Notes:  Alternate
                                     (synchro) transmission, add 50 lbs;
                                     alternate dog-ring transmission, add
                                     100 lbs; alternate sequentially shifted
                                     transmission, add 175 lbs.

TB 98-02   Eff 2/1/98   EP           Classify Datsun 260Z
                                     -  Engine Type: 
                                     -  Bore: 83.0mm
                                     -  Stoke: 79.0mm
                                     -  Displacement: 2565cc
                                     -  Head Material: Aluminum
                                     -  Block Material: Iron
                                     -  Valve Head Diameter: (I) 
                                     -                       (E) 
                                     -  Induction: Two (2) Hitachi-SU (1bbl)
                                     -  Number of Forward Speeds: 4
                                     -  Wheelbase: 90.7"
                                     -  Track: (F) 56.9"
                                               (R) 56.6"
                                     -  Wheels: 15" x 7"
                                     -  Brakes: (F) 10.7" disc
                                                (R) 9.0" drum
                                     -  Weight: 2430 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications). 
                                        Valve Lift: .500" max.  Carburetor
                                        preparation per current Improved
                                        touring rules.
                                     -  Restrictions:  Alternate transmission
                                        permitted, add 100 lbs.  Modified or
                                        relocated suspension pick-up
                                        (mounting) points, add 200 lbs. 
                                        (Refer to current ITCS Sections
                                        12.1.4.D.5.c and d for allowable
                                        suspension modifications).

TB 98-02   Eff 2/1/98   EP           Classify 1994-1996 Mazda Miata MX-5
                                     -  Engine Type: 
                                     -  Bore: 83.0mm
                                     -  Stoke: 85.0mm
                                     -  Displacement: 1839cc
                                     -  Head Material: Aluminum
                                     -  Block Material: Iron
                                     -  Valve Head Diameter: (I) 31.1mm
                                     -                       (E) 28.2mm
                                     -  Induction: Two (2) automotive type
                                        side draft with 32mm venturis or
                                        original fuel injection
                                     -  Number of Forward Speeds: 5
                                     -  Wheelbase: 89.2"
                                     -  Track: (F) 58.2"
                                               (R) 58.7"
                                     -  Wheels: 15" x 7"
                                     -  Brakes: (F) 255mm disc
                                                (R) 251mm disc
                                     -  Weight: 2100 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications). 
                                        Carburetor preparation per current
                                        Improved touring rules.
                                     -  Restrictions:  Alternate transmission
                                        permitted, add 100 lbs.  Modified or
                                        relocated suspension pick-up
                                        (mounting) points, add 200 lbs. 
                                        (Refer to current ITCS Sections
                                        12.1.4.D.5.c and d for allowable
                                        suspension modifications).

TB 98-03   Eff 3/1/98   EP           Delete classification of 1994-1996
                                     Mazda Miata MX-5 in TB 98-02.

TB 98-07   Eff 7/1/98   EP           Classify 1999 Mazda Miata M2 (Regional
                                     only, National classification effective
                                     1/1/99).
                                     -  Engine Type: 
                                     -  Bore: 
                                     -  Stoke: 
                                     -  Displacement: 
                                     -  Head Material: 
                                     -  Block Material: 
                                     -  Valve Head Diameter: (I) 
                                     -                       (E) 
                                     -  Induction: 
                                     -  Wheelbase: 
                                     -  Track: (F) 
                                               (R) 
                                     -  Wheels: 
                                     -  Number of Forward Speeds: 
                                     -  Brakes: (F) 
                                                (R) 
                                     -  Weight: 2000 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications). 
                                        Valve Lift: .500" max.
                                     -  Restrictions:  Alternate transmission
                                        permitted, weight penalties included
                                        in TB 98-08.  Modified or relocated
                                        suspension pick-up (mounting) points,
                                        add 200 lbs.  (Refer to current ITCS
                                        Sections 12.1.4.D.5.c and d for
                                        allowable suspension modifications).

TB 98-07   Eff 7/1/98   EP           Classify Nissan NX-2000.
                                     -  Engine Type: 
                                     -  Bore: 86.0mm
                                     -  Stoke: 86.0mm
                                     -  Displacement: 1998cc
                                     -  Head Material: 
                                     -  Block Material: 
                                     -  Valve Head Diameter: (I) 34.2mm
                                     -                       (E) 30.2mm
                                     -  Induction: 
                                     -  Wheelbase: 95.7"
                                     -  Track: (F) 60.0"
                                               (R) 59.1"
                                     -  Wheels: 13" x 7", 14" x 7", 15" x 7"
                                     -  Number of Forward Speeds: 
                                     -  Brakes: (F) 249mm Disc
                                                (R) 234mm Disc
                                     -  Weight: 2210 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications). 
                                        Valve Lift: .500" max.
                                     -  Restrictions:  Alternate (synchro)
                                        transmission, add 50 lbs; alternate
                                        dog ring transmission, add 100 lbs;
                                        alternate sequentially shifted
                                        transmission, add 175 lbs.  Modified
                                        or relocated suspension pick-up
                                        (mounting) points, add 200 lbs. 
                                        (Refer to current ITCS Sections
                                        12.1.4.D.5.c and d for allowable
                                        suspension modifications).

TB 98-01   Eff 1/1/98   EP           Classify Nissan 200SX SER.
                                     -  Engine Type: 
                                     -  Bore: 86.0mm
                                     -  Stoke: 86.0mm
                                     -  Displacement: 1998cc
                                     -  Head Material: 
                                     -  Block Material: 
                                     -  Valve Head Diameter: (I) 34.2mm
                                     -                       (E) 30.2mm
                                     -  Induction: 
                                     -  Number of Forward Speeds: 
                                     -  Wheelbase: 95.7"
                                     -  Track: (F) 60.0"
                                               (R) 59.1"
                                     -  Wheels: 13" x 7", 14" x 7", 15" x 7"
                                     -  Brakes: (F) 249mm Disc
                                                (R) 234mm Disc
                                     -  Weight: 2210 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications).
                                     -  Restrictions:  Alternate transmission
                                        permitted, add 100 lbs.  Modified or
                                        relocated suspension pick-up
                                        (mounting) points, add 200 lbs. 
                                        (Refer to current ITCS Sections
                                        12.1.4.D.5.c and d for allowable
                                        suspension modifications).

TB 98-02   Eff 2/1/98   EP           Nissan 200SX SER.  Correct
                                     specifications as follows:
                                     -  Wheelbase: 95.7"
                                     -  Track: (F) 60.5"
                                               (R) 59.7"

TB 98-03   Eff 3/1/98   EP           Classify 1978-1981 Nissan 510.  Same
                                     specifications as Nissan 200-SX 2.0L
                                     except as follows:
                                     -  Wheelbase: 94"
                                     -  Track: (F) 58.2"
                                               (R) 57.0"

TB 98-02   Eff 2/1/98   EP           Classify Porsche 924
                                     -  Engine Type: 
                                     -  Bore: 86.5mm
                                     -  Stoke: 84.4mm
                                     -  Displacement: 1984cc
                                     -  Head Material: Aluminum
                                     -  Block Material: Iron
                                     -  Valve Head Diameter: (I) 40.0mm
                                     -                       (E) 33.0mm
                                     -  Induction: Two (2) 40mm automotive
                                        type carburetor with 30mm venturis or
                                        original fuel injection
                                     -  Number of Forward Speeds: 5
                                     -  Wheelbase: 94.5"
                                     -  Track: (F) 
                                               (R) 
                                     -  Wheels: 15" x 7"
                                     -  Brakes: (F) 10.1" disc (std)
                                                    11.1" disc (alt)
                                                (R) 9.1" drum (std)
                                                    11.4" (alt)
                                     -  Weight: 2180 lbs

TB 98-06   Eff 6/1/98   EP           Porsche 924.  Correct specifications as
                                     follows:  Brakes Alt: (F) 11.1" Disc,
                                     (R) 11.4" Disc.

TB 98-07   Eff 7/1/98   EP           Porsche 924.  Correct specifications as
                                     follows:  Carb No. and Type: Two (2)
                                     automotive type with 30mm venturis.

TB 98-03   Eff 3/1/98   EP           Classify 1982-1984 Volkswagen Jetta.
                                     -  Engine Type: 4 cyl SOHC
                                     -  Bore: 79.5mm  86.4mm
                                     -  Stoke: 81.0mm  86.4mm
                                     -  Displacement: 1715cc  1780cc
                                     -  Head Material: Aluminum
                                     -  Block Material: Iron
                                     -  Valve Head Diameter: (I) 34.0mm
                                                                 40.0mm
                                     -                       (E) 31.0mm
                                     -  Induction: One (1) 40 DCN, DCNF, or
                                        IDF w/36mm venturis, Two (2)
                                        automotive type side draft w/28mm
                                        venturis on I.R. manifold, original
                                        fuel injection, One (1) 32/36
                                        DGA/DGAV
                                     -  Wheelbase: 94.5"
                                     -  Track: (F) 57.0"
                                               (R) 55.6"
                                     -  Wheels: 13" x 7"
                                     -  Number of Forward Speeds: 5
                                     -  Brakes: (F) 239mm disc
                                                (R) 180mm x 30mm drum
                                     -  Weight: 2080 lbs
                                     -  Notes: Intake manifold unrestricted

TB 98-05   Eff 5/1/98   FP p 44-45   Fiat 124 Sport Coupe.  Decrease weight
                                     to 1875 lbs.

TB 98-05   Eff 5/1/98   FP p 44-45   -1977 Fiat 124 Sport Spider.  Decrease
                                     weight to 1875 lbs.

TB 98-05   Eff 5/1/98   FP p 46-47   Opel GT.  Decrease weight to 2020 lbs.

TB 98-06   Eff 6/1/98   FP p 46-47   Opel GT.  Decrease weight to 2000 lbs. 
                                     Correct venturi size to 30mm.

TB 98-02   Eff 2/1/98   FP p 48-49   1971-1974 Toyota Corolla.  Change
                                     specifications as follows:
                                     -  Track: (F) 54.5" 
                                               (R) 55.5"
                                     -  Wheels: 13" x 7"

TB 98-02   Eff 2/1/98   FP p 48-49   1971-1974 Toyota Corolla.  Correct
                                     carburetion as follows: One (1) 40 DCN,
                                     One (1) 40 DCNF, One (1) 32/36 DGV, One
                                     (1) 32/36 DGAV, Two (2) automotive type
                                     side draft w/28mm venturis on I.R
                                     manifold.

TB 98-05   Eff 5/1/98   FP p 48-49   Triumph Spitfire Mk IV and 1500. 
                                     Decrease weight to 1660 lbs.

TB 98-07   Eff 7/1/98   FP p 48-49   Triumph Spitfire Mk IV and 1500. 
                                     Correct weight for 1296cc engine to
                                     1600 lbs.

TB 98-02   Eff 2/1/98   FP p 48-49   Volkswagen Rabbit Cabriolet.  Add to
                                     Notes:  Factory roll bar must be
                                     removed.

TB 98-05   Eff 5/1/98   FP p 48-49   Volkswagen Rabbit (includes
                                     convertible).  Increase choke to 30mm.

TB 98-05   Eff 5/1/98   FP p 48-49   Volkswagen Scirocco.  Increase choke to
                                     30mm.

TB 98-02   Eff 2/1/98   FP           Classify 1986-1989 Acura Integra 1.6.
                                     -  Engine Type: 
                                     -  Bore: 75.0mm
                                     -  Stoke: 90.0mm
                                     -  Displacement: 1598cc
                                     -  Head Material: Aluminum
                                     -  Block Material: Aluminum
                                     -  Valve Head Diameter: (I) 30.0mm
                                     -                       (E) 27.0mm
                                     -  Induction: Two (2) 40mm automotive
                                        type with 28mm venturis or original
                                        fuel injection
                                     -  Number of Forward Speeds: 5
                                     -  Wheelbase: 96.5"
                                     -  Track: (F) 
                                               (R) 
                                     -  Wheels: 14" x 7"
                                     -  Brakes: (F) 242mm disc
                                                (R) 239mm disc
                                     -  Weight: 2180 lbs

TB 98-04   Eff 4/1/98   FP           Reinstate Lotus 7 and 7 America
                                     (Inadvertently dropped from current
                                     PCS).
                                     -  Engine Type: 4 cyl OHV
                                     -  Bore: 3.19"  2.48"
                                     -  Stoke: 1.91"  3.00"
                                     -  Displacement: 997cc  948cc
                                     -  Head Material: iron
                                     -  Block Material: iron
                                     -  Valve Head Diameter: (I) 1.30"  1.16"
                                     -                       (E) 1.20"  1.00"
                                     -  Induction: 997cc - Two (2) 1.25" SU
                                                   948cc - Two (2) 1.25" or
                                                           1.125" SU or
                                                           Stromberg
                                     -  Wheelbase: 88.0"
                                     -  Track: (F) 50.9"
                                               (R) 52.0"
                                     -  Wheels: 13" x 6"
                                     -  Number of Forward Speeds: 
                                     -  Brakes: (F) 8" Drum
                                                (R) 7" Drum
                                     -  Weight: 1045 lbs
                                     -  Notes:  Alternate front brakes - P/N
                                        CAO-B405/6 9" disc brake kit.  Front
                                        track with alternate front brakes:
                                        51.8".  Authorized frame modification
                                        information available from SCCA.  BMC
                                        Mark III transmission with 948cc
                                        engine.  Highlights and associated
                                        hardware may be removed.  Manifold
                                        unrestricted for two (2) SU
                                        carburetors.  Wood floorboards may be
                                        replaced by metal.  Rear edge of
                                        front fenders is to be 4.5" above the
                                        body undertray.

TB 98-07   Eff 7/1/98   FP           Classify Mazda GLC/323.
                                     -  Engine Type: 4 cyl SOHC
                                     -  Bore: 78.0mm
                                     -  Stoke: 83.6mm
                                     -  Displacement: 1597cc
                                     -  Head Material: Aluminum
                                     -  Block Material: Iron
                                     -  Valve Head Diameter: (I) 38.1mm
                                     -                       (E) 32.1mm
                                     -  Induction: Two (2) automotive type
                                        with 32mm venturis or original fuel
                                        injection
                                     -  Wheelbase: 94.5"
                                     -  Track: (F) 
                                               (R) 
                                     -  Wheels: 13" x 7", 14" x 7"
                                     -  Number of Forward Speeds: 4/5
                                     -  Brakes: (F) 238mm Disc
                                                (R) 200mm Drum
                                     -  Weight: 1800 lbs
                                     -  Notes:  Compression ratio limited to
                                        12.0:1.  Cylinder head preparation
                                        per Improved Touring specifications
                                        except that the cylinder head may be
                                        milled to achieve maximum compression
                                        ratio (i.e. no porting, stock valve
                                        job, no chamber modifications). 
                                        Valve Lift: .500" max.
                                     -  Restrictions:  Alternate transmission
                                        permitted, weight penalties included
                                        in TB 98-08.  Modified or relocated
                                        suspension pick-up (mounting) points,
                                        add 200 lbs.  (Refer to current ITCS
                                        Sections 12.1.4.D.5.c and d for
                                        allowable suspension modifications).


TB 98-02   Eff 2/1/98   GP p 52-53   Nissan / Datsun PL510.  Correct
                                     specifications as follows:
                                     -  Track: (F) 54.5"
                                               (R) 54.5"
                                     -  Wheels: 13" x 7"

TB 98-03   Eff 3/1/98   GP p 52-53   Nissan / Datsun PL510.  Correct
                                     carburetion as follows:  One (1) 40
                                     DCFN, One (1) 40 IDF, One (1) 32/36
                                     DGV, One (1) 32/36 DGAV, Two (2)
                                     automotive type side draft w/28mm
                                     venturis on I.R manifold.

TB 98-04   Eff 4/1/98   GP p 52-53   Triumph Spitfire Mk II.  Add to Notes: 
                                     Use of cylinder head casting P/N 303014
                                     is not permitted.  Cylinder head
                                     casting numbers must be maintained.

TB 98-02
TB 98-03   Eff 2/1/98   GP p 54-55   Volkswagen Rabbit (includes
                                     convertible) 1457/1471.  Correct
                                     specifications as follows:
                                     -  Weight: 1900 lbs

TB 98-073  Eff 72/1/98  GP p 54-55   Volkswagen Rabbit (includes
                                     convertible) 1457/1471.  Correct Weight
                                     to 1880 lbs.

TB 98-02
TB 98-03   Eff 2/1/98   GP p 54-55   Volkswagen Scirocco 1457/1471.  Correct
                                     specifications as follows:
                                     -  Number of Forward Speeds: 4 or 5
                                     -  Weight: 1900 lbs

TB 98-07   Eff 7/1/98   GP p 54-55   Volkswagen Scirocco 1457/1471.  Correct
                                     Weight to 1880 lbs.

TB 98-05   Eff 5/1/98   GP p 54-55   Volkswagen Scirocco 1457/1471.  Change
                                     the specifications as follows: Trans
                                     Speeds: 4 or 5.

TB 98-02   Eff 2/1/98   HP p 57      Austin Healey Sprite Mk I, II, III, IV. 
                                     Add to Notes: as follows:  Correct
                                     cylinder head P/N's are 2A629, 12A185,
                                     12G202.

TB 98-02   Eff 2/1/98   HP p 57      Honda Civic.  Change specifications as
                                     follows:
                                     -  Weight: 1710 lbs

TB 98-07   Eff 7/1/98   HP p 57      Honda Civic.  Increase Weight to 1830
                                     lbs.

TB 98-02   Eff 2/1/98   HP p 57      MG Midget Mk I, II, III, IV.  Add to
                                     Notes: as follows:  Correct cylinder
                                     head P/N's are 2A629, 12A185, 12G202.

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