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G Prod to H Prod Mazda- VW

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Bob Dowie View Drop Down
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Joined: April.15.2004
Location: United States
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    Posted: November.11.2007 at 6:25pm

As mentioned in the Runoff tent meeting the alternate classifications for the G Prod cars would be listed here when finalized.  I'd like to thank the Production Ad Hoc group for their efforts on this.  We'll try to answer questions on this forum as time permits.  I can't seem to add an attachment so I'll add them in a couple of posts.

Thanks, Bob Dowie

 

 

1.      Classify the Mazda GLC (FWD).

Add new spec line to PCS, p. 428-429, Mazda GLC (FWD), Weight(lbs): 2075, Engine Type: 4 Cyl SOHC, Bore x Stroke(mm): 77.0 x 80.0, Displ.(cc): 1490, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)36.0 (E)31.0, Carb. No. & Type: (1) 40 DCN, DCNF, IDF w/ 32mm choke(s), (1) 32/36 DGV / DGAV, Wheelbase(in): 93.1, Track (F/R)(in): 58.2 / 58.4, Wheels(max): 13 x 7, Trans. Speeds: 5, Brakes Std.(in): (F)8.9 Disc (R)7.1 x 1.2 Drum, Notes: Orientation of the alternate carburetor is unrestricted.

2.      Classify the MGB & MGB-GT as a limited prep.

Add new spec line to PCS, p. 428-429, MGB & MGB-GT, Weight(lbs): 2100 *2153 **2205, Engine Type: 4 Cyl OHV, Bore x Stroke(in): 3.16 x 3.50, Displ.(cc): 1798, Block Mat’l: Iron, Head Mat’l: Iron, Valves IN & EX(in): (I)1.63 (E)1.35, Carb. No. & Type: (2) 1.50: SU, Wheelbase(in): 91.0, Track (F/R)(in): 53.0 / 53.2, Wheels(max): 15 x 7, Trans. Speeds: 4, Brakes Std.(mm): (F)273 Disc (R)254 Drum, Notes: Comp. Ratio limited to 11.0:1, Valve lift limited to .450”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Balance tube may be partially or fully blocked. Manifold may not be otherwise altered. Valve lift measured at valve with zero lash or clearance. Stock rocker arms, cam follow­ers, rocker ratios, and rocker/follower ratios must be retained. Roller rockers and roller followers are prohibited. Stock connecting rods req’d, but may be lightened and balanced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft required, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission.

3.      Classify the Mini Cooper (02-05) as a limited prep.

Add new spec line to PCS, p. 428-429, Mini Cooper S (02-05), Weight(lbs): 2080 *2132 **2184, Engine Type: 4 Cyl SOHC, Bore x Stroke(mm): 77.0 x 85.8, Displ.(cc): 1598, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)30.3 (E)23.3, Carb. No. & Type: Original-type fuel injection w/ stock unmodified F.I. throttle body, Wheelbase(in): 97.1, Track (F/R)(in): 61.6 / 61.9, Wheels(max): 15 x 7, Trans. Speeds: 5, Brakes Std.(mm): (F)276 Vented Disc (R)239 Solid Disc, Notes: Comp. Ratio limited to 10.6:1, Valve lift limited to .450”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Manifold may not be otherwise altered. Valve lift measured at valve with zero lash or clearance. Stock rocker arms, cam followers, rocker ratios, and rocker/follower ratios must be retained. Stock connecting rods req’d, but may be lightened and balanced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft required, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission.

4.      Classify the Nissan/Datsun 210 1.4.

Add new spec line to PCS, p. 428-429, Nissan/Datsun 210 1.4, Weight(lbs: 2050, Engine Type: 4 Cyl OHV, Bore x Stroke(mm): 76.0 x 77.0, Displ.(cc): 1397, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)37.0 (E)30.0, Carb. No. & Type: (1) 40 DCN, DCNF, IDF w/ 30mm choke(s), (1) 32/36 DGV/DGAV, (2) auto type side draft w/ 30mm choke(s) on I.R. manifold, Wheelbase(in): 92.1, Track (F/R)(in): 56.0 x 54.7, Wheels(max): 13 x 6, Trans. Speeds: 4 or 5, Brakes Std.(in): (F)9.65 Disc (R)8.00 x 1.38 Drum, Brakes Alt(mm): (F)254 Vented Disc (R)270 Solid Disc, Discs and Calipers from 80-83 200SX, Notes: Alternate differential assembly: H165.

5.      Classify the Nissan/Datsun B-210 1.4.

Add new spec line to PCS, p. 428-429, Nissan/Datsun B-210 1.4, Weight(lbs: 2050, Engine Type: 4 Cyl OHV, Bore x Stroke(mm): 76.0 x 77.0, Displ.(cc): 1397, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)37.0 (E)30.0, Carb. No. & Type: (1) 40 DCN, DCNF, IDF w/ 30mm choke(s), (1) 32/36 DGV/DGAV, (2) auto type side draft w/ 30mm choke(s) on I.R. manifold, Wheelbase(in): 92.1, Track (F/R)(in): 52.7 x 51.5, Wheels(max): 13 x 6, Trans. Speeds: 4 or 5, Brakes Std.(in): (F)9.65 Disc (R)8.00 x 1.38 Drum, Notes: Alternate differential assembly: H165.

6.      Classify the Porsche 914-4 (1.8L) as a limited prep.

Add new spec line to PCS, p. 430-431, Porsche 914-4 (1.8L), Weight(lbs): 2150 *2204 **2258, Engine Type: 4 Cyl OHV, Bore x Stroke(mm): 93.0 x 66.0, Displ.(cc): 1795, Block Mat’l: Alum, Head Mat’l: Alum, Valves IN & EX(mm): (I)40.9 (E)34.0, Carb. No. & Type: Original-type fuel injection only, Wheelbase(in): 96.5, Track (F/R)(in): 56.5 / 58.1, Wheels(max): 15 x 7, Trans. Speeds: 5, Brakes Std.(mm): (F)280 Disc (R)282 Disc, Notes: Comp. Ratio limited to 10.5:1, Valve lift limited to .420”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Manifold may not be otherwise altered. Stock (unmodified) fuel injection throttle bodies req’d. Valve lift measured at valve with zero lash or clearance. Stock rocker arms, cam followers, rocker ratios, and rocker/follower ratios must be retained. Roller rockers and roller followers are prohibited. Stock con­necting rods req’d, but may be lightened and balanced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft req’d, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission. Cylinder barrels of alternate material are permitted.

7.      Triumph Spitfire 1500, p. 432-433, change the specs to read as follows: Weight(lbs): 1665 *1707 **1748.

8.      Volkswagen Rabbit 1588 (includes Cabriolet/Convertible), p. 432-433, change the specs to read as follows: Track (F/R)(in): 58.9 / 57.2.

9.      Classify the Volkswagen Rabbit 1715 (81-84) as a limited prep.

Add new spec line to PCS, p. 432-433, Volkswagen Rabbit 1715 (81-84) (excl. conv.), Weight(lbs): 1990 *2040 **2090, Engine Type: 4 Cyl SOHC, Bore x Stroke(mm): 79.5 x 86.4, Displ.(cc): 1715, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)34.0 (E)31.0, Carb. No. & Type: Original CIS-type fuel injection only w/ stock unmodified throttle body, Wheelbase(mm): 2401, Track (F/R)(in): 58.9 / 57.2, Wheels(max): 14 x 7, Trans. Speeds: 5, Brakes Std.(mm): (F)239 Disc (R)180 Drum, Notes: Comp. Ratio limited to 11.0:1, Valve lift limited to .450”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Manifold may not be otherwise altered. Valve lift measured at valve with zero lash or clearance. Stock connecting rods req’d, but may be lightened and balanced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft req’d, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission.

10.  Classify the Volkswagen Rabbit GTI 1780 (83-84) as a limited prep.

Add new spec line to PCS, p. 432-433, Volkswagen Rabbit GTI 1780 (8-valve) (83-84), Weight(lbs): 2065 *2117 **2168, Engine Type: 4 Cyl SOHC, Bore x Stroke(mm): 81.0 x 86.4, Displ.(cc): 1780, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)40.0 (E)33.0, Carb. No. & Type: Original CIS-type fuel injection only w/ stock unmodified throttle body, Wheelbase(mm): 2401, Track (F/R)(in): 58.9 / 57.2, Wheels(max): 15 x 7, Trans. Speeds: 5, Brakes Std.(mm): (F)239 Disc (R)180 Drum, Notes: Comp.Ratio limited to 12.0:1, Valve lift limited to .420”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Manifold may not be otherwise altered. Valve lift measured at valve with zero lash or clearance. Stock connecting rods req’d, but may be lightened and balanced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft req’d, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission.

11.  Classify the Volkswagen Scirocco 1457/1471 as a limited prep.

Add new spec line to PCS p. 432-433, Volkswagen Scirocco 1457/1471, Weight(lbs): 1650 *1691 **1733, Engine Type: 4 Cyl SOHC, Bore x Stroke(mm): 76.5 x 80.0, 79.5 x 73.4, Displ.(cc): 1471, 1457, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)34.0 (E)31.0, Carb. No. & Type: (1) 40 DCN, DCNF, IDF w/ 32mm choke(s), (1) 32/36 DGV/DGAV, or original CIS-type fuel injection, Wheelbase(in): 94.5, Track (F/R)(in): 58.9 / 57.2, Wheels(max): 13 x 7, Trans. Speeds: 4 or 5, Brakes Std.(in): (F)9.41 Disc (R)7.1 x 1.19 Drum, Notes: Comp. Ratio limited to 11.0:1, Valve lift limited to .450”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Manifold may not be otherwise altered. Valve lift measured at valve with zero lash or clearance. Stock rocker arms, cam followers, rocker ratios, and rocker/follower ratios must be retained. Roller rockers and roller followers are prohibited. Stock connecting rods req’d, but may be lightened and bal­anced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft req’d, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission.

12.  Volkswagen Scirocco 1588, p. 432-433, change the specs to read as follows: Track (F/R)(in): 58.9 / 57.2.

13.  Classify the Volkswagen Scirocco 1715 (81-84) as a limited prep.

Add new spec line to PCS, p. 432-433, Volkswagen Scirocco 1715 (81-84), Weight(lbs): 1990 *2040 **2090, Engine Type: 4 Cyl SOHC, Bore x Stroke(mm): 79.5 x 86.4, Displ.(cc): 1715, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)34.0 (E)31.0, Carb. No. & Type: Original CIS-type fuel injection only w/ stock unmodified throttle body, Wheelbase(mm): 2401, Track (F/R)(in): 58.9 / 57.2, Wheels(max): 14 x 7, Trans. Speeds: 5, Brakes Std.(mm): (F)239 Disc (R)180 Drum, Notes: Comp. Ratio limited to 11.0:1, Valve lift limited to .450”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Manifold may not be otherwise altered. Valve lift measured at valve with zero lash or clearance. Stock connecting rods req’d, but may be lightened and balanced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft req’d, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission.

14.  Classify the Volkswagen Scirocco 1780 (83-88) as a limited prep.

Add new spec line to PCS, p. 432-433, Volkswagen Scirocco 1780 (8-valve) (83-88), Weight(lbs): 2065 *2117 **2168, Engine Type: 4 Cyl SOHC, Bore x Stroke(mm): 81.0 x 86.4, Displ.(cc): 1780, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)40.0 (E)33.0, Carb. No. & Type: Original CIS-type fuel injection only w/ stock unmodified throttle body, Wheelbase(mm): 2401, Track (F/R)(in): 58.9 / 57.2, Wheels(max): 14 x 7, Trans. Speeds: 5, Brakes Std.(mm): (F)239 Disc (R)180 Drum, Notes: Comp. Ratio limited to 12.0:1, Valve lift limited to .420”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Manifold may not be otherwise altered. Valve lift measured at valve with zero lash or clearance. Stock connecting rods req’d, but may be lightened and balanced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft req’d, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission.

15.  Classify the Volkswagen Jetta 1780 (85-91) as a limited prep.

Add new spec line to PCS, p. 432-433, Volkswagen Jetta 1780 (85-91), Weight(lbs): 2065 *2117 **2168, Engine Type: 4 Cyl SOHC, Bore x Stroke(mm): 81.0 x 86.4, Displ.(cc): 1780, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)40.0 (E)33.0, Carb. No. & Type: Original CIS or Digifant-type fuel injection only w/ stock unmodified throttle body, Wheelbase(in): 97.3, Track (F/R)(in): 58.9 / 58.2, Wheels(max): 15 x 7, Trans. Speeds: 5, Brakes Std.(mm): (F)244 Disc (R)244 Drum, Notes: Comp. Ratio limited to 11.5:1, Valve lift limited to .420”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Manifold may not be otherwise altered. Valve lift measured at valve with zero lash or clearance. Stock connecting rods req’d, but may be lightened and balanced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft req’d, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission.

16.  Classify the Volkswagen Golf (GTI, GT, GL) as a limited prep.

Add new spec line to PCS, p. 432-433, Volkswagen Golf (GTI, GT, GL), Weight(lbs): 2065 *2117 **2168, Engine Type: 4 Cyl SOHC, Bore x Stroke(mm): 81.0 x 86.4, Displ.(cc): 1780, Block Mat’l: Iron, Head Mat’l: Alum, Valves IN & EX(mm): (I)40.0 (E)33.0, Carb. No. & Type: Original CIS or Digifant-type fuel injection only w/ stock unmodified throttle body, Wheelbase(in): 97.3, Track (F/R)(in): 58.9 / 58.2, Wheels(max): 15 x 7, Trans. Speeds: 5, Brakes Std.(mm): (F)239 Disc (R)180 Drum, Notes: Comp.Ratio limited to 11.5:1, Valve lift limited to .420”, Restricted Suspension. Limited Prep cyl head. Stock intake manifold only-may be port matched on port mating surface to a depth of no more than 1”. Manifold may not be otherwise altered. Valve lift measured at valve with zero lash or clearance. Stock connecting rods req’d, but may be lightened and balanced, a bushing may be added to the small end however the original center to center dimension shall remain unchanged. Rod bolts may be replaced. Stock crankshaft req’d, but may be lightened and balanced, with a max. undersize of 0.045”. Billet cranks prohibited. Dry sump is prohibited. Competitor must be in possession of factory workshop manual at all competitions. Limited Prep Transmission.



Edited by Bob Dowie
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