Porsche 964 Carrera (Cup) group B (1990)
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Chassis numbers and information

Click here for info

Specifications

Carrera Cup '91: 270 units built

Click here and here for Carrera 2
Click here for RS 3.6 '90 street version

Homologation number: B294 (Carrera 4), B295 (Carrera 2)
Homologation start: 1/9/1990

Parts catalogue

Porsche M64/01, Boxer 6 (180o) cyl, 4 stroke, petrol engine, located rear longitudinally vertical
3600cc, 100 x 76.4 mm
11.3:1
(Street Version: 250 Hp)
260-265 HP (195 kW) @ 6100 rpm
229 Ft-Lbs (310 NM) @ 4800 RPM
aluminum alloy finned block and head, 6 finned cylinder heads, one per cylinder
forged steel crankshaft with 8 main bearings 60 mm diameter
small end bearigns diameter 23.02+0.013mm, width 25-0.5mm
big end bearings diameter 58+0.019mm, width 21.7+0.1mm
play between the bush & pin 0.020…0.039 max 0.055mm
2 x 1 or Single Overhead camshaft (SOHC), double chain drive, 2 valves/cyl - 12 valves total. 49.1 mm inlet valve diameter, 42.6 mm exhaust valve diameter. 25.5o angle between inlet valve axle and vertical, 30.25o angle between exhaust valve axle and vertical
aspiration, natural with Bosch Motronic M2.1electronic multipoint fuel injection
Firing order: 1-6-2-4-3-5, twin-spark
aircooled
dry sump

964 Carrera RS 1992
M64/03: 300 HP @ 6100 rpm
325 Nm (240 ft·lb) (33.1 kgm) @ 4800 rpm
street version
202 kW (275 PS) @ 6100 rpm
314 N⋅m (232 lbf⋅ft) @ 4800 rpm

Carrera 2
Getrag G50, 5 speed manual gearbox, 3.7 lt SAE75W/90 Gear Oil

G50/03
1st: 3.500/1 (42/12)
2nd: 2.059/1 (35/17)
3rd: 1.407/1 (38/27)
4th: 1.086/1 (38/35) or C2 1.125/1 (36/32)
5th: 0.868/1 (33/38) or C2 0.891/1 (33/37)
R: 2.875/1 (40/14)

Carrera 4
G50/00
1st: 3.500/1 (42/12)
2nd: 2.118/1 (36/17)
3rd: 1.444/1 (39/27)
4th: 1.086/1 (38/35)
5th: 0.868/1 (33/38)
R: 2.875/1 (40/14)

1st: 3.153/1 (41/13)
2nd: 1.894/1 (36/19)
3rd: 1.333/1 (36/27)
4th: 1.028/1 (36/35)
5th: 0.756/1 (31/41)
final drive ratio 3.444/1 (31/9), 4.000/1 (32/8), 4.625/1 (37/8), Carrera 2: 3.333/1 (30/9), 40% or variable from 20% to 100% limited slip rear differential
2 doors coupe bodyshell with composite body panels for the sills and bumpers, and aluminium engine cover, doors and latched front lid
Front Suspension: Modified MacPherson Struts (lowered -40mm)
Rear Suspension: semi trailing arms with coil springs, telescopic shock absorbers, anti roll bar
power assisted rack and pinion, 18.48/1 ratio
Length: 4250mm (167.3")
Width: 1652mm (65.0")
Height: 1270mm (50.0")
Wheelbase: 2272mm (89.4")
track front: 1379mm (54.3")
track rear: 1374mm (54.1")
wheels front/rear, 6J x 16" / 8J x 16"
tires front/rear, 205/55 ZR16" - 255/50 ZR 16"
1120kg
fuel tank, 77 lt
drag coefficient, 0.32
frontal area, 2.18 m2

Results in BPR International GT Endurance Series

Season
Car entry Car number, result
Paul Ricard Jarama Dijon Paris Valle lunga Spa Suzuka Zhuhai
Team 4h 4h 4h 1000km 4h 4h 1000km 3h
Porsche Center Hong Kong (Carrera 2 group GT4) #1, 15th
Quattro Racing (Carrera 4 Cup group GT3) #04, dnf
Quattro Racing (Carrera 4 Cup group GT2) #4, 18th
Porsche Club Italia (Carrera 2 group GT4) #21, 7th #21, in entry list
Alain Ianetta/ Manuel Monteiro/ Jean-Claude Fabre (Carrera 2) #23, 14th #23, in entry list
V de V Racing Team (Carrera 2 group GT3) #37, dnf #37, drive shaft
Crisal Compétition (RS 3.6 Cup group GT3) #46, 12th #46, 9th #46, 15th #46, 8th #46, 18th
Crisal Compétition (Carrera 2 group GT4) #46, 11th
Crisal Compétition (RS 3.6 Cup group GT3) #47, in entry list #47, 13th #47, 16th #47, in entry list #52, in entry list
Guy Broissiat /Philippe Meunier (group GT3) #52, 11th
Gilles Vannelet/ Jean-François Metz/ Marc Pachot #93, in entry list
Syuuroku Sasaki/ Kumi Satou (group GT3) #9, in entry list
Total points
9		 2 7
Statistics
Works Starts/finishes 16/13 2/1 2/2 2/1 5/4 2/2 1/1 2/2

Team and drivers entries

+ Show Quattro Racing Team
+ Show Porsche Club Italia Team
+ Show V de V Racing Team (37)
+ Show Crisal Compétition Team (46, 47)
+ Show Porsche Center Hong Kong Team (1)

Results in Endurance races

Classification in group GT2 is noted in brackets
Carrera 2 3600
Car entry, chassis number Car number, result
Daytona Sebring Le Mans
Date 31/1 20/3 20/6
Duration 24h 12h 24h
Team\ Championship IMSA IMSA
Rohr Engineering, 580 (Carrera 2 Cup) #01, eng ine #01, 19th
Porsche Club Hildesheim (Carrera 2) #27, 13th
Cigarette Racing (Carrera 2) #28, 11th #28, 17th
Bernt Motorsport (Carrera 2) #41, 14th #41, elec trics
Champion Porsche (Carrera 2) #48, 16th #48, 21st
Obermaier Racing GmbH (Carrera 2 Cup 3.8) #40, 22nd
Obermaier Racing GmbH (Carrera 2 Cup) #41, acci dent in practice
Team Paduwa (Carrera 2 Cup) #48, over heating
Team Paduwa (Carrera 2 Cup) #49, 26th
Fa Derknum GmbH (Carrera 2) #67, in entry list
Cartronic Motorsport, 9006 (Carrera 2 Cup) #76, acci dent
Statistics
Works Starts/finishes 14/9 5/4 4/3 5/2

Team and drivers entries

+ Show Rohr Engineering Team
+ Show Porsche Club Hildesheim Team
+ Show Cigarette Racing Team
+ Show Bernt Motorsport Team
+ Show Champion Porsche Team
+ Show Obermaier Racing GmbH Team
+ Show Team Paduwa
+ Show Fa Derknum GmbH Team
+ Show Cartronic Motorsport Team

Drawings

Rear suspension

Rear+Suspension+9641209396610.jpg Source
Control+Mount+Medium+1209396098.jpg Source

Xtrac LSD differential

xtracprint1.png Source
page revision: 154, last edited: 21 Sep 2021 21:39
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