Porsche 911 Carrera RS Type F/G group 4 (1973)
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Chassis numbers here and here and here and here
Porsche 915 transmission here and here

Specifications

1590 units built
Click here
Click here for Type G 3.0

Group/Class 4/4 Homologation number: 637 and 3053
Years active 1973 - 1975 Homologation start: 1/1/1973 and 1/7/1973
Engine
Type 911/83 (2687cc), H6cyl (180o), 4 stroke, petrol engine.
1974+: 911/77 (2993cc)
located longitudinally behind rear axle
Capacity 2687cc,
1974+: 2992.55cc
WRC: 2687 cc,
1974+: 2992.55cc
Bore x Stroke (mm) 90.0 x 70.4 mm,
1974+: 95 x 70.4mm
Compression ratio 10.0:1
Output power - torgue 210 - 230 HP / 6300 rpm 26 - 28 kgm (255 - 275 Nm) / 5100 rpm
Main bearings 8
Materials block: aluminium alloy or magnesium alloy cylinderhead: aluminium alloy
Cams/valves 2 x 1 overhead camshafts (SOHC), chain driven 2 valves/cyl. - 12 valves total. 46mm inlet valve diameter, 40mm exhaust valve diameter.
Aspiration natural, Bosch Kugelfisher multipoint mechanical fuel injection
Ignition electronic, firing order 1-6-2-4-3-5
Cooling system aircooled
Lubrication system dry sump with 1 oil cooler 11 lt
Transmission
Type rear wheel drive Porsche 915 (Tutorial 1, Tutorial 2), 5 speed manual gearbox
Gearbox ratios 1st: 3.182 (35/11)
2nd: 1.834 (33/18)
3rd: 1.126 (29/23)
4th: 0.926 (25/27)
5th: 0.724 (29/21)
R: 3.325/1 (21/12 x 38/20)
1st: 3.182 (35/11)
2nd: 2.187 (35/16)
3rd: 1.600 (32/20)
4th: 1.126 (29/23)
5th: 1.000 (26/26)
R: 3.325/1 (21/12 x 38/20)
1976+:
1st: 2.400 (36/15)
2nd: 1.684 (32/19)
3rd: 1.318 (29/22)
4th: 1.080 (27/25)
5th: 0.889 (24/27)
R: 3.325/1 (21/12 x 38/20)
Diffrential ratio 4.428/1 (31/7), 5.286/1 (37/7).
1976+: 3.875/1 (31/8), 4.375/1 (35/8)
spiral bevel gears limited slip rear differential
Clutch dry single disk 225mm diameter
Chassis-body
Type steel monocoque 911 Type F chassis. 2 door coupe steel bodyshell with steel bumpers and "ducktal" rear spoiler.
1974: Type G chassis with front "impact" bumpers and "ducktail" rear spoiler.
1975: Type H chassis with front "impact" bumpers and "flat" rear spoiler
Front suspension mc pherson strut with lower L wishbone, longitudinal torsion bars, telescopic gas shock absorber and anti-roll bar 17/19/21/28/35mm diameter
Rear suspension trailing arm with torsion bars, telescopic gas shock absorber and anti-roll bar 17/19/21/28/35mm diameter
Steering system rack and pinion
Brakes front ventilated disks 282mm diameter with 2 steel piston calipers. Rear ventilated disks 290mm diameter with 2 steel piston calipers. Ventilated calipers front and rear dual circuit with servo
Dimensions
length: 4.102 m (161.5") width: 1.652 m (65.0")
1.710m (67.3")
height: 1.320 m (52.0")
wheelbase: 2.271 m (89.3") front track: 1.372 m (54.0")
1.437m (55.6")
rear track: 1.404 m (55.3")
1.462m (57.6")
Rims - tires 6 - 7 - 8 x 15". 1974+: front 8x15", rear 9x15" 165 VR 15", 185/70 VR 15". 1974+: front 215/60 VR15", rear 235/60 VR15"
Weight 900 - 1000 kg
Weight/power 4.1 kg/HP
Fuel tank 62 -120 lt

Results in WSCC

Season
Group 4 classification is noted in brackets
Type F chassis with 911/83 engine
Car entry, chassis number Car number/ result
Dayt Vallel Dijon Monza Spa Targa Florio Nurb Le Man Zeltweg Watkins Glen
Team 24h 6h 1000km 1000km 1000km 1000km 24h 1000km 6h
Martini Racing Team/ Porsche Stuttgart #T, spare car
Anton Fischhaber #89, in entry list
Victor Blanc #91, in entry list
Comstock #110, 18th (7th)
Samson Kremer Team (Carrera) #57, in entry list
Boeri Racing #62, in entry list
Ecurie Escargot (911/83R) #43, 12th (5th)
Statistics
Works Starts/finishes 2/2 1/1 1/1
Comstock
Andrew Hedges 110
Dan Margulies 110
Boeri Racing
Ernst Kraus 62
Ecurie Escargot
Dave Helmick 43
John O'Steen 43

Results in WRC

Works team: Porsche System Engineering

Season

911/83 engine, Type F chassis
Entry Rally event
Driver
Codriver
Team M.C SVE POR KEN MAR GRE POL FIN A S.R USA RAC
Entry list
TdC
Américo Nunes
António Morais
VIP 5th
Giovanni Salvi
Barbosa Gama
VIP 10th
Silvio Perestrelo
Luigi Valle
punctures
Sobiesław Zasada
Marian Bień
gear box
Björn Waldegård
Hans Thorszelius
eng ine
Bill Fritschy
Kim Mandeville
gear box
Adam Smorawiński
Zbigniew Kołaczkowski
acci dent
Leo Kinnunen
Atso Aho
MCS / Racing Team AAW 3rd
Klaus Russling
Wolfgang Weiss
7th
Jack Tordoff
Phil Short
Ziebart Rustproofing dnf
Total points
()
19 7 8 4
Statistics
Others starts/finishes 9/4 3/2 3/0 1/0 1/1 1/1

rp7303.jpg Source
Rally Polland '73
1974_Porsche_911_Safari_web1200t.jpg Source
Björn Waldegard in Safari rally '74
kinnunen1973.jpg Source
Leo Kinnunen in 1000 Lakes rally '73
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Jacques Almeras with Type G 3.0 in Tour de Corse '77
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Type G Carrera RS 3.0 '74

Drawings

Porsche_911_Carrera_RS_cutaway_by_Shin_Yoshikawa.78212657_std.jpg Source
porsche_911_carrera_rs_1973.jpg Source
porsche-911-carrera-rs-30-1974.gif Source

Engine

porsche91127litreenginewit.jpg Source

Electric diagrams

1973+911+MFI+Wiring+diagram+Part+I+Small+1200782710.jpg Source
1973+911+MFI+Wiring+diagram+part+I+key+Small+1200782721.jpg Source
1973+911+MFI+Wiring+diagram+Part+II+Small+1200782732.jpg Source
1973+911+MFI+Wiring+diagram+part+II+key+Small+1200782741.jpg Source
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