Porsche 911 RSR Type G group 4 (1974)
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Chassis numbers here and here and here and here
Click here for history/photoes
Porsche 915 transmission here and here
RSR = Rennsport Racing (Race Sport Racing)

Specifications

109 units built (54 RSR, 55 RS 3.0)
Click here for fuel injection manual
Click here for parts list
Click here
Click here and here for RSR 3.0

Homologation number: 637
Homologation start: 1/1/1973

Type Porsche Type 911/75, boxer 6 cyl (180o), 4 stroke, petrol engine located longitudinally behind rear axle
Capacity 2996cc
Bore x Stroke (mm) 95.0 x 70.4 mm
Compression ratio 10.5:1
Output power - torgue 330 bhp / 246 KW @ 8000 rpm 314 Nm / 232 ft lbs @ 6500 rpm
Main bearings forged steel crankshaft with 8 plain main bearings 57mm diameter, 52mm big end journal diameter titanium connecting rods, 127.8mm distance center to center, 56mm big end bearing diameter
Materials block: magnesium alloy, 124.5mm bore spacing, Nikasil cylinder lining cylinderhead: aluminium alloy
Cams/valves 2 x 1 overhead camshafts (SOHC), chain driven 2 valves/cyl. - 12 valves total. 49mm inlet valve diameter, 41.5mm exhaust valve diameter.
Aspiration natural with Bosch "pulsed injection" D-Jetronic mechanical Fuel Injection system using Kugelfischer PL Injection pump. Click here and here
Ignition electronic, twin spark, 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 gearbox
Gearbox ratios 1st: 3.182/1 (35/11)
2nd: 1.778/1 (32/18)
3rd: 1.125/1 (27/24)
4th: 0.821/1 (23/28)
R: 3.325/1
1st: 3.182/1 (35/11)
2nd: 1.834/1 (33/18)
3rd: 1.261/1 (29/23)
4th: 0.962/1 (25/26)
5th: 0.759/1 (22/29)
R: 3.325/1
Diffrential ratio 4.428/1 (31/7), 3.857/1 (27/7), 5.286/1 (37/7) spiral bevel gears limited slip rear differential
Clutch dry single disk 225mm diameter
Chassis-body
Type steel monocoque 911 Type G (1974) and H (1975) series chassis. 2 door coupe steel bodyshell with steel bumpers
Front suspension mc pherson strut with lower L wishbone, coil springs, Bilstein telescopic gas shock absorber and anti-roll bar 15mm diameter
Rear suspension trailing arm with torsion bars, Bilstein telescopic gas shock absorber and anti-roll bar 15mm diameter
Steering system rack and pinion
Brakes ventilated disks all around. Ventilated calipers front and rear dual circuit with servo
Dimensions
length: 4,350 mm (171.3 in) width: 1,896 mm (74.6 in) height: 1,300 mm (51,2 in)
wheelbase: 2,272 mm (89.4 in) front track: 1,402 mm (55.2 in) rear track: 1,422 mm (56 in)
Rims - tires 9 x 15" / 11 x 15" 230/600 - 15" / 260/600 - 15"
Weight 900 kg, f/r distribution 43% / 57%
Fuel tank 110 lt

Results in WSCC

Season
Group 4 classification is noted in brackets
Car entry, chassis number Car number/ result
Monza Spa Nurb Imola Le Man Zeltweg Watkins Glen Le Castellet Brands Hatch Kyalami
Team 1000km 1000km 1000km 1000km 24h 1000km 6h 1000km 1000km 6h
Gelo Racing, 911 460 9065 #86, 12th (3rd) #53, 4th (1st) #45, 12th (2nd) #148, acci dent #35, 11th (3rd) #58, 9th (2nd) #55, 11th (1st) #20, 6th (2nd)
Gelo Racing, 911 460 9040 #87, 9th (1st) #54, 11th (8th) #44, acci dent #149, eng ine #53, acci dent
Gelo Racing, 911 460 9077 #150, in entry list #64, igni tion #34, 12th (4th) #57, 8th (1st) #54, 13th (2nd) #21, 7th (3rd)
Gelo Racing, 911 360 0847 #72, eng ine
Bonomelli Squadra Corse, 911 360 1159 #88, 13th (4th) #64, 20th (7th) #143, stee ring #41, in entry list
Porsche Club Romand, 911 460 9052 #89, dnt qualify #45, 9th (5th) #48, 22nd (9th) #141, eng ine #66, 7th (3rd) #37, 17th (8th) #45, valve #59, 16th (4th)
Porsche Club Romand, 911 460 9058 #91, dnt qualify #44, 7th (4th) #47, 14th (4th) #142, eng ine #58, valves * * #36, 16th (7th) #44, wheel bearing
Sepp Greger, 911 460 9078 #92, 19th (7th) #46, dnf #50, 24th (11th)
Brescia Corse #93, dnt qualify #146, in entry list
Joly Club, 911 460 9074 #94, 18th (6th) #59, dnf #144, 6th (2nd) #31, 18th (9th) #51, 12th (5th) #58, in entry list
Kremer Racing, 911 460 9038 #95, 11th (2nd) #41, 6th (3rd) #43, 16th (5th) #152, 5th (1st) #68, eng ine #32, 10th (2nd) #48, in entry list #51, 15th (3rd)
Kremer Racing, 911 460 9091 #96, 14th (5th) #40, 5th (2nd) #42, 21st (8th) #153, gear box #49, in entry list #52, eng ine
Kremer Racing, 911 460 9110 #42, in entry list #49, in entry list #52, 10th (3rd)
Kremer Racing, 911 460 9067 #51, 23rd (10th) #41, 13th (5th) #47, 14th (6th)
Kremer Racing, 911 460 9063 #33, 9th (1st)
STP Schweden #43, in entry list #46, 18th (6th)
Max Moritz, 911 460 9073 #47, in entry list #53, 28th
Max Moritz, 911 460 9060 #56, dnf
Robert Buchet, 911 460 9070 #41, 13th (3rd) #61, drive shaft #38, eng ine #40, oil leak
Robert Buchet, 911 460 9051 #54, 15th (7th)
Anton Fischhaber/ Dieter Schmid #52, dnf
Team Västkuststugan - Porsche Kubero, 911 360 1045 #54, dnf #56, 11th (4th)
Team Västkuststugan - Porsche Kubero #55, dnf
Hasselbecker-Racing-Team, 911 460 9063 #57, 27th
Wolfgang Kauwertz/ Klaus Drees, 911 460 9061 #58, 26th
Sixtant Racing-Team #60, 29th
Gante-Racing #61, 30th
Bob Wollek/ Jean-Marc Seguin #151, 7th (3rd)
Pierre Mauroy/ Anny-Charlotte Verney/ Martine Rénier, 911 460 9031 #59, 13th (7th)
Louis Meznarie #60, acci dent #59, 16th (8th)
Ecurie Francorchamps, 911 460 9072 #62, clutch #56, gear box
Jean-Claude Lagniez/ Gérard Méo, 911 360 1196 #63, 14th (8th)
Claude Haldi, 911 460 9029 #69, 12th (6th)
ASA Cachia - Bondy, 911 460 9059 #70, 10th (4th) #50, dnf
Toad Hall Motor Racing, 911 460 9049 #73, 20th #5, 10th (8th)
Toad Hall Motor Racing #6, in entry list
Scuderia Basilea, 911 460 9069 #30, in entry list
Hanno Maurer-Stroh/ Werner Ausserhofer, 911 460 9064 #39, dnf
Palladio #42, dnt qualify
Applejack Racing, 911 460 0037 #4, in entry list
Ted Trudon Porsche - Audi, Inc #34, 8th (6th)
International Performance Center, Inc #43, 13th (11th)
Brumos Porsche-Audi Corp, 911 460 9054 #59, 3rd (1st)
Peter Papke/ John Thomas/ Jim Cook #72, in entry list
Heimrath Turbo, Inc, 911 460 9080 #74, 4th (2nd)
Far West Racing, 911 460 9083 #81, in entry list
Jacques Bienvenue/ Marc Dancose, 911 460 0025 #88, 6th (4th)
Bob Hagestad/ Skip Barber, 911 460 9057 #95, rear suspe nsion
Almeras Freres, 911 460 9087 #43, in entry list
Porsche Cars Great Britain, 072 #57, eng ine in practice
Holbert's Porsche-Audi, 911 460 9056 #14, in entry list
Total points
86
2 22 15 5 3 24 6 9
Statistics
Works Starts/finishes 101/65 10/7 7/6 21/15 10/3 13/6 11/8 7/6 12/8 8/4 2/2
Driver Team entries and car number
Gelo Racing
Jürgen Neuhaus 86, 87 54 150
Franz Pesch 86 54 72 34
John Fitzpatrick 87 53 44, 45 148, 149 47 53, 54, 55 20
Georg Loos 87 44 148 64 35 21
Jürgen Barth 87 53, 54 45 149 72 34 58
Vic Elford 149, 150 61
Tim Schenken 35 57 20, 21
Rolf Stommelen 57 20, 21
Arturo Merzario 54
Manfred Schurti 54, 55
Toine Hezemans 53, 55
Bonomelli Squadra Corse
Ennio Bonomelli 88 64 143 6 41
Michael Keyser 88
Giuseppe Schenetti 88 41
Charles Geeraerts 64
Porsche Club Romand
Bernard Cheneviere 89 45 48 66 37 45 59
Peter Zbinden 89 45 48 142 66 30, 37 45
Mario Ilotte 91 141
Claude Haldi 91 44 47 141 58 36 44
Juan Fernandez 91 36
Claude Ballot-Léna 91 44 41 143 61 38 40
Niki Bosch 47 141
José-Maria Fernandez 58
Jean-Marc Seguin 58
Michel Dubois 66
William Vollery 67 46
Eric Chapuis 67 46
Roger Dorchy 67
Edy Brandenberger 30, 37 44
John De Stefano 59
Sepp Greger
Sepp Greger 92 50
Eberhard Sindel 92 50
Jean-Louis Haxhe 46
Helmuth Koinigg 46
Brescia Corse
"Tambauto" 93
"Gianfranco" 93
Alessandro Ghidini 146
"Pooky" 146
Jolly Club
Giovanni Borri 94 59 144 31 51 58
Giorgio Schön 94 59 144 31 51 58
Kremer Racing
Paul Keller 95 41 42, 43 152 68 32, 33 48 51
Hans Heyer 95 41 152 68 32, 33 48, 52 51, 52
Willy Kauhsen 96 40 43
Clemens Schickentanz 96 40 42 153 64 34 58 53
Willi Deutsch 42 49 153 52
Josef Brambring 42 49
Hartwig Bertrams 51 41 47, 49
Günter Steckkönig 51 49
Erwin Kremer 68 33
Reine Wisell 32
STP Schweden
Helmut Kelleners 43 46
Anton Stocks 43 46
Max Moritz
Werner Christmann 47 53
Eckhard Schimpf 47 53
Reinhardt Stenzel 56
Ove Andersson 56
Robert Buchet
Bob Wollek 41 151 38 40 52
Cyril Grandet 54
Guy Gentis 54
Team Västkuststugan - Porsche Kubero
Bengt Ekberg 54, 55 41 56
Roland Larsson 54, 55
Kurt Simonsen 55 56
Hasselbecker-Racing-Team
Horst Sasse 57
Jürgen Konrad 57
Sixtant Racing-Team
Horst Godel 60
Dieter Franke 60
Gante-Racing
John Rulon-Miller 61
Frank Lampe 61
Louis Meznarie
Hubert Striebig 60 59
Hughes Kirschoffer 60
Jean-Louis Chateau 60 59
Heinz Schiller
Jean Selz 61
Florian Vetsch 61
Ecurie Francorchamps
Richard Bond 62 56
Hughes de Fierlant 62
Nick Faure 56
"Jean Beurlys" 56
Claude Haldi
Lucien Nageotte 69
Pierre Laffeach 69
Jean-Francois Jaunet 69
ASA Cachia - Bondy
Raymond Touroul 70
Henri Cachia 70
Denis Rua 70 50
Jacques Borras 50
Toad Hall Motor Racing
Michael Keyser 73 5, 6
Milt Minter 73 5, 6
Paul Blancpain 73
Vic Elford 6
Ennio Bonomelli 6
Stephen Behr 6
Palladio
Girolamo Capra 42
Silvano Frisori 42
Applejack Racing
Bill Webbe 4
Freddy Kottulinsky 4
Holbert's Porsche-Audi
Al Holbert 14
Elliot Forbes-Robinson 14
Ted Trudon Porsche - Audi, Inc
Sam Posey 34
David Hobbs 34
International Performance Center, Inc
John O'Steen 43
John Graves 43
Dave Helmick 43
Brumos Porsche-Audi Corp
Peter Gregg 59
Hurley Haywood 59
Heimrath Turbo, Inc
Ludwig Heimrath 74
Jim Cook 74
Far West Racing
Elliot Forbes-Robinson 81
Grey Egerton 81
Almeras Freres
Jean-Marie Alméras 43
Jacques Alméras 43
Porsche Cars Great Britain
Win Percy 57
Nick Faure 57

*Max Moritz entry
* *Escuderia Montjuich entry


Porsche_911_RSR_3,01_1974.jpg Source
1975-911-rsr-30-kremer-k1-011.jpg Source
Porsche-911-Carrera-RSR-3.0.jpg Source
1974-911-Carrera-RSR-rear.jpg Source

Drawings

Electric diagrams

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