Porsche 911 GT3 R 2012 User manual

Technical Manual
Model 2012

Preface
This technical information will give you the possibility to reference data,
adjustment values and working procedures and make the maintenance
and repair work on the vehicle easier.
We wish you every success with your GT3 R
Dr. Ing. h.c. F. Porsche
Aktiengesellschaft
Vertrieb Sonder- und Rennfahrzeuge

Race car 911 GT3 R Model 2012
This car is specifically designed for participation in racing competitions.
For obvious reasons, measurements referring to bodywork dimensions
of the production cars cannot be used as reference.
Porsche accepts no guarantee that the vehicle conforms to the
regulations.
The car can not be registered for road use and does not comply with
German road traffic regulations.
Illustrations, descriptions and schematic drawings serve exclusively as
presentation for the text. Porsche Motorsport accepts no liability for the
completeness and conformity of the contents of this brochure with
respect to the legality of the current regulations.

1
Contents
1. CONTACTS 4
2. GENERAL TECHNICAL DATA 5
2.1. Dimensions 5
2.2. Weight 5
3. ENGINE 6
3.1. Engine technical data 6
3.2. Fuel specs 6
3.3. Engine power and torque curves 7
3.4. Engine lubrication 8
3.5. Engine cooling system 12
3.6. Induction system 19
3.7. Throttle butterfly 20
3.8. Working on the engine 21
3.9. Engine component tightening torques 34
3.10. Engine mileage 35
4. FUEL AND EXHAUST SYSTEM 36
4.1. Fuel system 36
4.2. Fuel cell 37
4.3. Exhaust system 41
5. GEARBOX 44
5.1. Gearbox technical data 44
5.2. Gear ratio diagram 45
5.3. Connection scheme gearbox heat exchanger 45
5.4. Paddle Shift MEGA-Line 46
5.5. Gear position recognition 51
5.6. Differential 52

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5.7. Clutch 53
5.8. Working on the gearbox 57
5.9. Gearbox component tightening torques 63
6. SUSPENSION 64
6.1. Front suspension 64
6.2. Rear suspension 70
6.3. Basic wheel alignment 74
6.4. Working on the suspension 86
6.5. Tightening torques suspension 87
6.6. Sachs damper service information 98
7. WHEELS 100
7.1. Wheel nuts 100
8. BRAKE SYSTEM 102
8.1. Technical data brake system 102
8.2. Brake force distribution (brake balance) 102
8.3. Brake caliper 109
8.4. Tightening torques brake system 109
8.5. Brake disc screwing 110
9. CHASSIS 111
9.1. Interior 111
9.2. Exterior 112
9.3. Rear wing 113
9.4. Fire extinguisher system 114
9.5. Air-jack system 116
10. ELECTRIC 118
10.1. Alternator 118
10.2. Battery 118

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10.3. Steering wheel 118
10.4. Centre console 120
10.5. Shift Light Module 121
10.6. MoTeC Dash 122
10.7. Car sensors 127
10.8. Engine Control Unit (ECU) 128
10.9. EGas 129
10.10. ABS 133
10.11. Traction control 139
10.12. Relay- and fuse assignment 144
11. CAR MAINTENANCE 148
11.1. After approx. 200 km and/or first test 148
11.2. After every session 148
11.3. After every race weekend (sprint) 149
11.4. After 3 - 4 race weekends (sprint) 149
11.5. After 30 hours running time 149

4
1. Contacts
Technical Support Mr. Marcus Stolzenthaler 0711 911 82498
0170 911 2996
Mr Rainer Sauter 0711 911 84994
0170 911 3436
Mr Steffen Höllwarth 0711 911 89922
0170 911 3989
Fax: [phone]
Sport parts sales Mr Friedrich Weseler 0711 911 89854
Mr Karlheinz Kienle 0711 911 82923
Mr Klaus Lenzner 0711 911 82423
Mr Christian Müller 0711 911 89175
Mr Salvatore Scozzaro 0711 911 83738
Mr Emanuel Donno 0711 911 82687
Fax: [phone]

5
2. General technical data
Engine type M 97/79
Gearbox type G 97/72
Numbers of gears sequential 6
2.1. Dimensions
Length (w/o spoiler edge) [mm] see homologation papers
Width across front axle [mm] see homologation papers
Width across rear axle [mm] see homologation papers
Wheelbase [mm] see homologation papers
2.2. Weight
Dry weight [kg] see homologation papers

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3. Engine
3.1. Engine technical data
Engine type M97/79
Design Six-cylinder boxer
Cylinders 6
Bore [mm] 102.7
Stroke [mm] 80.4
Cubic capacity [cm³] 3996
Compression ratio approx. 14.5
Maximum revs [rpm] 9,400
Inlet valve diameter [mm] 41
Inlet valve lift [mm] 14
Point of maximum
inlet valve lift [°] after TDC
Exhaust valve
diameter [mm] 35.5
Exhaust valve lift [mm] 13.5
Point of maximum
exhaust valve lift [°] before TDC
Cooling media Water cooled
Lubrication
Dry sump lubrication
Oil-water heat-exchanger
3.2. Fuel specs
98 ROZ

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3.3. Engine power and torque curves