Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSPORSCHE1991911 TURBO F6-3299CC 3.3L SOHC TURBOREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSALIGNMENT
1991 Porsche 911 Turbo F6-3299cc 3.3L SOHC Turbo
Alignment
1991 Porsche 911 Turbo F6-3299cc 3.3L SOHC TurboSECTION Alignment
Wheel Alignment Specifications
The following values apply to curb weight in accordance with DIN 70020 (car with full fuel tank, spare tire and tools).
Front Axle
Height Adjustment: [1] 175mm ± 10mm
Max. Difference Left to Right 10mm
Toe-In (unpressed) 0°25' ± 5'
Track difference angle at 20° lock -1°20 ± 30'
Camber 0° ± 10'
Max. difference LH to RH 10'
Caster 4°25' (+15'/-30')
Max. difference LH to RH 15'
Rear Axle
Height Adjustment: [2] 280mm ± 5mm
Max. Difference Left to Right 10mm
Toe-In per wheel 0°15' ± 5'
Max. difference LH to RH 10'
Camber -0°45' ± 10'
Max. difference LH to RH 20'
[1] From wheel contact area to outer hex head bolt on cross member/body mount.
[2] From wheel contact area to measurement surface on control arm mount, outside (body side).
The following values apply to curb weight in accordance with DIN 70020 (car with full fuel tank, spare tire and tools).
Front Axle
Height Adjustment: [1] 175mm ± 10mm
Max. Difference Left to Right 10mm
Toe-In (unpressed) 0°25' ± 5'
Track difference angle at 20° lock -1°20 ± 30'
Camber 0° ± 10'
Max. difference LH to RH 10'
Caster 4°25' (+15'/-30')
Max. difference LH to RH 15'
Rear Axle
Height Adjustment: [2] 280mm ± 5mm
Max. Difference Left to Right 10mm
Toe-In per wheel 0°15' ± 5'
Max. difference LH to RH 10'
Camber -0°45' ± 10'
Max. difference LH to RH 20'
[1] From wheel contact area to outer hex head bolt on cross member/body mount.
[2] From wheel contact area to measurement surface on control arm mount, outside (body side).
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.