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 MANUALSPONTIAC1989GRAND PRIX V6-191 3.1LREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYPISTON PIN, ENGINE
1989 Pontiac Grand Prix V6-191 3.1L
Piston Pin, Engine
1989 Pontiac Grand Prix V6-191 3.1LSECTION Piston Pin, Engine
Piston Pin Diameter 22.9915-22.9964 mm (0.9052-0.9054 in.)
Clearance to Piston 0.0051-0.0178 mm (0.0002-0.0007 in.)
Fit in Rod 0.0165-0.0464 mm (0.0006-0.0018 in.) Press
Clearance to Piston 0.0051-0.0178 mm (0.0002-0.0007 in.)
Fit in Rod 0.0165-0.0464 mm (0.0006-0.0018 in.) Press
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.