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 MANUALSPONTIAC19871000 2D HATCHBACK, AUTOMATICREPAIR AND DIAGNOSISENGINE MECHANICALMECHANICAL1.6L 4-CYL - VIN [C]ENGINE SPECIFICATIONSBEARING SPECIFICATIONS
1987 Pontiac 1000 2D Hatchback, Automatic
Bearing Specifications
1987 Pontiac 1000 2D Hatchback, AutomaticSECTION Bearing Specifications
CRANKSHAFT MAIN & CONNECTING ROD BEARINGS
| Application | In. (mm) | ||
|---|---|---|---|
| Main Bearings | |||
| Journal Diameter | |||
| Nos. 1-4 | 2.0079-2.0088 (51.000-51.024) | ||
| No. 5 | 2.0073-2.0083 (50.987-51.013) | ||
| Clearance | |||
| Nos. 1-4 | .0006-.0018 (.014-.047) | ||
| No. 5 | .0009-.0026 (.024-.066) | ||
| Thrust Bearing | No. 5 | ||
| Crankshaft End Play | .004-.008 (.100-.202) | ||
| Connecting Rod Bearings | |||
| Journal Diameter | 1.809-1.810 (45.958-45.984) | ||
| Clearance | .0014-.0030 (.036-.078) | ||
| Side Play | .004-.012 (.110-.316) | ||
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.