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 MANUALSOLDSMOBILE1991TORONADO V6-3800 3.8LREPAIR AND DIAGNOSISENGINE, COOLING AND EXHAUSTENGINECYLINDER BLOCK ASSEMBLYCRANKSHAFT MAIN BEARINGSPECIFICATIONSMAIN BEARING DIMENSIONS
1991 Oldsmobile Toronado V6-3800 3.8L
Main Bearing Dimensions
1991 Oldsmobile Toronado V6-3800 3.8LSECTION Main Bearing Dimensions
Crankshaft - Main Bearings Journal
Diameter All 63.470-63.495 mm (2.4988-2.4998 in.)
Taper Max 0.0008 mm (0.0003 in.)
Runout Max 0.0008 mm (0.0003 in.)
Bearing to Journal Clearance 0.0200.055 mm (0.0008-0.0022 in.)
Main Bearing Bore ID 68.250-68.275 mm (2.687-2.688 in.)
Crankshaft End Play 0.076-0.279 mm (0.003-0.011 in.)
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.