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rotorwrench · 09-20-2021, 07:37 AM

The crankshaft and rear main thrust face affect the shaft end play. There used to be some main bearings available that had a .010" thicker thrust face but I don't know what is available in the modern era. There should be no more than .006" if I remember correctly.

Check your starter ring gear, If it has moved off its normal seat area then it might rub.

Excessively worn crankshaft thrust faces indicate some hard clutch use at some point in the past. Larger trucks with the 11 inch clutch can be found with end play problems and so can race car set ups where clutch use is heavy.

09-20-2021, 07:37 AM	#4
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,431	Re: ‘52 Flathead crankshaft end play The crankshaft and rear main thrust face affect the shaft end play. There used to be some main bearings available that had a .010" thicker thrust face but I don't know what is available in the modern era. There should be no more than .006" if I remember correctly. Check your starter ring gear, If it has moved off its normal seat area then it might rub. Excessively worn crankshaft thrust faces indicate some hard clutch use at some point in the past. Larger trucks with the 11 inch clutch can be found with end play problems and so can race car set ups where clutch use is heavy.