Main and Rod Shim Sequence ???

[Kohnke Rebabbitting]

Originally Posted by 40 Deluxe

Adjusting the bearings was an accepted service procedure back then. In fact, the Model A Instruction Book says "If a bearing has become loose it should be adjusted by an authorized Ford mechanic." Many A's, probably most, needed at least a valve and ring job during their lifespan which included adjusting the bearings unless it was a backyard job. My question is, How many broken cranks resulted from the resulting "bowing" effect? In spite of all the adjusting that went on, A's did not have a reputation for breaking cranks (such as Chevy's reputation for broken axles at that time).

To answer your question, on what we have found, was about 33 cranks, in about 55 years, not broke, but cracked, and not usable. We have never used any crank shaft, with out magnafluxing it first, on any kind of car.

Thanks,

Herm.