Mike Stirewalt wrote: > What is "crankcase fretting?"
One example of crankcase fretting is wear that occurs when the case halves that make up the "crank cradle" rub against one another, because operational forces momentarily (during each piston throw) relieve the bolt tension that normally holds the two halves tightly together. The displacement of the material at the joints allows the case halves to clamp together tighter when the engine isn't running, which has the effect of tightening the main bearings against the crank, in this example. -- Mark Langford ML at N56ML.com http://www.n56ml.com
