Re: BBC broken crankshaft
I don't know if you ever wet magged your crank,if you did'nt you should everytime it is out,every crank that comes through my shop gets magged even if comes in for a polish,
I've used alot of GM steels over the years,the black cranks(tufftrided) always seemed a little better,once you got them straight,most of them had around .003-006 runout on mains when new,always was told from tufftride process?
Was your engine external balance? External balance 454 and 400 small blocks always had more crank trouble than internal balance 396/402/427.
I've always been told that ext.balance flywheel/balancer exerts force on crank because they are trying to go horizontal,and puts more pressure on crank,we always called it gyroscoping effect,I don't know if that is scientific term,or Hillbilly slang
So does Eagle have translators or speak chinese so they can know about the processes their cranks go through during the casting/forging process LOL
MikeTaylor 3601
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