View Single Post
Old 08-30-2013, 09:05 AM   #9
Mike Taylor 3601
VIP Member
 
Mike Taylor 3601's Avatar
 
Join Date: Oct 2008
Location: Somerset,Ky
Posts: 1,372
Likes: 354
Liked 307 Times in 103 Posts
Default 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
Mike Taylor 3601 is offline   Reply With Quote