Join Date: Apr 2004
Location: Round Rock, TX, USA
Re: Sheared Off Cam Bearing Studs
I broke a grade 8, 3/8 diameter bolt in a HD.
Before the chants "Thor, Thor, Thor!" begin, let me tell ya what we found.
When we pulled the bolt from the engine and compared the parts we found a HUGE void, almost like corrosion in the center of the shank, flush with the underside of the bolt head I twisted off..
So, it was a defective bolt... yes, it was marked "China"... surely not an issue... just sayin'... ymmv.
My guess is just a defective "stud"... they are not xrayed or inspected... they are bought in bulk I'll bet...
Ok.. Thor, Thor, Thor!!!