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Old 07-09-2009, 08:05 PM   #16
madmax718
Scooby Specialist
 
Member#: 172501
Join Date: Feb 2008
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those .004 is common on older pushrod engines. But even those have tightened up over the years. I just cant imagine someone building a block and calling it good. If the crank was cut, a mic of the journals would net you the diameter..

Standard
Journal O.D.
59.992 — 60.008
(2.3619 — 2.3625)
59.992 — 60.008
(2.3619 — 2.3625)
51.984 — 52.000
(2.0466 — 2.0472)
Bearing size
(Thickness at center)
1.998 — 2.011
(0.0787 — 0.0792)
2.000 — 2.013
(0.0787 — 0.0793)
1.486 — 1.498
(0.0585 — 0.0590)

So, ya, he should be able to tell you if the journals were machined, and if so, what bearing was supposed to be in there. Your supposed to machine it to the undersized bearing so...

Anyways, its just good old forensic detective work. I just wasn't quite satisfied with the answer that "oh it died", or "oh it spun a bearing"- There is a lot of info that we can all learn from your loss, and I'd hate to see that knowledge go the wayside.
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