1999 Chev C2500 5.0 crankshaft

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Billy Vmax - 16 Oct 2009 07:21 GMT

This may be crazy, but here goes. I spun a bearing on this truck. As
far as I can tell with he engine still in the truck the rod on that
throw seems ok.
My question is .. Has anyone removed the engine, put it on an engine
stand, turned it upside down and changed the crank without disturbing
the top end.
The top end is in great shape. Seems like it should work. I think even
if the rod is bad it could be pulled far enough out of the cylinder to
change it.
What do you guy's think?

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Kruse - 17 Oct 2009 03:52 GMT

> My question is .. Has anyone removed the engine, put it on an engine
> stand, turned it upside down and changed the crank without disturbing
[quoted text clipped - 3 lines]
> change it.
> What do you guy's think?

First, why is this posted on a Ford forum? Whatever.
On some engines you MIGHT be able to do it, but off hand, I can't
think of one.
What are you going to do if the piston pin is a pressed fit in the
connecting rod? Even if you have retaining locks in the pistons, it
still won't work.
Compared to what you have to spend, head gaskets are cheap.
Plan on disassembling the engine with the heads OFF.

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Jim Warman - 17 Oct 2009 06:58 GMT

Assuming the bearing that spun is a rod bearing, the connecting rod is now
junk... the rod bearing bore will not be round nor will it have the correct
bearing "crush".

Good judgemnet comes from experieince.... unfortunately, experience comes
from bad judgement.

> This may be crazy, but here goes. I spun a bearing on this truck. As
> far as I can tell with he engine still in the truck the rod on that
[quoted text clipped - 6 lines]
> change it.
> What do you guy's think?

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