rod problem

vetteguy61 · 10-19-2010, 11:07 AM

I need to know if it's possible for a forged connecting rod to go out of round in 12000 miles. That's on the crank end of the rod.

gmjunkie · 10-19-2010, 11:16 AM

Quote:

Originally Posted by vetteguy61

I need to know if it's possible for a forged connecting rod to go out of round in 12000 miles. That's on the crank end of the rod.

Yeah,It's Possible but not very likely unless you been really,Really cranking that Bad Boy!!~!

vetteguy61 · 10-19-2010, 12:10 PM

It was only street driven. It's my daily driver and was not raced with this motor.

**Rich Z** · 10-19-2010, 03:44 PM

Wasn't your short block recently at LME? And didn't they replace the bearings while it was there? I would think that they would have noticed something like that, if this is the case.

RevXtreme 1 · 10-19-2010, 04:13 PM

It would be a bearing failure. When replacing bearings the crank journals should be measured in 3 places to look for an out of round condition, and of course the rods are measured with the bearings installed and the caps torqued to spec. Then compare to the crank journal to arrive at the correct tolerances. So doubtfull it was the rod it'self, but a bearing failure. The key is to detrimne what caused the failure.

vetteguy61 · 10-19-2010, 06:30 PM

The motor hasn't been run since it was rebuilt. Had to get my car out of another shop and all that was in it was the short block.