[s-cars] Rods and high HP: Oil Issue??

[Djdawson2 at aol.com]

In a message dated 3/22/04 4:12:22 PM Mountain Standard Time, 
tfrank at symyx.com writes:

> Break in period is a definite.  Especially early on you really want the
> motor to temp before you give it much boost.

>From what I understand, his engine had better than 500 miles on it.  I don't 
buy break in as the issue WRT rod bearings.  Race motors, even though 
generally built "looser" are run full blast with very minimal break in.

> 
> Tolerance's are often the issue here as well, could have been that his
> crank had some bad wear, that his rod's where beat up a bit and not
> true, same with the crank, if he had the crank ground or rod's ground
> the dimensions could be off.  Too tight or too loose can result in
> spinning a bearing.
> 

That's my bet... possibly improper clearance on the rod bearings, or 
mistorqued.  Bearings don't spin for no reason.
.02 worth,
Dave in CO