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Matt.S_951 Matt.S_951 is offline
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Join Date: Aug 2014
Posts: 13
How to diagnose worn rod bearings

Hi all.

I need advice for how to tell if my rod bearings need to be replaced.

Background: my car is a 2.8L stroker with a big turbo and all the other normal addons. It also has a big front oil cooler and a baffle plate in the oil pan. The engine was built in 2002 and has been in a few cars since then. 3 years ago it went into my car and has been used for about 5 De's a year. I bought the car last fall.
I don't know when the last time the bearings were changed.

In normal street driving, oil pressure stays high. Because of the oil cooler, oil temp stays at about 120 c on the street.

I did a de last weekend. Car ran great, but I was to busy driving to look down at the oil pressure. On track the oil temps reached about 200 c.

Before everyone says the obvious, I know I should replace the bearings. Problem is I have 3 De's coming up, and I'm not sure I have the time to do the bearings before then.

I am hoping someone can give me pointers on how I can diagnose the condition of my bearings. For example: with oil temp at x, and rpm at y, oil pressure should be z. I realize that all of my mods make this a difficult question.

Thanks for the help
Old 03-24-2015, 06:22 PM
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