Thread: 402 oil pressure

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Find the squealing noise, as long as you have oil pressure should be ok, things are getting lubed, oil pressure will fluctuate when motor comes to temp and as oil ages.

Originally Posted by angrystroker

Find the squealing noise, as long as you have oil pressure should be ok, things are getting lubed, oil pressure will fluctuate when motor comes to temp and as oil ages.

I agree, other than the squealing noise you're OK. My SBF stroker did much the same thing - pre-lube pressure of 65 to 70psig, but after it ran a while I get just below 50psig on a cold start, dropping to around 35psig hot, idling down to about 15psig. The guy who built the engine says not to worry about it.

Edit - One thing I'd do is verify your timing. Retarded spark will drop your pressure.

Oil over full?