I haven't broken it in completely yet. I have probably only let it run for a total of 45min-1hr.

I can't think of any reason it should drop oil pressure. It is a brand new crank (not a regrind). Brand new harmonic balancer. Brand new Clevite HP bearings. New cam bearings. Brand new cam etc. Everything is brand new.

What weight motor oil are ya'll breaking them in with? Maybe I'm using something too thin? (10W40). I did use the moly lube very liberally... and I mean VERY liberally.... used a whole Jar of Redline assembly lube.

In any event, my confidence is a bit better.

Any other insight? Thanks.





Quote Originally Posted by hambiskit
Johnny- have you let the motor break in completly yet? I had a simular experience with a melling pump I installed in a 327, after it broke in good it stablized out to 32 & 56. I was rethinking everything- did I clearence everything, what did I miss, I mean I was going nuts. It was the second oil change that did it. I guess that maybe some of the moly lube was still circulating.
Good Luck.