Quote:
Originally Posted by Hoffman5982
I'd have to find where I wrote down all the bearing clearances and rings gaps etc. But it was right in the middle of the oem allownaces. The car is used for drifting. It was a full rebuild with ross pistons and eagle rods. Oil pan is stock, I just rebuilt the oil pump. In all honesty I got the rods and pistons second hand. The bottom end they came out of was a "perfectly running" motor that had a 4 piece piston and 2 mismatched rod caps when I pulled it apart. I ordered 2 new parts. What I think happened is the rotating assembly was out of balance. I emailed Eagle directly about replacement rods and they never said anything about needing to send the set in to match them all up. I found out once the motor was back in the car. My fault for not doing any research.
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Factory tolerance for rod bearings is too tight for an engine that sees abuse. I'd open up the rods to .002" and run a solid 5w40 or 5w50 if I were you. This is the #1 reason that most Nissan engines eat rod bearings at the track.
Also double check the big end dimensions of those eagles, they're notorious for being inconsistent/out of round and needing a resize.