hello, i just had my engine built here in AZ by RPM engine development (aaron from full race told me to go here) and i had a concern on my main bearing clearances.... Larry the builer said the tightest he could get them were .0018-.002(the factory limit) i am worried that i might spin a bearing with them on the loose side.... he used clevite bearings, should i be worried? it is a b16 that i plan on running in the 400-450whp range what would you reccomend?

HERE ARE THE CRANK MAIN MEASUREMESNTS:
1- 2.1647
2- 2.1649
3- 2.1644
4- 2.1647
5- 2.1649

RODS:
1- 1.7713
2- 1.7713
3- 1.7713
4- 1.7712

DOES EVERYTHING LOOK OK? (I HOPE SO BECAUSE THIS MOTOR IS ALREADY ASSEMBLED AND BALANCED!)

 

Thats fine, I prefer them on the loose side. What are your rods clearence?

 

I THINK THE RODS CAME OUT THE SAME, I HEARD THAT .002 IS THE IDEAL CLEARENCE FOR A ROD TO INSURE PROPER OILING...

 

I like leaving my clearances a more on the tighter side and it has worked very well for me. It usually under .0015 but never less than .001. I still think that .002 is too much on the loose side. Many leave them around .0015-.0017 but if your builder knows what he is doing and has had success I'd just leave it.

 

THE BUILDER BUILDS HI HORSEPOWER (1000+) SAND RAIL AND BOAT MOTORS, AND WAS PREVIOUSLY EMPLOYED BY JACK ROUSH, I HOPE HE CAN HANDLE A LITTLE HONDA LOL, JEFF EVANS SAID THESE CLEARENCES SHOULD BE FINE

 

why not use honda bearings to get proper/safe clearances. .002" clearence is ok if you plan to run thicker oil all the time.