for my rods I am looking at .0015 clearance, I would like to be able to take the motor to 6500 and not have to worry about it. is this too tight to be safe? or should i get the x bearings?

 

Rods-.0025-.0027
Mains-.0027-.003

This is what I use with "H" series Clevitte brgs. A MEASURED(not plastiguage) 1.5 is a bit snug.

 

for me i have two options... the plastiguage... or measure everything with veneer calipers... either way im screwed! .001 is the limit... my is calibrated but i dont think it is .0001. maby .00025

thanks 1

 

Personally I would get a shop to measure it. Putting it together not knowing and have something happen later,sucks.Factory is .0013-.0035. The 13 is way to tight IMO if ya gonna turn any RPM's,.0025 IMO would be the min on both the rod's and main's.