Bearing Clearance
12-13-2007, 02:47 PM
#1
Member
JUNIOR BUILDER
Thread Starter
Join Date: Aug 2006
Posts: 68
Bearing Clearance
When i check the oil clearance on the rod bearings with a telescoping gauge and micrometer i come up with .003 clearance.When i use plastigage i come up with .002.I think .002 is too tight but which method is right.The engine is a 620 big block chevy with steel rods.Thanks
12-13-2007, 03:43 PM
#2
Senior Member
RACING JUNKIE
Join Date: Jan 2006
Location: La.
Posts: 2,890
Assuming that you are torqueing the caps on to proper torque specs i would trust the telescope gage more than the plasti-gage, although i don't use either method, i use a dial bore gage which is more accurate, but i also have gage blocks for setting the dial bore gage.
I agree that .002 is too tight for any racing motor and i usually buy .001 over bearing or polish the crank .001 under.
JMO
Zip.
I agree that .002 is too tight for any racing motor and i usually buy .001 over bearing or polish the crank .001 under.
JMO
Zip.
