Blue Thunder Aluminum Intake
Valve Lash Procedure
Stealth Aluminum Intake
Thanks to Dan Davis for providing this procedure.
Valve Lash Made Easy
I was helping a friend lash his Mopar engine and I
noticed that Mopar Performance had a decal outlining an easy way to do valve
lash. I took that idea and made a chart for use in our cars. It will work for
hydraulic or solid cams and reduces cranking the engine over from a couple of
dozen to 1.75!
In the case of hydraulic, the lifter manufacturer will supply a preload spec. If
you have an adjustable valve train, you can easily adjust to this spec by
counting the number of turns of the nut. With a 7/16" stud, each quarter
turn is 0.0125"; with a 3/8" stud, each quarter turn is 0.0104".
It's different for each lifter manufacturer, so check with them for their spec.
EXAMPLE: my Crane lifters want 0.020-0.060" preload. I hand tightened the
nuts until zero lash (you can tell as the nut has some resistance). I then
turned the nut 3 quarter turns to achieve 0.0375" reload, in the middle of
Hope this helps,