Quote:
Originally Posted by bhill86
Is this a standard recommendation when installing a 60lb pump or is it only for certain circumstances? As part of my “quick fix” on my engine I’m replacing my current 80psi pump with a 60psi. Not sure if I should try the shim or leave it be. Mild (at best) street motor FWIW
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You have to shim it if you pull out your 5/8" check ball and install a 9/16" ball.