Quote:
Originally Posted by "QUICK-SILVER"
This not something you could do with a dial/digital caliper?
Correct for how the spring sits on the ball, bore length, then depth (spring rest) in cap nut. Just seems like it would be easy.
Clay
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I took some of those measurements:
a) Edge of regulation Ball to spring nut mounting surface 1.070"
b) Spring free Length 2.300" (My spring was 2.292")
c) Nut mounting surface to pump = .280"
d) Depth of oil spring pocket on the nut = .443"
f) Pump cover height = .625"
So you have all of those different dimensions, all capable of changing during production.
Luhn Performance actually built a 'Oil Pump Dyno' tester that seems to work well and can hit a oil pressure number really close. I believe that they did some actual shim thickness testing and know what a real shim does to the oil pressure.
Might want to call them
Tom V.