Quote:
Originally Posted by seank
Whs. it's alright. No one listens to me either. It needs more oil pressure if you are going to track it hard.
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I haven't worked on an S54, but on an S14 pump volume does not affect oil pressure. There are 2 sets of springs in the pump a horizontal that is the major relief valve (for cold oil start up) and a vertical spring. To increase the pressure you need to shim the vertical spring (2mm shim added approx. 20 psi.) and add a higher pressure Horizontal spring (like on an EVO pump) or completely blocked off (Like on a DTM pump)
From what I have read, the S54 has something similar with a "Pressure Control Piston"