<div dir="ltr"><br><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Sep 21, 2015 at 7:18 PM, Chris Kantarjiev <span dir="ltr"><<a href="mailto:cak@dimebank.com" target="_blank">cak@dimebank.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">One of the famous Mark Donohue "Unfair Advantage" stories is about looking for extra power from a flat-12 Ferrari racing engine, maybe this is the Sunoco 512. One of the things they found when they were looking for extra horsepower was that the oil pressure was very high - I'm remembering 100 psi - and that turning it down got them significant horsepower.<br>
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It's from there, and from Carroll Smith, that I have the rule of thumb that 10psi/1000rpm is *plenty* of oil pressure; much more than that is just wasting power.<div class="HOEnZb"><div class="h5"></div></div></blockquote></div><br></div><div class="gmail_extra"><br></div><div class="gmail_extra">I'm no Mark Donohue, but I suspect that somewhat higher oil pressure may lead to somewhat longer engine life. </div><div class="gmail_extra"><br></div><div class="gmail_extra">Jeff Scarbrough</div><div class="gmail_extra">Corrosion Acres, Ga.</div></div>