[TR] How much oil pressure is too much?

Jeff Scarbrough fishplate at gmail.com
Mon Sep 21 18:32:45 MDT 2015

On Mon, Sep 21, 2015 at 7:18 PM, Chris Kantarjiev <cak at dimebank.com> wrote:

> 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.
> 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.

I'm no Mark Donohue, but I suspect that somewhat higher oil pressure may
lead to somewhat longer engine life.

Jeff Scarbrough
Corrosion Acres, Ga.
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