Re: [Classic Mustang] Low Oil Pressure Revisited

I always thought it was 10 PSI per 1000 rpm ...

Simon wrote:
>
>
>
> good rule of thumb is 20 PSI per 1000 RPM's one thing to remember is
> that Oil pressure takes horse power, about 2hp per PSI is the figure
> I've read... May not seem like a big deal but in a performance
> application 20 extra PSI is 40 horses... So the difference between 40
> and 60 PSI at 2000 RPM's is significant. If I was running 70 PSI on a
> fully broke in engine at a steady 2000 RPM's I would run a lower weight
> oil, and if it was a street car I'd probably leave it at that, but if it
> was more performance oriented I would consider pulling the oil pump and
> blue printing it... and making sure the relief was operating correctly.

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