You are absolutely correct!!
There is NO fallacy in your thinking.
Michael Salter
On Tue, Sep 28, 2010 at 11:42 AM, <healeymanjim@hansencc.net> wrote:
> i am having trouble understanding how increasing the spring strength in the
> oil pressure relief valve will increase oil pressure. this spring is
> calibrated to keep the oil pressure in the engine to below aprrox 60 psi.
> when the oil is cold and the pressure is above that, the spring is
> compressed and excess oil returns to the sump. once the oil heats up enough
> to allow the pressure to decrease below 60 psi the relief valve closes,
> never to enter the equation again. increasing the spring strength would
> only cause the relief valve to come off the seat at a higher pressure, i.e.,
> 70 psi with cold oil. i cannot see where increasing the strength of the
> spring would do anything to increase the pressure of hot oil, say from 35 to
> 45 psi. where is the fallacy in my thinking? hjim
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