On Wed, 3 Jan 2007 14:13:28 -0800, "Aluckyguess" wrote:

I have a Bonanza V35 with a IO 470. Before and after engine overhaul the oil
pressure after the engine warms up goes just into the red. They have tried
turning the pressure up but this seems to only make the pressure go up when
cold. If the temperature outside is real cool the pressure goes over 200
psi. The engine builder said its in spec. I think there is a problem
somewhere. I want the oil pressure to run in the green. Does anybody have
any ideas on what could be causing this. I'm afraid its going to blow the
gage out one cold morning.
Thanks


When this was happening to my Lycoming IO360A1A, the problem turned out to
be a leaking nose bearing. Oil temperatures were also running high.

It was diagnosed by measuring differential pressures between the front and
rear of the case.
--ron