For pressure to be developed in a pipe two things have to be present - flow
from the pump one end and resistance to it escaping the other. Insufficient
flow from the pump, or not enough resistance i.e. worn bearings with big
gaps, will result in low pressure. If the relief valve was opening at
10-13psi then I would expect the pressure to *never* rise much above this
point in a typical MGB engine, and as such it is probably starving the
bearings of oil.
PaulH.
----- Original Message -----
From: "Thomas J Pokrefke" <pokrefke1@comcast.net>
To: <mgs@autox.team.net>
Cc: <lynnwp@cablelynx.com>; <tjplwp@cablelynx.com>
Sent: Tuesday, March 30, 2004 4:20 AM
Subject: Oil Pressure Update
> My theory is that while driving, the oil pump produces enough pressure to
> give me the 10psi/1,000rpm, but while idling with a sump of hot oil, the
> pressure valve was opening around 10-13lbs/in2.
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