Listers:
I have found this discussion very interesting, but it seems to
me that we are omitting a
very important point. Oil pressure can be modulated by the viscosity and
type of oil used, no?
So it seems that another point to check is the viscosity of your
oil, and whether or not
it is multi-viscosity rated. It also seems to me (although I have no
first hand experience) that
a synthetic might make a difference, as they don't thin as much when
warm. So your hot oil pressure
might not fall as much with a synthetic. I say this based only on a
limited understanding
of the virtues of synthetic, so please correct me if you have experience
here.
Comments?
Vance
-----Original Message-----
From: owner-6pack@autox.team.net [mailto:owner-6pack@autox.team.net] On
Behalf Of Sally or Dick Taylor
Sent: April 28, 2005 11:30 PM
To: 6pack@autox.team.net
Subject: Re Low oil pressure
Brian---Others have hinted that increasing the oil pressure relief
spring tension will NOT help the numbers seen on the dash gauge. This
is pretty much correct. The only added pressure from doing this will
come when the oil is cold, when you need less pressure. The bi-pass
kicks in when the pressure exceeds the rate of the spring, allowing some
of the oil to return to the sump.
Your 50 lb. of (hot) pressure at road speed is a little low. Sometimes
just a change of rod and main bearings will restore the pressure up to
65-70 lb., which is good.
At this time, I wouldn't be too concerned about the pump itself needing
looked at. Nor the set screw (plug) on the rockers. (See my other
blah-blah on this subject)
Dick
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