[Healeys] Oil pressure

[Bert Van Brande]

On a 4 or 6 cylinder car?  Oil pan gasket installed correctly?  Too much
sealant?  Oil return passage (partially) blocked?  
On a 4 cyl the release
valve opens to a passage to drain oil back to the sump (pan), there is a notch
in the gasket to allow for this.

On an engine that idles the return might be
just big enough to allow for the pressure valve to do it's job but on a faster
revving engine the same return might be obstructing excessive oil return.
Bert




________________________________
 From: Magnus Karlsson
<magnuskarlsson at bornet.net>
To: Healey Lista <healeys at autox.team.net> 
Sent:
Wednesday, May 15, 2013 4:13 PM
Subject: [Healeys] Oil pressure
 

I have a
problem with an engine that I just restored completely. The oil
pressure gets
too high when revved over 2500. The pressure reaches all the way
up too 80
psi, which of course is way too much. The strange thing is when the
engine is
cold and you rev it, the pressure will not rise above 60 psi. Quite
contrary
to the normal behavior. The oil pump is a new Denis Welch unit, the
oil
pressure release valve and spring are new, all bearings in the engine are
new,
all parts have been machined to the right tolerances. I4ve tried with a
used
release valve and spring that is quite softer than the new one. Resulting
in
the same high pressure.

This has got me quite puzzled and I ran out of ideas
on how to solve this. Has
anyone experienced the same symptoms and did you
find a working solution? I4m
desperate for good advise!

TIA,
www.concourshealeys.com
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