According to my specs, Mk3 engines (1296) should run at about 50psi at 2,000
RPM. If you're only running 45 psi at 3,500-4,500 RPM, I think that Joe
might be onto something,
Best wishes,
Jeff in San Diego
'67 RHD Spitfire Mk3 aka "Mrs. Jones"
Jeff's Classic '67 Spitfire Mk3 site & Vintage Spitfire Webring
http://www.ohms.com/spitfire/spitfire.shtml
home of the NEW Totally Triumph Auction
"By Triumph enthusiasts, for Triumph enthusiasts"
http://www.ohms.com/cgi-bin/TRauction.cgi
and... The Triumph Autos/Parts Wanted Listings
http://www.ohms.com/cgi-bin/TRwanted.cgi
...plus a few other surprises!
* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
----- Original Message -----
From: Joe Curry <spitlist@gte.net>
To: <trunnell@mindspring.com>
Cc: <spitfires@autox.team.net>
Sent: Tuesday, May 09, 2000 7:19 AM
Subject: Re: Oil preferences
>
> Glenn,
> My oil pressure does not have the drop that you mention. I use the same
oil you do. The difference may be in the engine. As the
> thing heats up, tolerances become wider, oil galleries and bearings widen
and more oil flows causing the pressure to drop. How long
> has it been since the engine was overhauled? This might be an omen of an
impending overhaul in your future.
>
> Joe
>
>
> Glenn wrote:
> >
> > Hi,
> >
> > Since I installed my oil pressure gauge I am amazed at how much the
viscosity drops during highway driving especially on hot days. I am
currently running Castrol GTX 20-50. After driving about 40 miles to work
at about 65- 75 mph the oil pressure will drop to about 45 psi at speed and
about 15 psi at idle. Around town the pressure drop is not as bad. Has
anyone had better success with a different brand of oil. I don't have an oil
cooler, but it's looking like I might need one.
> >
> > Thanks,
> > Glenn
>
>
|