RE: High oil pressure

From: Ronald Wong (ron-wong@home.com)
Date: Wed Aug 01 2001 - 20:35:46 EDT


Must you yell??

Ron
00 PB SLT QC 4X2 5.9 46RE 3.92 LSD
For modifications see my DML Profile (URL follows)
http://www.twistedbits.net/WWWProfile/dakota/Kw9pV1EkFeOYY

-----Original Message-----
From: owner-dakota-truck@buffnet.net
[mailto:owner-dakota-truck@buffnet.net]On Behalf Of kwreimer
Sent: Wednesday, August 01, 2001 3:14 PM
To: dakota-truck@buffnet.net
Subject: Re: DML: High oil pressure

YOUR TRUCK OIL PREASSURE IS NORMAL. ALWAYS READS MORE WHEN COLD,UNTIL THE
OIL WARMS THEN IT THINS CREATING LOWER READINGS.AND CRUISING SPEEDS 35-45
NORMAL... DONT SWEAT IT.
----- Original Message -----
From: "Bob Tom" <tigers@bserv.com>
To: <dakota-truck@buffnet.net>
Sent: Wednesday, August 01, 2001 1:26 PM
Subject: Re: DML: High oil pressure

> At 03:03 PM 8/1/01 -0400, you wrote:
> >Well I just installed an Auto Meter mechanical oil pressure gauge a
couple
> >of days ago to help keep an eye on the 360 that was installed a couple of
> >weeks ago. The motor has about 1100 miles and I'm running 5 w 30 dino oil
on
> >it now and the oil pressure has me a little concerned. The stock gauge
has
> >always been erratic so I didn't trust it, but when I installed the Auto
> >Meter it shows 70 PSI at idle and as much as 78 PSI when accelerating
> >normally when cold, after it warms up it's at 15PSI at idle and 40-50
> >PSI(depending on what speed) on the freeway, and up to 60-65 under WOT. I
> >don't have a problem with the readings after it's warmed up, but the
70-78
> >PSI when cold seems to me to be a little high, especially as the outside
> >temps are in the 80-90's, what the hell is going to happen when it's cold
> >out. I can't think of anything other than the oil pump causing this,
isn't
> >there some sort of check valve in the pump. Any idea's or suggestions
would
> >be appreciated. Thanks Sam South
>
> I don't think that you're cold start oil pressure is too high, especially
for
> a freshly rebuilt one.
>
> Generally the only "problem" high oil pressure will have is higher oil
> temperature
> and the oil filter gasket leaking (you'll have to get a lot higher to
> explode the oil filter).
> It could also cause the oil filter by-pass to open when the engine is
cold.
> This would
> let unfiltered oil go through the engine (but this happens anyways from
> time to time).
>
> There is an oil pressure relief spring on the oil pump which can be
> adjusted by adding
> or removing shims. Removing shims decreases pressure.
>
> I would just see if there are oil spots appearing on the driveway or road
> after a period
> of parking, or, from time to time, take a look and see if any oil is
> leaking from the
> gasket along the side the oil filter.
>
> Bob
>
>



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