Re: Oil pressure concern
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Re: Oil pressure concern



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If you use full groove main bearings, they don't show as much pressure as
regular main bearings. And excess oil pressure cost horsepower. I've always
heard the it only take about 2 lbs. of oil pressure per 1000 RPM to keep a
engine running but I wouldn't won't to race that way.
Gary Bradshaw
Cowtown Mopars
Ft. Worth, Texas

----- Original Message ----- 
From: "Schuyler Wrobel" <schuyler62@xxxxxxxxxxxxx>
To: <1962to1965mopars@xxxxxxxxxx>
Sent: Sunday, April 10, 2005 2:58 PM
Subject: Re: Oil pressure concern


> Hmm, I did a very similar build for the 318 Poly in my Dodge wagon
> (except the rod and crank bearings) and it to gets the same low oil
> pressure readings, but I've been attributing mine to a leaking rear
> main seal.
> And I've noticed that the cooler I can keep the car the better the oil
> pressure,
> anything, say, over 185 degrees and the oil pressure starts to suffers.
> Let me know
> if you find out any thing more.
>   thanks
> Schuyler 62 Dodge Dart 440 wagon w/ Poly 318
>   <http://www.1962to1965mopar.ornocar.org/ml-wrobel62.html>
>
> On Apr 9, 2005, at 10:11 AM, Kevin Merkley wrote:
> >
> > Hi,
> >
> > I have been running my 313 poly engine since it was overhauled last
> > spring and have a concern.
> >
> > Last spring I changed the cam bearings, crank bearings, con rod
> > bearings, oil pump, timing gears and chain, and stock rings.
> >
> > When the engine gets warm and as it approaches operating temperature
> > the
> > oil pressure drops dramatically.  At cold start the pressure is at 60
> > psi.  At a hot idle (in neutral) the pressure is close to 10.  The
> > manual states that at hot idle (500 rpm) the pressure should be a
> > minimum of 20 psi.  The manual also states that at 1000 rpm the
> > pressure
> > should be between 45-65 psi.
> >
> > At 1000 rpm I get 30 psi.
> >
> > The filter is new and the engine has about 2 hours running time on
> > since
> > overhaul and approximately 10 miles.
> >
> > What are the likely problems that could cause the low oil pressure?
> >
> > btw, the engine sounds fine and does not knock or anything out of the
> > ordinary.
> >
> > I am spooked and expect that after the car comes back from the paint
> > shop it will have the engine yanked and torn apart again.  I'm not
> > pleased but do not know what things to look for.
> >
> > Please help.
> >
> > Thanks.
> >
> > K.
> >
> >
> > Kevin R. Merkley
> > Thunder Bay, Ontario
> > 64 Dodge 440 2dr HT (Cdn)
>

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