RE: Oil pressure concern

[Tracey Robinson <maxwedgenut@xxxxxxxx>]

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several things. too much bearing clearance, too much oil pump rotor
clearance just to name a few. Did you resize the big end of the rod during
your rebuild? I had the same problem with a 440 years ago, come to find out,
I had too much rod bearing clearance. It doesn't take much to make a
considerable difference. I ended up spinning a rod bearing soon after
discovering an oil pressure problem.

-----Original Message-----
From: Kevin Merkley [mailto:krmerkley@xxxxxxxxx]
Sent: Saturday, April 09, 2005 12:12 PM
To: 1962to1965mopars@xxxxxxxxxx
Subject: Oil pressure concern



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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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Please address private mail -- mail of interest to only one person -- directly to that person.  I.e., send parts/car transactions and negotiations as well as other personal messages only to the intended recipient, not to the Clubhouse public address. This practice will protect your privacy, reduce the total volume of mail and fine tune the content signal to Mopar topic.  Thanks!

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