cj428cj,
Well, I really did not want to post my readings on my
oil pressure because of the debate that it would stir up. I have search online as well as books and I have found just as many people say that the pressures are normal as those that say they are too low.
First of all let me provide as much information as possible.
Block is mechanical, so I only have 1 plug behind the timing chain cover related to
oil. This is in place because because I get 80 psi when cold.
Rods are .002 and mains are .0025. I dont believe that these are large clearances.
I am running a pressure relief valve, which is installed correctly that has a 150 psi spring in the back of the block, according to Dove.
The heads have .060 restrictors in the head.
The cam bearings are lined up with the hole.
Oil adaptor does not have the extra hole where it mounts to.
I use to have 2 oil filters and replaced it with 1 filter (Motorcraft ) no difference.
The pump is a Melling HV 57 with a high pressure spring - without shim
The motor has 250 miles and no noises or junk in the filter.
I have noticed that my oil pressure when cold goes to 80 psi after it warms up it drops to 10 psi @ 180-190 water temp. As soon I hit the gas the oil presure shoots up to 40 psi then at cruse speed 2500 rpm oil pressure is 50 - 60 psi.
I am not sure if I install the shim if it will bump the pressure at idle up alittle.
I am running 15w 40 Rotella oil.
And I do not have a oil cooler hooked up.
Your thoughts
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