Massey 44 Special oil presure?

Scott(IN) · Apr 15, 2014

I just overhauled a 44 Special engine. Today was the first day of running it and the oil pressure is 50#. Could be more because the gauge only goes to 50#. At idle it goes down to 45#. I can not find what the pressure should be normally. Is this a problem? If so how do I fix this. Engine runs fine otherwise.

Anonymous-0 · Apr 15, 2014

20 PSI IS A NORMAL MAX PRESS FOR JUST ABOUT ALL OF THOSE MH (CONT) ENGINES

David G · Apr 15, 2014

The revised pressure relief will run about 30PSI at idle.

Did you shim it up any?

Scott(IN) · Apr 15, 2014

I did not change anything.

David G · Apr 15, 2014

That does seem high, but I had that much pressure on mine and it did not seem to pump it all on top. I would not worry about it, as long as it does not go higher when sped up.

chuck41 · Apr 15, 2014

Hi Scott, I no longer have a manual, but I know
that pressure is too high. As said most Cont.eng
pressures were in the twenties. Chuck

David G · Apr 15, 2014

The reason the oil pressure was in the 20s was due to the original relief valve. The replacement have a stiffer spring and will run higher.

Dieseltech · Apr 16, 2014

Gas usually run 15-20 PSI oil pressure. Diesels 40-50 PSI. Same pump, but different spring. When at the MF dealer years ago the boss liked to flip over the relief spring cup to raise the gas pump pressure.

Jim CIn. · Apr 16, 2014

Pressure regulating valves on 44's were set at 16 PSI, but one of mine that I purchased about 15 years ago runs 50
psi, engine does not seem to care.

Massey 44 Special oil presure?

Scott(IN)

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Anonymous-0

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David G

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Scott(IN)

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David G

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chuck41

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David G

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Dieseltech

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Jim CIn.

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