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k24u	06-20-2006 08:23 AM

Oil psi

What does everyone think? Had a stock 330hp 454 put in a melling high volume oil pump had a steady oil psi of 60 hot (electric) gauge. Built the motor everything a 420 clone put in a new melling high volume oil pump mech gauge reads 50 psi hot after a hard run 5100 for maybe 2 min oil psi goes down to 42psi back to cruise 3500 back up to 48-50psi. Running 30 wt oil. How come a old used motor would carry better oil psi?

kennyo

06-20-2006 08:40 AM

Re: Oil psi

Sounds like your running good #'s to me. Pumps and bearings have diiferent clearances' , etc.. Mech gauges and electric gauges never read the same. If you want more pressure go to thicker oil.

cstraub

06-20-2006 08:49 AM

Re: Oil psi

Bearing clearance.

mopower

06-20-2006 08:56 AM

Re: Oil psi

Pressure's not terrible. Bearing clearances are probably the culprit. Heavier oil or larger oil cooler would help.

thedonz

06-20-2006 09:55 AM

Re: Oil psi

Quote:

Originally Posted by mopower

Pressure's not terrible. Bearing clearances are probably the culprit. Heavier oil or larger oil cooler would help.

ditto, I'd run heavier oil

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