Oil psi
06-20-2006, 08:23 AM
#1
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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?
06-20-2006, 08:40 AM
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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.
Last edited by kennyo; 06-20-2006 at 08:44 AM.
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06-20-2006, 09:55 AM
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Re: Oil psi
Originally Posted by mopower
Pressure's not terrible. Bearing clearances are probably the culprit. Heavier oil or larger oil cooler would help.
