03-14-2012, 05:45 PM
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Senior Club Cobra Member
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Join Date: Jan 1999
Location: MARKSVILLE,LA.,,
Posts: 3,235
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Quote:
Originally Posted by menace1
Thanks for the info guys, I'm pulling the pan off this weekend and installing a H/V Melling oil pump with a H/D pump shaft and while i'm at it, checking the main bearing clearances with plastic gauge. The reason for all of this is to get idle pressures up from 17 lbs to 20+ and when taching 5-6 G I'd like to see 55+ from the current 38 when hot. Also changing the restrictive oil filter adapter to one made be Beaumont Metals that is far better relieved than the stock unit.
Thanks to Brent for parts help on the pump and shaft...
Glenn |
A H/V oil pump will not increase your oil pressure, just ask the Mellings people, it will increase the volume of oil pumped, thats it....oil pressure is more closely related to bearing clearances and type/weight oil used....... I run a standard volume Mellings HP series oil pump...on start-up, my oil pressure instantly goes to 60 psi,once the oil is warmed to around 150 or more degrees, my idle oil pressure is around 30 to 35 psi, at rpms above 2000, it sits steady on 55 psi...
My guess is your low idle oil pressure could be from type oil pump you have or a worn oil pump along with more than normal bearing clerances or worn bearings...you would also need to check the crankshaft journals to make sure they are within specs and not worn also,putting new bearings on a worn crank is only a bandaid fix,pressure may go up for a while,but will eventually get back to your oil pressure readings you have now.....
David
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