Luce:
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If the pressure is below the bypass pressure, all other things being equal in a loose engine, the HV pump will read a higher oil pressure than a standard.
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Yes, I agree with that statement........
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The bypass setting will be the absolute maximum oil pressure you see. I don't know if the bypass pressure is the same between the two pumps. Doesn't matter to me. I want the HV for when the bypass is closed and I'm hot idling after kicking it in the teeth. I want my hydrolic lifters to not bleed flat.
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o-k, I agree with that also,in that case, a HV pump is not a bad choice...
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If you tell me I should have the correct bearing clearances instead and the HV pump is a bandaid masking a bigger problem, I'll have to agree. But the HV pump might make a tired old engine make it through the season and that's good enough reason for me.
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Not saying your bearing clearances are out of whack,I have no idea what they are.
Second sentence, most definitely,a HV pump will help a tired old engine go many more miles....
Not saying nor never said that one should NOT use a HV pump, they have their place,I just think they are over used.....
Ever pull a valve cover off and start the engine,just to see how much
oil is flowing out of the pushrods???? I have, on many occassions,actually the last time was yesterday, changing a seeping valve cover gasket on a newly built 331 stroker... the engine had been run for 30 minutes, the oil temp was 160 and the idle oil pressure was 40 psi, while I had the valve cover off, I started the engine, the back 4 pushrods were shooting a stream of oil that cleared the head by 6 inches!!!!! the front 4 pushrods were shooting a stream of oil that was just cleared the head.not quite,but close to a solid stream of oil coming out of them all this at 40 psi, can't imagine how much oil would be pumped thru the pushrods at 60+ psi.....this engine had 15/40 Shell Rotella T oil and a Melling High Performance STANDARD volume/STANDARD pressure oil pump on it.
David