What are people using for oil pumps now. I building 383 turning 7200 in a stock block. Would like to stay with a cast unit that does not cost a fortune.
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What are people using for oil pumps now. I building 383 turning 7200 in a stock block. Would like to stay with a cast unit that does not cost a fortune.
Milodon 18750 5/8 sump inlet - 18770 3/4 sump inlet
melling 10552c
m55 is all I have ever run and have had ZERO failures due to no oil!
Why a Standard volume high pressure as opposed it hv lp? Or both high volume high pressure?
High volume just uses horse power. You will have plenty of pressure with the standard pressure.
@usafracer, how much HP loss?
Lmao!!! Ya it was on that exactly, I had only put on roller rockers on the last couple races I ran that motor. Std it is, any issues running that with a 20w50 type of oil mixture?
This was going to be in a motor turning 7200. If you guys want to put a stock pump in yours go ahead. I wouldnt do that in a motor turning that many rpms. M55hv pumps were junk a few yrs ago. the ended up in the broken in the bottom of the pan. Opinions are like a$$holes, everyone has one.
14 years using m55hv pumps, no problems 20_50 oil
I have used the same that's why I'm so like Wtf lol...?!?!?
Guess I'll ask the builders around what they use here as we get a little warmer in the summers then most of the Midwest, heat races at 110* suck.
I know most use 5w50 to 20w50 for oil. Called me crazy when I put 10w30 in lol.
I do understand as clearances get tighter and oil gets better that there is no need for gallons of oil to flow as before, just clairify one vs the other.
Any builders on here wanna chime in would be appreciated, basically I'm running an equivalent to a 365 A mod motor turning 7000-7500.
We run a 355 to 8200 every night with a regular m55 pump pushing Brad Penn. No oil pressure problems whatsoever. Our builder doesn't build anything with a hv pump.
Biggest pump I use is a 10552 and the smallest pump is a DRLV Drag race Low volume pump with great results.
Under race conditions if I have 60 to 70 pounds I have more then enough volume, HV pumps do raise oil temps over a std. volume pump, When the oil is being bypassed it just goes around and around in the pump till it can be used its creating heat and it does whipped the oil up as well.
HV pumps do cost HP.
WTF. Bearing clearance regulates the oil that flows between the rods not side clearance.
I have built some piston guided rod engines that have .110 side clearance and have used a M55A pump and no issues.
I have built some Honda rod 283 main circle track engines and HV pump would not work on those engines and they turn 7500 with zero problem's!!!
I have never needed HV pumps with my builds but I guess you have to know what your doing !!!!
Well I see a lot of 602 circle track crate engines and I have seen some with a s little as .010 side clearance engines ran fine oil temps around 220 with no cooler and during a rebuild I open the side clearance up to at least .018 and so far oil temps don't seem to run cooler!!!
I have been building circle track engines for many years now and have seen side clearance from .015 to .045 and no big difference in oil temps.
Bill Hendrens always said the same thing I have said its the bearing clearance that regulates the flow of oil between the rods not side clearance. So far performance rods for GM builds are .940 and will give you appox .016 side clearance..
i think im gonna run stock car drivers new setup:)
Are you a true engine builder where you do your own machine work or just an assembler??
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