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Re: High capacity oil pumps
[Re: RapidRobert]
#661104
04/05/10 12:15 AM
04/05/10 12:15 AM
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Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
dave571
master
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master
Joined: Dec 2003
Posts: 5,314
Carstairs, Alberta, Canada
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Quote:
Quote:
I am new to this forum and am unsure if the stock capacity pump will be okay. Can a HV pump be used with a stock capacity pan? Or will I need a deep-sump type.
(1) welcome aboard (2) stock capacity (std vol) pump is plenty adequate, hi vol pumps waste power and can excessively wear gears/hex and have been known to snap inter shaft hexes & not needed unless have large clearances/modded passages (3) sure, you wont pump a pan dry as the passages will only flow so much whether you have 30 or 90 psi) (4) deep sump not needed
oil pressure is what protects the motor from failure. This is produced by squeezing a volume of oil through the bearing clearances. More oil, more pressure.
Hence, a high volume pump is only needed on a motor that has excessive clearance.(your fresh motor will have tight clearances, that require a volume of oil that would most accurately match a std volume pump) HV pumps were developed to improve oil pressure in worn out motor's, NOT to provide better oiling in performance builds.
FWIW I run a standard pump on my 440. It always has lot's of oil pressure. If the pressure is right with a std volume pump, then that is all you need 
Last edited by dave571; 04/05/10 12:16 AM.
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