Evo oil pump Question
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Evo oil pump Question
I've got a 1991 E-Glide with the 1340 evo engine. I would like to install a gearotor pump to get the volume it puts out. If the pump fits a 1992 why won't it fit my 1991?
Cheers,
Fritz
Cheers,
Fritz
HDF Community Team
Joined: Dec 2005
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From: NC USA
On the stock pump covers, the outlets are different also, though most aftermarket pumps allow for either configuration.
If you are considering installing a stronger bypass spring or adding shim to the same to increase oil pressure - I highly recommend against that. A stock oil pump will produce as much volume and pressure as ANY aftermarket pump. There is a technique to bring them back to factory specs, or better, so long as the gears are OK and the inner housing is not badly scored.
Last edited by t150vej; May 9, 2009 at 06:50 PM.
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Harley engines don't require a lot of oil pressure, in fact, most engines don't. Is there a reason you want more volume? Engine builders found out years ago that too much oil pressure is just one more thing the engine has to work against.
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well, I've been told that the stock pump did not supply enough oil to all parts when the motor was hot and at idle. Come to think of it my machine is sound and running well, but it only had 45,000 miles on it. I just want to keep it going, can't afford a new one!
Cheers!
Fritz
Cheers!
Fritz
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Joined: Sep 2011
Posts: 27
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From: Iowa
Evo oil pump
Hi guy's was thinking of replacing my oil pump on my 91 evo,to a revteck oil pump,but what i have read on this fourm,seems like it's a wast of time. Is that true??????? My 91 heritage classic only has like 29,000 miles,but i swear i am hearing things,the motor runs strong through,any advise would be helpfull.thanks
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