Any increase in idle pressure after pump change ?
03-21-2005, 07:45 AM
#1
Staging Lane
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Any increase in idle pressure after pump change ? Has anyone noticed an increase in the idle oil pressure after changing to a ported pump ? If so how much of an increase.
Thanks, JIM
Thanks, JIM
03-21-2005, 01:31 PM
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I'm talking about pressure outside of the pump. If you enlarge the exit then you would reduce the pressure while increasing the volume.
Edit: On second thought...Since the oil galley remains constant you would see higher pressure since there would be more volume in the same container.
Edit: On second thought...Since the oil galley remains constant you would see higher pressure since there would be more volume in the same container.
Last edited by technical; 03-21-2005 at 02:51 PM.
03-21-2005, 01:33 PM
#7
Originally Posted by c5jim
Has anyone noticed an increase in the idle oil pressure after changing to a ported pump ? If so how much of an increase.
Thanks, JIM
Thanks, JIM
5-10lbs........a ported pump can flow more oil than a non ported pump........
(old engine)....stock LS6 pump gave 60psi max.....nothing changed but to a home (I did it) ported LS6 pump the max came up to 70psi max........no shim, just more volume......
the bypass can only bypass "X" amount of oil..........
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03-21-2005, 06:48 PM
#8
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The information that I am looking for is from people that have made the change from a stock pump to a ported pump or shimmed. I like to base my info on facts from people that have made the change. It is nice to guess or think in theory but I am looking for hard facts. I just want to do it right the first time.
Thanks for the info so for.
JIM
Thanks for the info so for.
JIM
03-22-2005, 11:41 AM
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When I did my h/c swap, I put in a ported pump. I lost 5 to 7 psi across the board. I talked to a local tuner that was dynotuning it for me and they said you needed to shim them to get more pressure. I pulled the pump, shimmed it, and gained 7 to 10 psi over the original non-ported version.
03-22-2005, 02:24 PM
#13
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Thanks to all that replyed. I received my new pump yesterday and I have just finished porting it. While I was at it I placed a .105 thou. shim that I made out of S/S washers under the spring. It will be installed on Wed. if I get my lazy *** under the car. Will report the results.
JIM
JIM