Any increase in idle pressure after pump change ?
Thread Starter
Staging Lane
Joined: Nov 2002
Posts: 60
Likes: 0
From: Salisbury, Md.
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
Originally Posted by technical
Theoretically, if you increase volume (porting) then you will reduce pressure.
TECH Addict
Joined: Mar 2004
Posts: 2,336
Likes: 0
From: Fat Chance Hotel
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; Mar 21, 2005 at 02:51 PM.
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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Thread Starter
Staging Lane
Joined: Nov 2002
Posts: 60
Likes: 0
From: Salisbury, Md.
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
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Teching In
Joined: Aug 2003
Posts: 15
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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.
Thread Starter
Staging Lane
Joined: Nov 2002
Posts: 60
Likes: 0
From: Salisbury, Md.
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