pressure regulator??

dsl kicks gas

dsl kicks gas

Runnin on Broke
Joined
Aug 13, 2007
Messages
546
ive been reading about using a pressure regulator on the return line on a p-pump. the pressure relife valve is bad(running 6-7psi at a idle, pinch the return hose and it will run up to 30 or so) on mine and i didnt know if there is a better way to go than a stock replacement
 
where does it hook up? at the outlet of the pump, or in the return line?????


how much pressure should you regulate it at
 
why do you want a check valve on the return side of the injector pump. Just take the overflow valve out and take it apart and stretch the spring for more fuel pressure. If you take it apart and the spring is broken... replace it.

Keep in mind stretching the spring WILL NOT give you any more fuel flow... just pressure.

But... it does help to a certain point.

Lance
 
Might be kinda hard to see in the pic but I used an aeromotive regulator. I also used a A1000 pump.
IMG_0077.jpg
 
im not sure how its set up, look like its a 2 peice deal, im asuming there is aspring and a ball under the cap.

what would be the best bet, replace the spring(what spring would be a problem) or with a regulator
 
what kinda fiting did you use in the pump? and what kind of line did you use from the pump to the regulator?
 
I am just running a cheap regulator that I got off of ebay for about $35. It is adjustable from 0-100 psi. I have been running it for 2 years with no problems. I just took my stock overflow valve apart and took the ball and spring out of it, then spliced the regulator into the return line shortly after the pump.
 
i dont know how the stock set up is, but im using 5/16 60psi rubber fuel back to the draw straw(vulcan) i have a holley regulator that came with a blue pump i used on my 24v,,,,,,im asuming that would work i would be worried about where the hose clamps on the steel line at the pump leaking.


what psi are you running at yours at?
 
teddybear said:
I am just running a cheap regulator that I got off of ebay for about $35. It is adjustable from 0-100 psi. I have been running it for 2 years with no problems. I just took my stock overflow valve apart and took the ball and spring out of it, then spliced the regulator into the return line shortly after the pump.
Click to expand...

why didnt i think of that?

why put a bybass reg before the ip when you can flow the fuel right thru it?

excellent idea if you are trying to save a buck

don

*wait a minute....isnt there a pump at the ip inlet? cant flow excessive volume thru that
 
but why would you want to spend money on a regulator with the stock cam driven lift pump?
Stretching the overflow valve spring will bring fuel pressure up to about 55psi or so.

But like i said.... it WILL NOT add more flow.

Depends on what you have for fueling and what you PLAN on having.

Lance
 
dsl kicks gas said:
i dont know how the stock set up is, but im using 5/16 60psi rubber fuel back to the draw straw(vulcan) i have a holley regulator that came with a blue pump i used on my 24v,,,,,,im asuming that would work i would be worried about where the hose clamps on the steel line at the pump leaking.


what psi are you running at yours at?
Click to expand...

Mine is set at around 45psi.
 
dsl kicks gas said:
what kinda fiting did you use in the pump? and what kind of line did you use from the pump to the regulator?
Click to expand...

Just a AN banjo and reused a gutted stock regulator bolt. Ive seen some that they used the stock return line and cut it then slid the hose over the end.
 
:hehe:
oldsmokey97 said:
but why would you want to spend money on a regulator with the stock cam driven lift pump?
Stretching the overflow valve spring will bring fuel pressure up to about 55psi or so.

But like i said.... it WILL NOT add more flow.

Depends on what you have for fueling and what you PLAN on having.

Lance
Click to expand...

entriely to much fuel for the stock pump the truck was a org a 24v, right now 435 injectors, 13mm p pump, 0 plate, .120 lines, 22* timing, s-465, ported polished, oring, head 14mm studds, cam, .020 over pistons...........i got laid off right about the time i was finishing up so a few things got put on the back burner, the lift pump being one of them.


and i like i said i already have a regulator, and plan on upgrading pumps in the near future, i dont want to spend the money on spring/valve if i dont have to
 
dsl kicks gas said:
:hehe:

entriely to much fuel for the stock pump the truck was a org a 24v, right now 435 injectors, 13mm p pump, 0 plate, .120 lines, 22* timing, s-465, ported polished, oring, head 14mm studds, cam, .020 over pistons...........i got laid off right about the time i was finishing up so a few things got put on the back burner, the lift pump being one of them.


and i like i said i already have a regulator, and plan on upgrading pumps in the near future, i dont want to spend the money on spring/valve if i dont have to
Click to expand...


Ok well..... putting a FEW specs on your sig works wonders.

That is why you sig is there is to post what you have to keep this sorta confusion down.

not EVERYONE knows what you have and letting people know is a main step in getting the advice that will valuable to you..

Lance
 
oldsmokey97 said:
Ok well..... putting a FEW specs on your sig works wonders.

That is why you sig is there is to post what you have to keep this sorta confusion down.

not EVERYONE knows what you have and letting people know is a main step in getting the advice that will valuable to you..

Lance
Click to expand...

thanks for the advice:poke:

i got a new spring today, had to modify it a little and it runs 25psi at idle and 45ish at wot

thanks for the help. a lift pump is in my near future
 
2 hose clamps on my return worked fine. Just slowly tighten them down and watch your idle fuel pressure. Mine is at 50psi then under full load it drops to 7psi as I thought it would...lol Still waiting on the 450gph mech. lift pump that replaces the stock one.
 
Timebomb said:
2 hose clamps on my return worked fine. Just slowly tighten them down and watch your idle fuel pressure. Mine is at 50psi then under full load it drops to 7psi as I thought it would...lol Still waiting on the 450gph mech. lift pump that replaces the stock one.
Click to expand...

LOL Nice. I can always appreciate some redneck enginuity. I hereby deem this "the timebomb method":hehe:
 
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