1/2 Ton 24v Swap/build
- Thread starter F8L GTO
- Start date
I have a few questions about fuel pressure/regulation after doing some reading. Researching the topic has actually brought me more questions instead of answers.
Right now, AirDog is feeding (dual feed) the p7100. The "return line" out of the airdog goes back into the tank. The return out of the p7100 T's with the line out of the back of the cylinder head, then back to the tank.
I had thought about using an Aeromotive pressure referenced regulator like I normally do with my charged gas stuff. Would it be best to run the regulator between the airdog and the p7100 or in the return line after the pump? I was planning to run on the return side thinking it would better regulate the pump supply. What should the idle pressure be and how much drop in psi under boost is acceptable?
Also any comments on lubricating fuel additives?
Right now, AirDog is feeding (dual feed) the p7100. The "return line" out of the airdog goes back into the tank. The return out of the p7100 T's with the line out of the back of the cylinder head, then back to the tank.
I had thought about using an Aeromotive pressure referenced regulator like I normally do with my charged gas stuff. Would it be best to run the regulator between the airdog and the p7100 or in the return line after the pump? I was planning to run on the return side thinking it would better regulate the pump supply. What should the idle pressure be and how much drop in psi under boost is acceptable?
Also any comments on lubricating fuel additives?
Last edited:
92dak_r6
New member
- Joined
- May 15, 2010
- Messages
- 382
The ones I've done. I Removed the ofv valve and put the regulator in the return line. I dont use the any pressure for added psi.
I've heard alot of ppl say different pumps like different PSI. My Dakota has a 175 pump it's set at 76 PSI. My brothers race truck(180 pump with a Darren Cam) is set to 60 PSI.
My dads pulling truck is a 160 pump set to 55-60 PSI( all the pressure the Fass wants to put out). They all stay with 5 PSI of their starting pressure.
Thanks. It looks like it has some sort of ball/spring regulator in the return line now. Im going to get it running, monitor the psi and see if I need to change anything. Waiting on a few things to come in the mail this week. Should be able to start it this weekend.
Dazed&Confused
Surfing my own world
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- Jun 27, 2006
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- 2,533
Why doesn't your cluster work?
Its a gas cluster. I was referring to the oil press, coolant temp, and tach mainly. The voltage and fuel level will still function. I will have to figure out the speedo though. Mechanical guages are usually more accurate than the factory cluster anyways.
Ghostman
24v crazy
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- Aug 24, 2012
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- 2,819
Good to know. Thanks.
Kick Start
Banned
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- Feb 25, 2009
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- 3,173
It should just plug up anyway, shouldn't it? Is there a difference from 94-02 in Guage cluster?
jlbayes
New member
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- Mar 15, 2011
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98-02 have a different cluster and dash. now, i am not sure if the connections are different that the cluster plugs into.
If Im not mistaken, the gas engine harness connectors (3 square-ish plugs by the drivers side fender) are spliced into the body harness of the truck. I would be very surprised if the pins were the same on the plugs but I guess Dodge may have done that. The motor came out of a 99 model truck with a hacked up harness so I have nothing to compare the gas harness to.
Is that Bama Parts? I will check them out, thanks!
All the fittings and hose are Earls brand. I used 7/16-24 inverted flare female to -4 AN male and converted the booster (m12 flare and m10 flare) to -4AN as well which came from AN fittings direct I think. The brake lines take some time to assemble to be sure they are seated properly but the turnout is nice. I may run another 90 out of the prop valve to make it look more symmetrical.