Fuel needs

[Ironmike]

I need a reccomendation for a mechanical fuel pump. My Eddy flows enough, but pressure on the dyno drops to just over 4psi after 4500RPM. I know there's a Carter, but can't seem to find the one that DOESN'T need a regulator.

Any thoughts?

 

[MOPARMITCH]

Fuel !! I need Fuel !! !! Please tell us what you are working on!!

 

[63dartman]

When you say on the Dyno, is the engine on a stand or in the car? That could rule out a lot of issues.

 

[AJ/FormS]

If it doesnt go lean,How is it an issue? You didnt say it went lean. As long as its putting out the volume, 4psi shouldnt be an issue. Do a volume test and make sure it delivers enough fuel for your horsepower level. If its good; fugetabowdit.
Oops, for a streeter, fugetabowdit. Youre almost never at WOT for more than a few seconds at a time.

 

[cannucky]

the Holley doesn't need a regulator but I don't know about the pressure drop off thing , I'll have to go out tomorrow and run her up to 4500 to see if it drops or not .

 

[Ironmike]

On an engine dyno. And, no. It's not going lean, but Holley tells me I'm leaving power on the table if I'm under 6PSI. I've seen a Valiant pick up 3 tenths after the dude adjusted his regulator. Granted, was running a Dominator, but still.....3 tenths from 4PSI to 7.

I think I found the Carter pump. One was discontinued and another part number took it's place.

 

[cannucky]

My internally regulated Carter pump decided to stop regulating and started putting out 12 PSI so you might want to check it from time to time , mine was only 3 years old or so before it started acting up . I just installed the Holley last week because I hate seeing that regulator under the hood . It's pouring here today so I didn't get a chance to any testing at high revs , maybe tomorrow when the sun comes back out .