Aeromotive Pump fell apart; help needed.... - Lateral-g Forums

70TWO NOVA · #1 01-06-2013, 12:08 AM

I have an Aeromotive Stealth 340 fuel pump. When I was mocking it up the silver ring popped off the outlet an a couple parts fell out. There is a little copper "plunger" and a white plastic sleeve that came out. Unfortunately Im not sure how they go back in. From what I cant tell the copper plunger thing fits into the white sleeve, but I dont know which way it goes. Any info on how this goes back together would be greatly appreciated.

Pics;

70TWO NOVA · #2 01-06-2013, 01:05 AM

I guess Ill have to give them a call

SuperB70 · #3 01-06-2013, 03:20 AM

Looks like the one way valve came out. I recall there should also be a spring, but it's not used on every pump model. When pump is shoted down, the pressurated fuel presses the plunger against the pump frame closing way the pressure going true the pump back to tank.

You can run with out it but it maid be little harder(longer) to start up cos you dont have already pressurased fuel in fuelrails. Or you can run pre-pressurising relay/ or if running aftermarket injection, you can chance setting from ecu to run your fuel pump.

Most european/japanish cars have that kind of relay, when you turn ignition on, you can heard your fuelpump running acouple seconds.

1969x11 · #4 01-06-2013, 09:24 AM

Aeromotive 340's arent known for longevity in street use,I wouldnt take a chance on it. Send it back and get a Walbro.

70TWO NOVA · #5 01-06-2013, 02:59 PM

Quote:

Originally Posted by SuperB70

Looks like the one way valve came out. I recall there should also be a spring, but it's not used on every pump model. When pump is shoted down, the pressurated fuel presses the plunger against the pump frame closing way the pressure going true the pump back to tank.

You can run with out it but it maid be little harder(longer) to start up cos you dont have already pressurased fuel in fuelrails. Or you can run pre-pressurising relay/ or if running aftermarket injection, you can chance setting from ecu to run your fuel pump.

Most european/japanish cars have that kind of relay, when you turn ignition on, you can heard your fuelpump running acouple seconds.

do you know what order these parts go back in by chance?

70TWO NOVA · #6 01-06-2013, 03:00 PM

Quote:

Originally Posted by 1969x11

Aeromotive 340's arent known for longevity in street use,I wouldnt take a chance on it. Send it back and get a Walbro.

which walbro do you recommend?

**GregWeld** · #7 01-06-2013, 03:03 PM

THAT would depend on what you're running. A simple LS3 or a turbo'd 1000hp big block...

If the pump you're showing is adequate --- then probably the WALBRO 255 which is rated to 500hp... for EFI which I'm assuming you're running, NOT a carb.

70TWO NOVA · #8 01-06-2013, 03:07 PM

Quote:

Originally Posted by GregWeld

THAT would depend on what you're running. A simple LS3 or a turbo'd 1000hp big block...

If the pump you're showing is adequate --- then probably the WALBRO 255 which is rated to 500hp... for EFI which I'm assuming you're running, NOT a carb.

Lol sorry, Iam running an LQ4 with LS6 top end and a little more compression (factory injection setup). Probably no more than 350-400 horse, although a supercharger is in its future.

70TWO NOVA · #9 01-06-2013, 03:09 PM

Isnt the stealth pump I have essentially the same thing as the walbro? What makes them inferior? Just trying to understand.

1969x11 · #10 01-06-2013, 03:39 PM

Quote:

Originally Posted by 70TWO NOVA

which walbro do you recommend?

Walbro 255. Do a search on Ls1 tech. I have no experience with the 340 but I have used the walbro in about 6 different builds and never replaced one. Plus they are 100 bucks.