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External pump for "street car". Need help

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Old 02-05-2014, 08:07 PM
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Seen a add on the aeromotive Phantom pumps, are they any good?
Old 02-05-2014, 08:35 PM
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Originally Posted by a.white86
Any reason for the upgrade? Or just to support more power, period?
I decided to redo my sump to a single out, from a dual, do bigger feed & return lines, so went to the bigger pump. Going to be running it on E-85, I think the 1400 would have been "enough" but since I was redoing everything, I decided to go to the bigger pump.


Originally Posted by dmaxvaz
you have dyno sheets to prove the 1000-1100 on e85? just curious, because i have this pump, and i was going to go to biggger injectors and dont want to run out of pump. i have the holley 12-1800, FIC 1000s, -10 feed, -8 return. made 801 rwhp with this setup
8 second cars have them.
Old 02-06-2014, 03:34 PM
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Originally Posted by Unstang
I decided to redo my sump to a single out, from a dual, do bigger feed & return lines, so went to the bigger pump. Going to be running it on E-85, I think the 1400 would have been "enough" but since I was redoing everything, I decided to go to the bigger pump.




8 second cars have them.
Ok quick question,, what does "dual out" mean? Does that mean there's another bung on the opposite side of the tank so that it supplies fuel under heavy breaking or cornering or something?
Old 02-07-2014, 01:26 PM
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Another positive for the 4303 and Nasty tank. I drive it everyday and have driven it to the track and back without any issues. I haven't driven very far, so unfortunately I can't give you those details.
Old 02-07-2014, 08:22 PM
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Originally Posted by a.white86
Ok quick question,, what does "dual out" mean? Does that mean there's another bung on the opposite side of the tank so that it supplies fuel under heavy breaking or cornering or something?

I had 2 side by side -6 bungs, redid it to a single -12.
Old 02-07-2014, 08:50 PM
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Originally Posted by Unstang
I decided to redo my sump to a single out, from a dual, do bigger feed & return lines, so went to the bigger pump. Going to be running it on E-85, I think the 1400 would have been "enough" but since I was redoing everything, I decided to go to the bigger pump.




8 second cars have them.
i understand 8 sec cars have them, but, a 2500 lb car can run 8s with less than 1000-1100rwhp. i asked for 1000-1100 hp on e85 proof. not trying to be a dick, just people have a tendency to quote other people, or theorize that it will be enough pump. the only thing i read about the pumps is that they look like 2 walbro 255s inside a billet housing.
Old 02-07-2014, 09:47 PM
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GRAY86HATCH has one, his car is 3000#, goes low 9s @ 143.

TurboBu-Crusty Nova… "158mph @ 3550# on 21# boost EFI E85 car has been 8.57@159 30 times and no matter what we've tried wont run 160. Run it through several calculators you'll come up with 1050-1100 Hp at flywheel. Much quieter than a1000 or Magnafuel. I've ran it dry twice causing 0 damage. Adding a second because I just can't see spending the money and the trouble to switch to a mechanical."
Old 02-07-2014, 10:19 PM
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I've been 9.0 at 147 at around 3100#s crusty nova was the one I was referring too that's around 1000hp
Old 02-08-2014, 09:20 AM
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I have a 4303 on e85, drive it to work 120mi round trip, I'm around 800whp though. Its quieter than an a1000 I previously had.
Old 02-08-2014, 10:05 AM
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Originally Posted by Unstang
GRAY86HATCH has one, his car is 3000#, goes low 9s @ 143.

TurboBu-Crusty Nova… "158mph @ 3550# on 21# boost EFI E85 car has been 8.57@159 30 times and no matter what we've tried wont run 160. Run it through several calculators you'll come up with 1050-1100 Hp at flywheel. Much quieter than a1000 or Magnafuel. I've ran it dry twice causing 0 damage. Adding a second because I just can't see spending the money and the trouble to switch to a mechanical."
so, 850-900 RWHP is probably max then.

Last edited by dmaxvaz; 02-08-2014 at 11:38 AM.
Old 02-08-2014, 11:20 AM
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Originally Posted by turboventura
I have a 4303 on e85, drive it to work 120mi round trip, I'm around 800whp though. Its quieter than an a1000 I previously had.
Man my 4303 is a loud bastard! Maybe mine needs a rebuild or something. I bought it used and I've run it for 4 years now without an issue. Many 2-3 hour cruises. (90-100* heat) Always drive to and from track. No voltage controller or anything. 1/2" feed and return.

I have 4 very soft isolators bolted to the aft side of the rear bumper. Isolators cut down about 50% of the noise, but it's still VERY noticeable. Even with an open 4" downpipe. I even unbolted the motor and let it hang by the SS lines. Still obnoxious.
Old 02-08-2014, 12:42 PM
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Originally Posted by dmaxvaz
so, 850-900 RWHP is probably max then.
Not wanting to argue, but I would think that the Crusty Nova makes more than 900 rwhp. I haven't heard of two 255s on e85 taking a 3500# car deep in to the 8s.

It is likely maxed out at the HP it takes to go 160 in a 3500# car, but that car has also been driven all over the place, so it seems to be a very reliable pump.
Old 02-08-2014, 12:58 PM
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Independent flow tests put the 4303 ahead of the holley by a decent .margin
Old 02-08-2014, 01:43 PM
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Originally Posted by Unstang
Not wanting to argue, but I would think that the Crusty Nova makes more than 900 rwhp. I haven't heard of two 255s on e85 taking a 3500# car deep in to the 8s.

It is likely maxed out at the HP it takes to go 160 in a 3500# car, but that car has also been driven all over the place, so it seems to be a very reliable pump.
i am just trying to get FACT, because i do have this pump, and i need to propel a 5000lb vehicle to low 10s/high 9s and i will need 1000+hp to get there.
Old 02-08-2014, 02:05 PM
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Originally Posted by rotary1307cc
Independent flow tests put the 4303 ahead of the holley by a decent .margin
i believe it. i chose the holley because it was alot quieter. wish i would have just got the 4303, and would have been done with it.



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