View Poll Results: Which Pump
Barry Grant
13
6.67%
Magnaflow
32
16.41%
Aeromotive
98
50.26%
other
52
26.67%
Voters: 195. You may not vote on this poll
Which External Fuel Pump..please vote
Originally Posted by Blown408
I got to around 700rwhp with my Weldon and had to dump a lot of fuel with the injectors to get 750rwhp out of my setup. Now I am as far as I can go without adding another Weldon or buying another (larger)pump. I have a Procharged 408w/15psi.
It is a very quiet pump and I did not have to run any kind of voltage regulator. I hope this helps.
It is a very quiet pump and I did not have to run any kind of voltage regulator. I hope this helps.
If you are maxed at 15PSI /750RWHP, sounds like my decision is to use the weldon as an intermediate approach, or I need to go bigger from the get go. That is where the longevity question comes into play, no need to overkill then not utilize.
My thought is to replace my OEM (bucket pump) with a Walbro 255HP, this would suffice for city/non boosted usage. The additional pump would be energized by a pressure switch, to augment the OEM pump. I am assuming that instead of a continuous duty, this approach would increase the life of whatever pump I choose.
With a big budget do it right from the beginning and you will save money from a redo. An inline pump will not work with the factory bucket pump/siphon. It takes the pressure head off the siphon and the bucket doesn't fill up...no gas = boom.
Sump the factory tank (if possible) or buy a custom tank and have either preplumbed for two external 420 Bosch or similar Weldon pumps. -8an to each pump for individual feeds and y it to a single -8an main feed. Run one pump continuously and wire the other to a hoobs switch to keep your fuel cool while driving on the street. You'll have enough reliable supply for 1500 engine hp without overheating the fuel and pumps. I prefer the Bosch 420 as it is a high pressure (80psi ...no problem since you'll want to boost reference your regulator for max injector flow) and it is OEM quality with years of history.
Sump the factory tank (if possible) or buy a custom tank and have either preplumbed for two external 420 Bosch or similar Weldon pumps. -8an to each pump for individual feeds and y it to a single -8an main feed. Run one pump continuously and wire the other to a hoobs switch to keep your fuel cool while driving on the street. You'll have enough reliable supply for 1500 engine hp without overheating the fuel and pumps. I prefer the Bosch 420 as it is a high pressure (80psi ...no problem since you'll want to boost reference your regulator for max injector flow) and it is OEM quality with years of history.
Launching!
Joined: May 2005
Posts: 210
Likes: 0
Originally Posted by RAACCR
I voted for "Other". I've got a 14 year old Weldon in my Syclone (which is undergoing an LSx transplant) and it still works as good as the day I bought it. Never used a voltage regulator...99+% sreet driven. Never overheated...never quit running...never repaired/rebuilt...never one single problem. Unfortunately, I do have to replace this pump, because I need a larger pump. But, you can bet your a$$ I wouldn't even think about getting anything other than another Weldon. If you can find one single BG, Magnaflow or Aeromotive that's lasted over 14 years on the street, I'll be very surprised. (I've see countless stock pumps crap out earlier.)
PS weldon's main source of revenue is making fluid pumps for missile defense systems so cars are a walk in the park for them. think about it!
Not many people have magnafuels on this board. I will tell you this. I have the 4303 and it is alot quieter than I expect and holds my RWHP no problem. Which these pumps are rated at 2000 hp NA and 1500 FI. Fuel pressure is rock solid! Nate sells them at a dam good price too!
Last edited by JMBLOWNWS6; Jun 27, 2006 at 09:25 PM.
Originally Posted by onfire
With a big budget do it right from the beginning and you will save money from a redo. An inline pump will not work with the factory bucket pump/siphon. It takes the pressure head off the siphon and the bucket doesn't fill up...no gas = boom.
Sump the factory tank (if possible) or buy a custom tank and have either preplumbed for two external 420 Bosch or similar Weldon pumps. -8an to each pump for individual feeds and y it to a single -8an main feed. Run one pump continuously and wire the other to a hoobs switch to keep your fuel cool while driving on the street. You'll have enough reliable supply for 1500 engine hp without overheating the fuel and pumps. I prefer the Bosch 420 as it is a high pressure (80psi ...no problem since you'll want to boost reference your regulator for max injector flow) and it is OEM quality with years of history.
Sump the factory tank (if possible) or buy a custom tank and have either preplumbed for two external 420 Bosch or similar Weldon pumps. -8an to each pump for individual feeds and y it to a single -8an main feed. Run one pump continuously and wire the other to a hoobs switch to keep your fuel cool while driving on the street. You'll have enough reliable supply for 1500 engine hp without overheating the fuel and pumps. I prefer the Bosch 420 as it is a high pressure (80psi ...no problem since you'll want to boost reference your regulator for max injector flow) and it is OEM quality with years of history.
What is a hoobs switch? Also, is necesary to rfun two filters per pump (pre/post) or simply pre pump then into a y?
Originally Posted by obZidian
interesting, so you are suggesting that a set of 420 bosch or Weldon 600 would be enough to supply enough fuel for over 100rwhp.
What is a hoobs switch? Also, is necesary to rfun two filters per pump (pre/post) or simply pre pump then into a y?
What is a hoobs switch? Also, is necesary to rfun two filters per pump (pre/post) or simply pre pump then into a y?
Keep it simple stupid.
No the Pro series Aeromotive are not meant to be street driven. Use one MagnaFuel street pump they have them good all the way to 2000hp. And a Nasty sumped tank is a better way to go 
way less hassle than sumping a GM tank making sure it does not leak and having it coated so it does not rust...ARG
Nate
way less hassle than sumping a GM tank making sure it does not leak and having it coated so it does not rust...ARGNate
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
On The Tree
Joined: Apr 2004
Posts: 166
Likes: 0
From: Oslo, Norway, Europe
Hi, im trying to find out what pump i should buy, the only one i could find at summit that would fit my needs is this
http://store.summitracing.com/partde...2D2225&FROM=MG
im thinking of tuning the engine to 550 hp, would this pump be good enough for that? 60 psi is stock, is it possible if you choose say a 100psi pump, that the regulator are gonna struggle to keep the pressure down?
http://store.summitracing.com/partde...2D2225&FROM=MG
im thinking of tuning the engine to 550 hp, would this pump be good enough for that? 60 psi is stock, is it possible if you choose say a 100psi pump, that the regulator are gonna struggle to keep the pressure down?
I ran a Weldon 2025. I removed it. It was just too loud for me. I now run dual Bosch 420L external pumps and a sheetmetal gas tank. My only gripes with sheetmetal gas tanks is that mine (CAS) seems to not vent right so I have to put fuel in slowly, and I'm not sure how to make my fuel gauge accurate, maybe I need to bend the arm of the float or something. So if you buy a sheetmetal make sure the seller knows how it all works and has good directions.
Originally Posted by Pro Stock John
I ran a Weldon 2025. I removed it. It was just too loud for me. I now run dual Bosch 420L external pumps and a sheetmetal gas tank. My only gripes with sheetmetal gas tanks is that mine (CAS) seems to not vent right so I have to put fuel in slowly, and I'm not sure how to make my fuel gauge accurate, maybe I need to bend the arm of the float or something. So if you buy a sheetmetal make sure the seller knows how it all works and has good directions.
http://www.exoticperformanceplus.com....html?item=735
We have been using this Aeromotive pn# 11104 pump and pn#13101 regulator http://www.exoticperformanceplus.com....html?item=738 with good results. Bob
We have been using this Aeromotive pn# 11104 pump and pn#13101 regulator http://www.exoticperformanceplus.com....html?item=738 with good results. Bob
Originally Posted by Exotic Performance Plus
http://www.exoticperformanceplus.com....html?item=735
We have been using this Aeromotive pn# 11104 pump and pn#13101 regulator http://www.exoticperformanceplus.com....html?item=738 with good results. Bob
We have been using this Aeromotive pn# 11104 pump and pn#13101 regulator http://www.exoticperformanceplus.com....html?item=738 with good results. Bob
The pump is too far away from its pickup...
Ive seen this exact setup lock up after 45 minutes of driving on the highway. That pump should be gravity or sump fed. Not pull its own fuel and then push it as well. Builds heat!
If your installs are working im quite shocked. The Aeromotive site doesnt even have a diagram for that setup. Maybe you should submit yours to them.
Ive seen this exact setup lock up after 45 minutes of driving on the highway. That pump should be gravity or sump fed. Not pull its own fuel and then push it as well. Builds heat!
If your installs are working im quite shocked. The Aeromotive site doesnt even have a diagram for that setup. Maybe you should submit yours to them.
