Going total white paper here.

Removing A1000 and replacing with in-tank twins. We've gone through 4 A1000 pumps and we're done with that product. The fuel tank is a "Rick's Custom Stainless" tank (not a corvette) and is designed for the A1000 so it has Earl's AN fittings. We're tossing the pump and we need to convert the AN fittings to rubber hose (adapters are available) connections. The problem is the pumps. I need an internal pump that is similar to an external pump that has hose connections on both input and output so I can use "Y" or "T" fittings to get both pumps hooked up. The input fittings are to get a hose down into the pickup area as the pumps themselves can't be inserted that deep into the pickup area due to space limitations.

So, anyone know of some Bosche or Walbro in-tank pumps that have hose barbs on both input and output? Pump must be at least 255LPH or bigger. BAP is involved to spin one, or both of them, faster if really needed. I think the both of them at 12 volts will have enough volume to hold the pressure at 74 PSI without employing the BAP. A rising rate fuel regulator is used to add 1 PSI of fuel pressure per 1 PSI of boost. Boost is looking to be 15 or 16 so 58 PSI + 16 = 74 PSI at full boost.

Can you use external pumps as internal pumps? That would be the easiest cure for the problem.

The car is tuning up to a 700 RWHP twin turboed 1998 Camaro.


Elmer

 

Call Andy at ADM performance. I think he's been working on a dual pump system for a 2010 camaro. His number is on his website:
www.admperformance.com

 

I will try your recommendation.

Thanks,

Elmer

 

I have feelers out with many people and I found this information:

New information confirmed.

External in-line Walbro will work in the tank. External Walbro has threaded input and output. Adapters available to hook the two pumps up to existing internal plumbing.

Pump controller not needed.
Installing additional bulk head connector for 2nd pump.
Hooking relay to hop switch to run 2nd pump at 12V during boost conditions.

The quest for knowledge never ends!


Elmer

 

If you are stuck on a in tank solution, I would look at the HOB Aeromotive, otherwise Dallas Performance has quite a few 1000+hp cars on their fuel system.

 

+1 for the Dallas Perf system. It uses a single magnafuel pump that can do 1800HP or about 1200 on E85. You can use it as a parallel and use a single 255 in the tank while part throttle. The external pump only turns on under boost and will therefore not be running allthe time to heat the fuel.

The issue with using the BAP is that you can only boost one of the two proposed units since the current draw will not be handled using a single BAP with 2 pumps that draw about 13-14 amps each.

The magnafuel pump is 529 from Jegs and has -8 in/out lines. If you use a hobbs switch to activate put two of them in parallel for a redundant safety in case one fails. On my fuel system, I also wired in an LED that is powered from the terminals of the pump. If the LED doesnt light during test runs you know it isnt working (or at least that there isnt voltage at the terminals of the pump). The best solution is to use the system as Dallas Perf sells it with their controller.

I have that LED on my gauge pod.

 

The MagnaFuel is extremely LOUD. I have one in a street/race car and it sounds like a Honda Civic motor.

 

I promise you that the only time I hear the fuel pump is when I click the starter with my foot off the clutch to prime the system. If you are making 800+HP, you will only hear exhaust after the engine starts and in my case the blower whine.

 

You have a couple other noises drowning out the pump. That doesnt make it a quite pump.
Your car sounds great! The reason you dont hear the pump is because you have an F1!!!!!!!!! You can hear the blower from a block away, so of course you dont hear the pump.
If you put that pump in a car TT car with a quite exhaust you can definatly hear it.
Of course the way DP has it running parallel, I'm sure its not bad because it only kicks on when the motor is under a heavy load.

 

A hobbs switch activates under boost at the pressure you set it at. If you have a 10lb boost, you set it for 7psi or so. To be at 7psi (other than twin screw or pos displacement s/c's) you have to be floored and at a high rpm. The pump isnt running under that boost and rpm so you cant hear it.

I dont care how loud any pump is, you are not going to hear it over the roar of a high HP engine. I have a magnafuel pump and I cant hear it over my Z06 exhaust when its closed when i floor the car. Your concern isnt warranted. You will never hear it.

Twin bosch 044's will support his power requirement without a BAP but its twice the current draw if he cares. His last option is to use a bosch 044 with an MSD voltage booster (kenne bell is an off-on switch and doesnt vary voltage with boost level).

 

Magnafuel pump here as well...boost activated and I can not hear even with the stock Ti exhaust!

 

Exhaust? What is that? The Camaro has two turbos in the flow to reduce noise. The rest is pipe. Nothing but pipe. When that car is at full boost I guarantee you could be running 20 pumps in the car and you wouldn't hear squat from them!

Elmer

 

FYI Kenne bell makes a BAP that is rated for 40 amps, and also makes a DUAL output BAP for dual pump set ups.