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Fuel Pump Questions. Aeromotive A1000 & Bosch 044 Related

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project_tsi

Honorary DSM Wiseman
DSM Wiseman
2,699
118
Sep 4, 2004
Eau Claire, Michigan
Hey guys I've got some questions about which fuel pump I should be switching too, etc.

Currently, the car has a walbro 255 hp with -6an full feed line, 950's, Aeromotive FPR, etc. The turbo is a PTE GT3561SP on a 2.3L.

Originally, I had planned on simply adding in the Bosch 044 Fuel pump to run inline with the Walbro feeding it. I can get the Bosch 044 for $205. Easily be enough pump for my setup I know.

However, I just found out today that I can pick up a Aeromotive A1000 fuel pump for $240, and just get some adapters to bring it down to -6.

Would I be dumb not to go with the A1000? Aeromotive also sells some sort of pump controller designed to reduce heating of the fuel for long trips, does this have any credit? Does the pump flow so much that it super heats the fuel or something if daily driven on long trips? It is absouletly needed? If so, I'm not going to buy it and I'll just go 044 b/c the controller costs almost as much as the pump.

If I were to run the A1000, I assume I could completely eliminate the intank walbro correct? If so, do I just secure a hose down in the tank in place of the intank pump or no?

Would my current regulator and other fuel setup be good for this?

I want to do this right but I am not full sure of where to start exactly.

Any help is greatly appreciated.
 
Well... There are several routes you could go.

I don't know much if anything about the A1000 other than it's a bad mamma-jamma...

I currently run a Bosch in-tank and it's a great pump, supposed to support 600+ and you don't need anything to "prime" or feed it at all! You can run it in-tank, external, it doesn't need any primer pump or anything. Really versatile as far as how you want to mount it etc. I actually have my list of parts for the earls -8 fittings from summit around somewhere that has everything you need to put it in the stock fuel sending unit. The AN fittings alone are about 70ish shipped though.

If you already have a Walbro 255lph installed you can/should also look in to possibly just slipping a Walbro 392 in-line pump. Supposed to be good to about 700hp when used with the 255 and really easy to integrate.

Also whatever pump combo you decide on, I'd say just bite the bullet and go for -8 and call it a day but you've already run -6 all the way up front huh? It's a tough call but with the 044 or larger you're really going to want that volume man and in the long run I'd say you should just step it up to -8. Depends what you want to get out of the setup and I know people will tell me that others have made 5xx or maybe low 6's on stock lines but upgrading never hurts.
 
Cory thanks for the good info. I've also got this posted over on the link forums and a lot of guys are saying that the A1000 is not its all cracked up to be. And that the Bosch 044 actually flows more at high pressure than the A1000.

This combo is good for a bit over 600whp, and -6an lines can easily handle that. If I ever decide to go larger again on a turbo (doubtful) then I will pump up to a -8an feed line and use the -6 as a return.

So I'll probably end up just using the Bosch 044 inline with the Walbro 255 feeding it.
 
Well... There are several routes you could go.

I don't know much if anything about the A1000 other than it's a bad mamma-jamma...

I currently run a Bosch in-tank and it's a great pump, supposed to support 600+ and you don't need anything to "prime" or feed it at all! You can run it in-tank, external, it doesn't need any primer pump or anything. Really versatile as far as how you want to mount it etc. I actually have my list of parts for the earls -8 fittings from summit around somewhere that has everything you need to put it in the stock fuel sending unit. The AN fittings alone are about 70ish shipped though.

If you already have a Walbro 255lph installed you can/should also look in to possibly just slipping a Walbro 392 in-line pump. Supposed to be good to about 700hp when used with the 255 and really easy to integrate.

Also whatever pump combo you decide on, I'd say just bite the bullet and go for -8 and call it a day but you've already run -6 all the way up front huh? It's a tough call but with the 044 or larger you're really going to want that volume man and in the long run I'd say you should just step it up to -8. Depends what you want to get out of the setup and I know people will tell me that others have made 5xx or maybe low 6's on stock lines but upgrading never hurts.

Any more info on the 392? I did a google search but it just popped up a bunch of diesel performance stores.
 
Dan,

As we discussed the other night, I like your idea of using the 255 in tank and the 044 in line and downstream. Using the smaller pump to feed should ensure that you've got more than enough to the rail considering that the 044 seems to like another pump feeding it to boost the output.

I'd stick with plan A.
 
Wishihadatalon - PM Sent

Using the smaller pump to feed should ensure that you've got more than enough to the rail considering that the 044 seems to like another pump feeding it to boost the output.

Using them in series couldn't hurt I suppose, but believe me when I say that the 044 in no way needs the Walbro's support. For that matter if you're going to use pumps in series you may as well go with the 392 since it's much cheaper than adding an 044 inline and supports up to if not past 700whp when used in conjunction with the Walbro!
 
Using them in series couldn't hurt I suppose, but believe me when I say that the 044 in no way needs the Walbro's support. For that matter if you're going to use pumps in series you may as well go with the 392 since it's much cheaper than adding an 044 inline and supports up to if not past 700whp when used in conjunction with the Walbro!

I know Dan spoke to Bosch tech support and they liked the idea of running the 044 in series while maintaining the 255 as an in-tank to boost flow but I'm sure either that or your method would work fine for his needs. I'm sure Dan will catch this and consider the 392 as well.
 
Yes I have seen that writeup and its done very nice. However, I really don't want to hack up a stock pump hanger that much. I orderd the 044 through work the other day and it should arrive here monday or tuesday. I'll check it out and decide if I want to run it.

That 2nd link is very nice too.

I know the 044 alone will be plenty for my setup, but if running it in series with a smaller pump in tank will only boost its output even greater, then I say why not do it? Sure theres a greater chance that one pump could fail, but thats a slim chance IMO.
 
Bah, my works just as good. Besides, I'm not going to run it in the tank. Its going inline. Seriously this is going to be easier to run it inline with the wally than to replace it. Cut some hose, put on 2 fittings, mount the pump, run 2 wires, bam, done.
 
OK guys I know Im bringing up a year old thread, but I would really like some insight into an idea I was having. I know people are talking about using a 255 in-tank, and Bosch 044 in-line as a booster down the line. I was thinking of using the A1000 but I read about them heating fuel up during daily driving, and that the Bosch 044 out flows the A1000 at the high pressures that we see.

But I was wondering if using a Bosch 044 in-tank, and use the 255 in-line as a booster work be able to provide enough fuel? Im looking for in the mid 700 range, but I want to have A LOT of room with my fuel system.
In theory it would work, and provide enough fuel for close to the 1000hp level.

I was talking to twicks69, and he is running an inline 255, and an in tank 255 without incident. Also he made 740whp on the dyno. So with that said I would think the much larger 044 as an intank pump with a 255 inline would work out perfectly.

My only concern would be; will the 255 impead(sp?) flow of fuel? Or no?
 
To answer your question, no. A 255 will not hinder flow feeding a 044. Shit you could use a stock pump and it would still work the same.

I'm fairly certain a 255 feeding an 044 with -8 lines will support 700whp on gas. E85 no way.

However, if I were you, I'd pick up 2 044's and run them both in the tank teeing into a -8 Y block. That should then support probably 900-1000whp on gas.
 
OK thank you very much Dan for your reply, much appreciated.
I like on the East Coast, and we dont have E85 :)

I dont think that the twin intank 044's will be needed, but it is the next option if things go larger later on when the car will no longer see street time.
 
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