Fuel System Question

[Mark-32]

Just got a quick question regarding in-tank pumps and external pumps.

Im in the process of fitting a decent fuel system into my gtst.

I currently have a single 044 in tank pump but iam going to fit a surge tank and 2x external 044's to feed my RB26.

Just wondering if my current 044 in tank pump will be ok to leave there to use as the lift pump for the surge tank?

I realise that its probably overkill as a lift pump but it would seem like the simple option to just leave it in there and buy another 2 044's to mount externaly. And surely it would'n be working hard at all as a lift pump?

Any advise is much appreciated.

[rob82]

2x 044 is alot of horsepower. Thats enough fuel flow for around 1100hp. A single 044 as a lift pump will flow around 7L/min. More is not allways better.

[Mark-32]

Yeah but Iam aiming for 400rwkw plus. I currently have 320kw but will soon be winding the boost up from 14psi to 20ish. My tuner recommended the two external 044's and said one would do but get a second for peice of mind in case one fails.

Also can anyone tell me if the standard fuel lines from the tank to the rail will suffice?

[O2 Autosports]

an 044 will be fine for a lift pump.

[rob82]

Yeah but Iam aiming for 400rwkw plus. I currently have 320kw but will soon be winding the boost up from 14psi to 20ish. My tuner recommended the two external 044's and said one would do but get a second for peice of mind in case one fails.

Also can anyone tell me if the standard fuel lines from the tank to the rail will suffice?

The std line will choke up 2 044's but it will flow enough for that horsepower level. I would definately switch the second pump on at high boost/rpm. Dont forget to put a one way valve in front each pump - even if you dont switch the second pump.

[Dr DRFT]

The std line will choke up 2 044's but it will flow enough for that horsepower level. I would definately switch the second pump on at high boost/rpm. Dont forget to put a one way valve in front each pump - even if you dont switch the second pump.

He is right the line will choke up and must get the one way valves.

But for the amount of power your after two 044 is over kill. Even if your tuner says its for saftey, that really aint gonna work cause if both are turned on than it will be tuned for both so if one stops working it will suffer from starvation anyway. Plus with one it will be neater and cheaper. I also bought two cause thought that is what was needed but I had 576kw@wheels and only ever had one turned on and found that they actually flowed alot better as a single. Whereas with two you also have resistance problems....Best to fit one and get it tuned and if for some reason it is not evough than fit a second(which I doubt youll need).

Dr DRFT

[JonnoHR31]

if you havent bought the pumps already use the one you have intank as the external and buy a proper lift pump. be cheaper and work much better

[180or200]

I left my 044 as a lift, wanted to be sure it flowed plenty and was reliable, I'm running e85 and fitted another 2 044's feeding both factory lines and a bigger return! making around 400-430 rwkw

[Mark-32]

if you havent bought the pumps already use the one you have intank as the external and buy a proper lift pump. be cheaper and work much better

Thanks dude.

Ok so it sounds like this is going to be the best bet for my needs.

Can anyone give me an idea of what sort of lift pump I should use and the rough difference in price compared to the 044.?

I ask this question because if there is not a major difference in price I will just leave the current intank pump where it is to save the stuffing around of removing it and so on.

Thanks for averyones help, Much appreciated.

"Dr Drift" that info is exactly what i was after as the setup would be alot cheaper and neater with the single external setup. If your having no dramas with 570+kw im sure mine will be fine also.

Also can anyone shed some light as to what size surge tank I should be looking at, and is there any specific sized rubber fuel line and fittings I should be using to plumb the external pump to the surge tank and return etc?

[N1GTR]

Fuel setups has all been covered in detail before. Have a search through the forums, the motorsport section had a good thread last year.

I had an 044 intank and that was fine, then upped power and put a surge tank in. For me at least it wasn't worth swapping the 044 already intank for an 040, 023 or a stock pump. Hope that helps!

[Mark-32]

Fuel setups has all been covered in detail before. Have a search through the forums, the motorsport section had a good thread last year.

I had an 044 intank and that was fine, then upped power and put a surge tank in. For me at least it wasn't worth swapping the 044 already intank for an 040, 023 or a stock pump. Hope that helps!

Yeah cheers mate. So when you fitted the surge tank you just got another 044 as external?

[N1GTR]

2 more external, so 3 in total.

Some people dont like the sound, I love it haha

[O2 Autosports]

from what I've heard, one 044 is only good for 350-400rwkw. can't talk from experience though.

[Luke_ENR34]

Im going 2x Bosch 070's as a lift pump, to feed the 4L swirl pot then 2x 044's to the rail.

[JonnoHR31]

2 lift pumps? how much time do you plan on spending at WOT?

[GTScotT]

2 lift pumps? how much time do you plan on spending at WOT?

Most.

on a serious note, did i read correctly an 044 does 7L/Min? Meaning 420L/hr?

[JonnoHR31]

200lph @ 5bar @ 12v

[GTScotT]

Correct, thank you.

Didnt want to see more gospel, bosch site lists 200.

[Luke_ENR34]

I'm going e85 tho and rather be safe then sorry. Was more of a safety thing if one fails, and for $170 for a lift pump I might aswel.

What is "Wot"?

[GTScotT]

wide open throttle =WOT