What Fuel Pump To Lift Fuel From Main Tank To Surge Tank?

[B1ack_Mi16 67]

I've just ordered myself a Bosch 044 pump to use between the surge tank and the rail.

 

However I need another pump to transport fuel from the tank and to the surge tank. This will be an external pump hanging under the car in the standard position (it is a 405 T16).

 

Do you have any experience of this type of pumps? I guess I just could buy asnother 044 pump, but think that is a bit overkill, and maybe it exists some cheaper alternatives that is more suited for the job.

 

Thanks in advance

[rallyeash 155]

cant you run the standard pump from the tank to the swirl pot?

[B1ack_Mi16 67]

Probably, but that one is long gone

[rallyeash 155]

surely easiest and cheapest way would be to fit another one then or a normal 405 one if there the same dimensions?

[welshpug 1,661]

405 runs an external fuel pump as std, they're pretty easy to get hold of as many other vehicles used similar or the same units, fitted a pump to a HDI engined Suzuki Vitara a few months back and the pump was a bosch unit much the same as a 405 one!

 

The standard one will do the job nicely I would have thought.

[B1ack_Mi16 67]

Ok, maybe just browse eBay and look for a std one then. I thought maybe a high volume low pressure pump could be used, not that I really know if that anything is called that. But I agree that a std pump will flow quite good without any back-pressure.

[rallyeash 155]

i just run the standard 205 gti fuel pump from the tank into the swirl pot then bosch 044 pump upto the engine

[Baz 421]

Pretty sure they're the same as the ford ones i'm used to, if not then as WP says above, i bet they're a generic one.

 

If you're looking for an uprated one though Kristian; a Walbro of some sort?

Edited November 29, 2011 by Baz

[B1ack_Mi16 67]

I have no idea really, just need one that will lift enough fuel to provide for 500bhp. Which I guess is not a problem possibly even with a std. pump.

Maybe just browse eBay after some random 90's cars fuel pump to find the cheapest one avaliable

 

It's a bit important that it doesn't make much noise though (I wan't my T16 to be silent under normal driving), are walbros ok in that aspect?

[petert 588]

The problem here is that external mounted pump as you suggested isn't designed to lift fuel, ie out of the tank. They don't suck very well. You really need to put something in the tank, to PUSH the fuel up to the surge tank. Maybe 070? Another 044? Certainly has to be something capable of keeping up with the main pump.

 

edit: Just realised 070 is quite a bit smaller than 044! See specs attached.

fuelpumps.pdf

Edited November 30, 2011 by petert

[stu8v 68 1 Cars]

I have no idea really, just need one that will lift enough fuel to provide for 500bhp. Which I guess is not a problem possibly even with a std. pump.

Maybe just browse eBay after some random 90's cars fuel pump to find the cheapest one avaliable

 

It's a bit important that it doesn't make much noise though (I wan't my T16 to be silent under normal driving), are walbros ok in that aspect?

 

 

Not a hope they will be quiet, It will be buzzing away like a wasps nest....!

[allanallen 528 2 Cars]

Not a hope they will be quiet, It will be buzzing away like a wasps nest....!

 

Agreed, my external walbro is pretty noisy. Although it is under the rear seat well and there's no interior etc to deaden the sound.

[Liquid_106 97 1 Cars]

Have you thought about using one of these http://bit.ly/telliq. Friend used one on his swirl-pot set up and never had any issues. As previously mentioned, they're not silent - not a red-top, but a failry accurate representation of the noise / volume a fact pump produces:

http://www.youtube.com/watch?v=ECfzMU3Catc

[brumster 135 1 Cars]

If you're going to use a high flow/high pressure pump then just make sure the return off the swirl pot is plenty big enough to ensure the fuel doesn't start pressurising in the pot.

 

Personally, I use a facet solid-state like this type :-

http://www.fuelpumpsonline.co.uk/facet-solid-state-fuel-pump-40105-30-45psi-6-p.asp

 

...and it works fine situated just above the tank in a 205 (ie. it has some lifting to do, but not a great deal). If you're situation a pump at tank level or below, then it'll be absolutely fine. The reality is you don't need a massive amount of flow to keep the swirl pot topped up, but provided the return on it can flow enough back into the tank it doesn't really matter if you're pushing too much into it. However you don't want to get it pressurised as it can throw the fueling out on the rail (I am guessing it screws up the return feed from the regulator as it pressurises the wrong side of it?). Can't explain it but I've definately seen it happen on a fellow competitors car.

[B1ack_Mi16 67]

Lots of good comments here now.

 

Exactly what I am a bit afraid of if I put a 044 pump as lifting pump is that the whole system might get pressurized.

 

I guess I will just get a more or less standard Bosch pump to do the job. I think even a base model pump will be able to deliver enough fuel to the pot, as it probably flows quite a bit more than specified when it is working without any fuel pressure regulator?