Injection pump ??

[TuxMan]

Guys I need to upgrade my 044 Bosch injection pump to something bigger and I wondered what you guys are running in the LS engined cars , was thinking about the Prolab prodigy . Thanks for any help . Tux

[ROWDYRENAULT]

The bosch pump will support 600-700 hp do you really need more pump? Lee

[GTRCLIVE]

There is a point at about 600bhp on the 044 (and even the motor-sport version at about 650) where you have to make the decision to run a Pair of them or a Larger different pump unit. The 044's are cheap and easy to get hold of so you think running 2 of them would be a easy choice but, they take 15-20 amps each to run so that has to be a consideration. You can run a RPM/Time based switch Map to turn the second pump on but that does mean you probably need a Aftermarket ECU and involves a few hours mapping to correct any fuel pressure swing that might occur when the second pump kicks in. Then at least your not using the second pump all the time, and you do have another pump spare if the primary pump fails so you don't get stranded just switch the plugs on the pumps and you just have to limit your self to 50% throttle on the way home.....

Yes this is more complicated system but the prices of 2 pumps is comparable to buying one larger unit....

Its realy personal choice, just remember alot of the WRC boys swear by these 044's......

Wayne's / LuckyP's car has a Toyota WRC twin 044 system but I think they had it mainly in-case on failed they could throw a switch on the cockpit and continue.

[TuxMan]

Thanks guys , we are up to 635 bhp and 550lbft of torque so looking for a better pump seems to be the next step , was thinking of upgrading to a Prolab Prodigy , would like to stay with a single pump if possible .

[738 driver]

Pair of 044's fed from common supply pipe.. switchable as per stock dash left/right (to even out usage/wear) micro-switch on the throttle linkage which energizes the redundant pump at a pre-set point.. Easy, reliable and cheap. 044's 125 quid each, simple pair of relays and microswitch 25 quid... job done 1000HP.

[TuxMan]

Biggest problem with the Noble is space , my tank has a -10 outlet so would that be big enough to support 2 pumps ??
Would you set the pumps online or side by side ??
Surly it is simpler just to fit a bigger better pump ??

[738 driver]

Parallel (side by side) y piece in y piece out put a one- way on top of each if you like... although you cannot feed back into the versions I have.

G luck

[MarkWebb]

Tux
A number of us seem to be suffering from overheated fuel due to big pumps that thrash the fuel round and round because 90% 0f the time they are way to big for what we need. The 2 pump idea would help in this case.

[738 driver]

MarkWebb said:

Tux
A number of us seem to be suffering from overheated fuel due to big pumps that thrash the fuel round and round because 90% 0f the time they are way to big for what we need. The 2 pump idea would help in this case.

Yup.... no point moving, heating, foaming fuel you dont need..

Fuel on demand (pump control) is the real answer but the simple two pump switchable method also works well, is very cheap and means you will never be stuck due single fuel pump/controller failure ??

[TuxMan]

If you look at the Fuelab prodigy it has a fuel demand system that is digitally controlled and give variable speed operation to help with vaporisation and fuel temps !! Was thinking about this unit . Have been following your fuel issues with interest !!!! Tux

[738 driver]

On demand 'System' or just controllable pump's..... any link to a system ?

[John1949]

How about one of these:

http://aeromotiveinc.com/products-page/fuel-pumps/...

With one for these:

http://aeromotiveinc.com/products-page/accessories...

Should be able to keep up with anything you put in you car.

[spatz]

parallel pump that is the easiest way, redundant simple to make and will not alter your ECU settings

[Pb3]

I would never go the shiny, pretty looking Aeromotive route again, expensive mistake. I had one that fell apart inside, but looked lovely from the outside. I changed to an 044 and never looked back, so I would go the twin pump (switched route) too, if needed.

[macgtech]

Pb3 said:

I would never go the shiny, pretty looking Aeromotive route again, expensive mistake. I had one that fell apart inside, but looked lovely from the outside. I changed to an 044 and never looked back, so I would go the twin pump (switched route) too, if needed.

Double pump is the tried and tested route, there are kits available to plumb this straight in. We wouldn't use the variable speed systems etc - it just seems like something else to go wrong.

[TuxMan]

Ok , some great input thanks , if i run a second pump thats say switches on when i go to high boost my only concern is if the pump fails or plays up i have a melted engine , 1 pump will give me some indication i have a problem before i go to high boost , other problem is space for a second pump ....there is no room !!




would it be ok to run the second pump split off the same filter ? or would i need to a second filter as well ??
here,s a link to the pump i was thinking about . Tux

Edited by TuxMan on Monday 12th December 10:12

[ultimichael]

Maybe another option.
Pierburg E3L, 330 l/h @ 5 bar (72 psi).
Quiet, less than 16 Amps. Price in Germany approx. 250,- €
Downside is it has hosebarbs.

http://www.compsystems.com.au/index.php?option=com...ierburgefp&catid=2:ecu&Itemid=14
Only link I could find at the moment in English.

I will use it with my LS7.
It can be used inside the tank if the rubber jacket and the blue sticker
are removed. Info from Pierburg technical service.

Michael

[GarethGTR]

Hi

I use a Fuelab pump (actually two, a LP and a HP). They are very quiet, ultra relaible (brushless) and are good up to about 1000 hp.

You can also easily set the flow rate to suit the application.

Gareth

[GTRCLIVE]

With twins you will need the Bosche none return valves at the outlets of the pumps but there easy to get even Demon Tweeks sells them and yes you can use the same filter as long as its not flow restricted.

[GTRCLIVE]

spatz said:

parallel pump that is the easiest way, redundant simple to make and will not alter your ECU settings

Have you used this system ? if so what regulator did you use ? the GTW's system used a Aeromotive version and the pressure spiked for a split second....