What fuel injection pump?

[Pb3]

What pump are you LS boys using for your high pressure (3 bar) fuel injection systems. I have an Aeromotive 11106 that has just let go, after stripping it down I will not be paying £350ish for a replacement as it is cr*p. So I am looking for something else that comes recommended.

Thanks,
Phil.

[spatz]

always have suspected that this aeromotive stuff is blenders, get yourself a 044 BOSCH, I talked with Bosch here in Germany, they never fail. Extremely reliable pump. Got mine for 185 EUROs on ebay germany.

[738 driver]

Again the 044 Phil......if you want to bling it up a bit there are Chinese billet, anodised mounts available.
Pumps are about £125 on flea-bay.

Although the A1000's are well specified and favoured units they seem quite agricultural, hot and loud by comparison!

[eliot]

Another vote for an 044 bosch. My one is from a ex WRC rally car!

[Pb3]

Thanks guys, 044 it is.

I have been in contact with Aeromotive and they have offered to repair it. I found that the magnets were glued to a steel sleeve, these parted company thus jamming the rotor hence loss/no fuel pressure and blown fuses. The modified design has the magnets machanically attached to stop the failure.

But, that will take time and the 044 sounds like it is a lot better in terms of overall reliability which is now my main aim, rather than something that looks pretty on the outside!

[eliot]

I would replace your post pump filter too. I have heard of people not running a post pump filter - your experience should be enough to say why you want it.

[GTRCLIVE]

One 044 Pump is good for about 600bhp, anything over that then you need 2 pumps. The only thing with 2 pumps is that they draw 15-20amps each. If you also have 2 lift pumps normally around 5 amps each then you looking at a nearly 50amp load just for you Fuel pumps, and that's my only concern for those of us with over 600bhp that's got to rob allot of power from the engine.....

[ROWDYRENAULT]

I don't normaly argue with Clive but when I saw this topic I asked my engine builder Nils Castilo his input. He picked the Bosch pump also. The argument with Clive is that Nils supports several teams that run his 750hp ls7 in offroad trucks on one 044. All of these trucks run Motec and the data from each is reviewed a lenght after each race and they have never seen a drop in fuel pressure. respectfully, Lee

[GTRCLIVE]

ROWDYRENAULT said:

I don't normaly argue with Clive but when I saw this topic I asked my engine builder Nils Castilo his input. He picked the Bosch pump also. The argument with Clive is that Nils supports several teams that run his 750hp ls7 in offroad trucks on one 044. All of these trucks run Motec and the data from each is reviewed a lenght after each race and they have never seen a drop in fuel pressure. respectfully, Lee

Both a renowned Engine builder (built plenty of 24hour lemans engines) and the guy that bought Motec to Europe in the first place (Ex TTE employee and mapper of Celia's for Carlos Sainz WRC Cars back in the day) say they don't trust them above 650 as they have seen failures. So that's what I know from people that where paid by the best to know what there doing.... I would always recommend a Safety factor in these kind of things, when at the limit the last thing you want is a fuel pump failure...IMHO....

[Pb3]

I do run post and pre pump filters, 120 micron (rock filter) before the pump and a 10 micron paper element (FSE Sytec) after. The pump failure is not down to filtration, rather a design flaw that seems to have since been rectrified by Aeromotive.

I have now ordered an 044 and JIC fittings so I can do a 'direct' replacement, meanwhile I will probably take Aeromotive up on their offer to fix my 11106 and keep it as a backup, although it will probabily never be needed if the Bosch is as good as its rep.

[Vixpy1]

The 044 is a tried and tested pump, They will really only support 600bhp per pump though. I have seen a couple fail, but it seems far more reliable that any other pump I've seen.