Bosch 044 Fuel pump help needed

[andyg plym]

Hello fellow geeky forum members (thats what the wife calls us..)

Following on from this thread http://www.s2forum.com/forum/showthr...light=rs2+pump

I am on the hunt for a bosch 044 fuel pump and need some help on a few things:

1) Which model?

2) Can the ones advertised as external actually be used in the tank?

3) Basket....which one? I have an RS2 and S2 one at my disposal

4) Fittings- which one will I need?

I have spent ages on the forum searching at other forum members similar posts but have never been able to come up with a definitive answer, not just that but most posts on here are from years ago etc, does anyone know if bosch have an even better pump these days?

Car is RS2 spec circa 400bhp setup and Avant.

Thankyou for any constructive help anyone can offer

[UrS4boy]

Andy: You really need to take advantage (and use) the forum search function sometime:

If so, you would have found Doug_RS2's fitment guide thread:

http://www.s2forum.com/forum/showthread.php?t=14698

Which sometime ago, I turned into a printable pdf that you can take out to the car. I know I post it up here before. Here it is again (See attached):

[andyg plym]

Dave thanks for the input, I genuinely appreciate it. The problem is I have read that post, I typed the 0 580 254 044 part number into ebay and it comes back with an 040 pump, again thought this was oldskool? Also I am under the impression coupe's are different to Avants.
I really dont want to open up yet another thread and just start a debate... take a look at this

http://www.s2forum.com/forum/showthread.php?t=65071&highlight=fuel+pump

Perhaps I should of made it clearer.....What 044 Pump on the market right now is best?

[andyg plym]

i found this too:

Bosch 910 pump is 200 litres per hour and supports 450 bhp at 73.5 PSI # 0 580 254 910
Bosch 975 pump is 228 litres per hour and supports 500 bhp at 73.5 PSI # 0 580 254 975
Bosch 984 pump is 228 litres per hour and supports 500 bhp at 73.5 PSI # 0 580 254 984
Bosch 040 pump is 235 litres per hour and supports 520 bhp at 73.5 PSI # 0 580 254 040
Bosch 044 pump is 330 litres per hour and supports 730 bhp at 73.5 PSI # 0 580 254 044

which one? its only 400bhp

[UrS4boy]

i found this too:

Bosch 910 pump is 200 litres per hour and supports 450 bhp at 73.5 PSI # 0 580 254 910
Bosch 975 pump is 228 litres per hour and supports 500 bhp at 73.5 PSI # 0 580 254 975
Bosch 984 pump is 228 litres per hour and supports 500 bhp at 73.5 PSI # 0 580 254 984
Bosch 040 pump is 235 litres per hour and supports 520 bhp at 73.5 PSI # 0 580 254 040
Bosch 044 pump is 330 litres per hour and supports 730 bhp at 73.5 PSI # 0 580 254 044

which one? its only 400bhp

It's not all about flow. It's about pressure at the required flow. For 28 psig (1.93 Bar) boost, with a 4 Bar (58 psig) pressure regulator you need 86 psig (5.93 Bar) at the fuel rail. The Bosch 044 is one of the best pumps that can do this.

[UrS4boy]

I typed the 0 580 254 044 part number into ebay and it comes back with an 040 pump

Just Googled the 044 PN and one of the results was an eBay uk posting for a 044:

http://www.ebay.co.uk/itm/Bosch-0580...-/160514237096

[andyg plym]

Interesting, which bosch pump do i need specifically?

that one says external fitting ??

thanks

[UrS4boy]

3) Basket....which one? I have an RS2 and S2 one at my disposal
4) Fittings- which one will I need?

You say you have read the links I provided but yet you ask these questions that are clearly answered in the links.

[UrS4boy]

Interesting, which bosch pump do i need specifically?

Did you really read Doug's DIY (either the thread or my pdf)?

The 044 was originally inteded for external tank use. HOWEVER, it can and has been installed by many many people INSIDE the fuel tank. Works fine. (This one DOES need an external check valve, as detailed by Doug).

[andyg plym]

Dave, thanks for the input as mentioned but I really dont want to turn this into a debate.
Yes I see your point, of course I do, but I am trying to put everyone in the picture,I already know 1 or 2 answers to the questions I set out to be answered, but then my logic was I wont be the only person in this position, others will at some point do a search and rather than getting fed up of all the debate- just be looking for the answer:- from someone who has actually done the conversion.

If you have then fantastic, you are just the person I need input (and I appreciate it, all the links you post,the time you spend etc and its all because we all share the same interests) from.....

No offence intended

[mcandmar]

1) Which model?

Buy the 044. The 040 is cheaper but just fit the 044, the more headroom the better.

2) Can the ones advertised as external actually be used in the tank?.

Yes, pump can be used in or out of tank

3) Basket....which one? I have an RS2 and S2 one at my disposal

The bigger one, used on older mechanical injection cars or early 7A's. As a general rule all 10v cars, 80, 90 or 100 if you fancy searching some scrap yards for them.

4) Fittings- which one will I need?

Complete parts list can be found here --> http://www.s2forum.com/forum/showpos...5&postcount=21

Only thing not listed is the eye connectors for the wiring loom, Bosch pumps have larger terminals so you will need to replace them.

[andyg plym]

Thanks mcandmar I appreciate your polite response

But I don't feel I have my answer of :

WHICH MODEL 044PUMP ? There is more than one and all these previous guides were from a while ago , just want to make sure I get the best one for my setup

Thanks again

[Thuppu]

Hmm, I havn't seen other than one model..?

Part number is: 0580 254 044

[andyg plym]

There's at least 5 that I've seen

[UrS4boy]

There's at least 5 that I've seen

This does NOT seem correct. A 0580 254 044 is a 0580 254 044. The only thing is you want to get one that is made in Europe, not a Chinese copy.

http://www.ebay.co.uk/itm/Bosch-0580...-/160514237096