Fuel pumps

[bbenny]

Hey ive done a search on upgrading my RB20's fuel pump and come up with a few mentions of the bosch 040 and 044.

I understand these are internal pumps fitting the same position as the std pump.

Im not too familiar with their flow capabilities and what is best for my application.

what other suggestions would you guys have for around 200 - 220rwkw RB20? and whats the best type of regulator to get in combination with this setup?

[Sydneykid]

Hi bbenny, an R32/33 GTR or Z32 TT fuel pump, fits straight in and good for 260 rwkw. Pick them up on the forum for around $250.

[Roy]

Whats the deal with 2nd hand fuel pumps, an R32 GTR pump could be over 10 years old. For the sake of an extra few $$$ you can have a new one.

If you shop around you can have a Bosch 040 for as low as $325, its new, flows more, and still fits in the std location with a bit of a tweak. Are the GTR/Z32 ones any easier to install?

[Emre]

Bosch pumps require a litlle bit of modification to be installed in the tank and in 044 form is an overkill for a mild setup.

GTR or aftermarket GTR pumps are a direct fit in comparison.

Including installation, expect to pay over double for the Bosch pump.

[bbenny]

to be honest i dont want to skimp on my fuel supply so i dont mind going new - ie bosch.

but exactly what is it that i need to modify to fit? i was planning on doing it myself.

and if 044 is over kill. what would you recomend from the bosch series?

[Nrage33]

wut about for an RB25? which would suit it best?

[Emre]

I got mine done at the workshop so i am not able to talk you through it. There is a bit involved and insulating it against noise is a good idea as well.

Bosch has a variety of pumps that will do the job. Below is a quote from Sydneykid some time ago.

*GTST pump is 135 litres per hour and supports 300 bhp at standard pressure  

*GTR pump is 190 litres per hour and supports 420 bhp at standard pressure  

*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 044 pump is 330 litres per hour and supports 730 bhp at 73.5 PSI # 0 580 254 044  

*Bosch 040 pump is 235 litres per hour and supports 520 bhp at 73.5 PSI # 0 580 254 040

[predator]

I just installed a Bosch 910 yesterday in mine (see attached photo).. its not a direct swap into the standard bracket but it fits.. I managed to wedge it in there ok.. needs a bit of dicking around to hook up the feeder (u can see i had to rig a bit of hose) - but its all working fine and sucking from the correct angle. Only took an hour or so - hardest part is just getting the tank open (socket extender and hammer worked fine)

Don't worry about the duct tape .. it was pretty much sitting in there ok (and that chunky hose helps wedge it in place), that was for extra support. A proper large hose clamp, or even some wire should hold it locked in position if u are worried about it coming loose.

Noise, yes, when you turn over the ignition u can here it sucking a lot more obviously, but it doesn't bother me at all

[Steve]

Originally posted by predator666

Don't worry about the duct tape  

Have you ever seen what fuel will do to the sticky stuff on tape?

[predator]

Er, yes, i worked that out later that it wasn't too safe.. i need to sort that out properly tonight and will get a clamp and fix up the wiring. Don't worry, i haven't been driving it.

[Steve]

I found a big stainless hose clamp, like on the intercooler pipes, works pretty well.

[JimX]

After looking at that 910 pic I'm thinking of trying to put my 044 in again myself. I have a couple of questions though

When you mount the pump internally, it needs some sort of screen doesn't it? Where can you get these from? I am guessing you don't want to use any old screen that will disolve in fuel over time, and it needs to fit properly over the fuel line pickup.

Also, how do you get the fuel pump out of the tank? A long time ago when I first attempted this mod, I took the big plastic cap off my tank and then couldn't figure out where the pump mounted. I since found out that it's at the bottom of the metal bracket I can see in that pic, but where is it affixed to at the top?

[predator]

If you can see at the bottom of my dodgy photo, I have simply reattached the existing screen from the old pump (which was very clean), using a small bit of hose as a connector.

There is a plastic tab that locks the angle in place of the screen in the stock pump which kind of gets in the way. I simply cut that off, and over the top of that sheathed a small piece of hose and angled it per the stock pump setup. Once you get it out, it all makes sense.

This is a very poor photo.. but this is a shot looking inside. The top left white plastic you can see is where the metal bracket slides into and sets the correct angle.

[JimX]

Thanks for the info Pred, if I have enough energy and enthusiasm after I put my turbo back on on Wednesday, I'll give it another go.

Out of interest, how did you get the plastic cap off the tank? I ended up using a screwdriver and hammer to punch it off, but I ended up putting a few dings in the cap. I would rather remove it in a less damaging way next time.

[JimX]

Steve, where can you get hose clamps big enough to fit the pump? Auto 1?

[predator]

I just bought one before ... $3.20 from Repco, but most places that stock standard car bits should have those sorts of clamps

Removing the tank lid i used a blunt socket extender i had and hammer, as per rev210 i think suggestion in another thread. It got it off with only minimal damage to the lid and maybe 15 mins work. After that i greased the opening - made it so much easier to get back on.

There is a proper tool to remove it, but could be hard to track down - 200sx has the same setup.

[JimX]

Did you secure the clamp with anything to stop it working loose and sliding down? I don't like the idea of trying to retrieve a pump that's fallen off its bracket :blah:

[Guest RedLineGTR]

time for a fuel pump upgrade for future mods...

[predator]

Finished it all tonight properly this time.. looks like the below..

JimX - with one bracket like that done up that tight its never ever moving.

[JimX]

That looks very schmick! You have inspired me to have a go at putting my 044 in. If trying to put my turbo back on tomorrow doesn't demoralise me too much I'll try it on the same day