Fuel pump and regulator

[JimX]

I've done a search and found a few answers, but not all. Apologies if these questions have already been answered but keep in mind that there were a lot more to begin with that I would have also asked if I didn't search

Ok, it seems the general consensus is that once you hit around 220rwkw, you'll need to upgrade your fuel pump, and possibly the regulator. I am looking at getting a Bosch 044 for this reason.

The most important question I need to ask is - What is the part number? The reason I ask is because I have a friend who *may* be able to get me wholesale prices, because his company deals with Bosch. But since it's mostly NOT for car stuff (mostly power tools and other electrics), he'll need a part number rather than just ordering a "Bosch 044 fuel pump".

My next question is would I also need to upgrade my regulator at the same time? If so, what should I be looking at getting, and roughly how much should I be spending? I don't care about brand names, as long as it does the job I'll be happy with a cheapie (but preferably new) item.

Oh, and lastly - are these things relatively easy to fit yourself? Do they bolt straight up or do they need an adaptor of sorts? Do I need to pull the fuel tank out to fit everything?

[T0nyGTSt]

Brand name fuel regs. are like ~$200 or so.

That's for a stainless Apex'i or HKS etc.

I'd rather that than a Malpassi. I wouldn't fit it myself because I'm dumb.

T.

[blind_elk]

Despite I have one, I have no idea what the part# is.

You shouldn't necessarily need to replace / upgrade the pressure reg.

email the boys at Zoom ([email protected]) and ask them which issue had the article about installing the upgraded pump - but its not a simple pull-one-out-put-one-in upgrade though.

[benm]

Good Q's Jimmy coz im up to the same type of area with my mods.

203rwkw and im thinking that a Rising Rate Fuel Regulator ~$190 should help fix up my leaning out problem at top end on 12psi. Even if it doesn't it'll be needed anyway sometime throughout this year.

The Rising Rate Fuel Regulator needs to be tuned I believe ?

Lemme know if you get any prices Jimmy I might be in for a group buy

[JimX]

Ben, where are you getting the rising rate regulator from? Where does it actually go? At the tank or the fuel rail or somewhere in between?

Blind_Elk, I've emailed them and am waiting for a response. Off-hand do you know roughly what's involved? Like, do I have to cut a section out of the tank, make an adapter, drill new mounting holes, etc? How much would a performance shop charge to do all this for me? I'm pretty handy with a spanner, but working around fuel makes me nervous

[browny]

For cheap Bosch pumps have a look at this thread:

http://board.performanceforums.com/forums/...readid=67142321

[JimX]

Thanks for that info Browny, but after reading the thread I just have more questions

The 044 seems to be too big for my application, if the cheaper 984 can flow up to 600hp. Even 600hp is way beyond the scope of anything I want to do with the car in the near future, so should I be looking at getting the 984 instead and save myself $100?

Are all these pumps pretty much the same size and shape, or do some require more or less work to fit and get working properly?

Edit: 'nother question - Am I getting an internal or external pump here?

[sidewaymambo]

you need a internal to fit the fuel pickup..with a short section of hose fit in front of the pump..

044 is good, I feel it's a bit quiet then GTR pump..

[ed]

yeah get internal to replace your existing stock pump.

Unless you're gonna go for a surge tank setup.

[benm]

Originally posted by JimX

Ben, where are you getting the rising rate regulator from? Where does it actually go? At the tank or the fuel rail or somewhere in between?

I did a search on google i think for aussie websites and they seem to be around the $195-$215 price for a brand new unit. I have absolutely no idea where they go or anything like that

:bahaha:

[ed]

are you talking about Malpassi units Ben?

[JimX]

UAS sell a Malpassi unit for around $290, so I'm guessing you can get them a lot cheaper than that elsewhere

[ed]

I bought a rising rate one a few years ago for like $180.

EDIT: It was a malpassi unit.

[JimX]

I just got a response from the guys at Zoom, they told me the fuel pump article is in issue 36, and that it's no longer available Can someone that has that issue please scan the article for all us fuel pump upgraders?

[T0nyGTSt]

The regulator goes on your fuel rail.

I can get a quote on a GB.

T.

[blind_elk]

Originally posted by JimX

I just got a response from the guys at Zoom, they told me the fuel pump article is in issue 36, and that it's no longer available Can someone that has that issue please scan the article for all us fuel pump upgraders?

I can only do it in 'hard-copy' ie fax the pages to you. Do you have a fax# (pm me if you do). (And it won't be until tomorrow.)

[Sydneykid]

Hi guys, fuel pump info as we know it.

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

We use one GTR pump mounted in tank up to 400 bhp and for engine over 600 bhp we use twin GTR pumps with a surge tank and a GTST lift pump in tank.

Hope that helps

[sidewaymambo]

thanks sydneykid..

[JimX]

Question regarding the wiring up of these pumps. As I understand it at present, the factory pump doesn't pump out at full capacity all the time, it waits until you open the throttle up before giving it a full earth. There's another thread here that talks about giving the factory pump a constant earth all the time to help with stalling problems at idle.

Should the bigger Bosch pumps be hooked up in the same way or should we hardwire them to a constant earth? I'm mostly concerned with burning the pump out too early by running it constantly at full capacity. But if that's what they were designed to do (unlike the factory pump it seems) then that's what I'll do

Edit: Oh yeah, thanks Sydneykid! I didn't even notice you had the part numbers in there at first, it kind of blended in at the end

[JimX]

Btw, since the 984 is good for up to 500hp, I think I'll go with that because my turbo only flows up to 450hp anyway. Unless the bigger 044 allows the stock injectors to flow a little better? If so I'll spend the extra $100 now so I can delay or put off indefinitely my injector upgrade.

Sydneykid, help!