Fuel Pumps

[Coupe-This]

Hey guys, in the near future i will be upgrading my fuel pump. now my first option was like a bosch 040, but then i will get the qtr tank syndrome wont i ? cant use the last qtr of the tank properly?

Just after a pump that can handle 300rwkw (wont be going for that much power) just to be safe tho.

and works just about 100% the same as the stock pump. Would it be an idea to get an inline pump instaled ? Would this work ?

what options do i have to play with

[Spook's_Skyline]

mercury motorsports just told me that 040's are no good in r33 gts-ts due to how the pump works

they use walbros

i had one fitted

[Coupe-This]

hmmm i havent heard the best things about walbros. Just from reading. It all depends tho i guess

[justin911]

why are 040 no good in r33's ?

[|PRESA|]

I just installed a Bosch 040 yesterday in my car lol thats not the kind of stuff I wanna hear

[predator]

walbro won't get you 300rwkw..

[|PRESA|]

I don't mean to steer off the question but are aftermarket fuel pumps supposed to be that much louder??

I installed the 040 and when I turn the ignition on to prime the injectors the pump makes a pretty noisey werrr sound like it winding up.

[predator]

yes, nearly all are louder.

With more fuel in the tank they are a bit less noisy, as they are surrounded in fuel.. less echo

[|PRESA|]

Phew nothing to worry about them

[paulr33]

gtr fuel pump should be fine for your requirements.

direct fit and easy to hook up. why do u want a pump to suit 300rwkw?

do you know how much its going to cost you to get to 300rwkw?

the pump is the last thing to worry about

[Nozila]

gtr fuel pumps can handle about 250rwkw's i believe, correct me if im wrong.

[justin911]

presa, theres nothing wrong with the 040 fuel pumps...

do you know where abouts 'empty' is in your car now though ????

In my i like to make sure ive always got 1/4 of the tank full just incase

[raz0r$harP.UK]

040, no extra sound in my car. But yeh, 1/4 tank is kinda annoying - that's like an extra 100km I could go.

[justin911]

be nice if the empty level also didnt change......

that might just be me though :|

[gtst25]

Hey guys, in the near future i will be upgrading my fuel pump.  now my first option was like a bosch 040, but then i will get the qtr tank syndrome wont i ? cant use the last qtr of the tank properly?

Just after a pump that can handle 300rwkw (wont be going for that much power) just to be safe tho.

and works just about 100% the same as the stock pump.  Would it be an idea to get an inline pump instaled ?  Would this work ?

what options do i have to play with

<{POST_SNAPBACK}>

That quarter of a tank business is a load of rubbish - it just depends on how good the installation is. You've got to get the pump as low as possible in the tank. So many people install aftermarket fuel pumps in tank and don't do the job properly. I even saw someone on these forums mount his in tank onto the factory fuel pump mount with DUCT TAPE!!

Working in the fuel tank of an r33 is a real bitch - the fumes kill half your brain cells and you'll have no skin left on your fingers.

I did an 044 in tank into my r33 - If I were you I'd put my pump in line - it's just too easy. I have no problems getting over 500 k's to a tank and can run it down to empty.

Don't know about this talk of bosch pumps not working well with skylines - I've had no problems but mine runs flat out all the time without the factory speed control.

[Coupe-This]

i wont be getting 300 rwkw, i just want a pump that can outperform my cars fuel needs, its no good running a pump at 90% cycle, when u can get another pump todo the same work at say, 60% cycle, which one will last longer?

I was thinking about getting an inline pump, what one tho ?

hmm who in vic has had an 040 installed without the vibrations and the qtr tank syndrome ?

I want it to act like the stock pump, take it to empty if i wanted to sorta thing.

[m&m]

I had a 044 pump fitted in my S15,the friend that fitted it went to so much trouble to get it in the EXACT same spot as the original.When my light comes on at 50 litres used,I always get exactly 50 litres in the tank.

I am in the process of replacing the pump in my GTR.The car makes makes 340rwkw on Racepace dyno,Ben assures me the stock 10yo pump is up to the job,as does Nigel at Ice.As Ben rebuilt the motor and tuned the car,I guess he'd know.The car also pulled 379rwkw in shootout mode on Racepace dyno.

I dont pretend to know as much as these 2,but I'm replacing with a Tomei in tank,rated as 276l/h.

So going by my GTR,the GTR pump should be fine in your GTS,hope this helps.

[paulr33]

having a pump that can outperform your cars needs is fine but there are inherent stuff you need to know above,as the guys have posted can't go below 1/4 of a tank. also when sitting in traffic (peak hour) and if you have a nice big pump every time you tap the throttle the pump runs on full mode and will pump like crazy so it will pump (i think it was 3 litres of fuel in a minute) for the 044.

so the fuel gets hot in rail and then pumped back again and repeats. also the stock injectors and fuel rail will max out well before 250rwkw so having a larger pump with stock everything else is really only half the problem solved.

my advice would be gtr 2nd hand pump, 550cc or 480cc injectors and nismo fuel pressure regulator. whats your power goal? all of those are useless if you only want 190rwkw

[MacGuyver]

I originally had a 040 in my R33 and couldn't use the last quarter of the tank. I then lowered the pump in the tank (was told this was bad), took it to a workshop and was told that 040's aren't good in Skylines. So now I have a Walbro one instead. I can't say that the Walbro pump is better than the 040, but now I can use the full tank and it doesn't make anymore/less noise than the 040 did.

Could you get the 040 to use the full tank if you could attach a sock on the end like the stock one? I know that the 040 doesn't have any place to attach one, and that the filter is built in to the pump, but could the sock solve this? My brother has a 044 modified to work in tank and this was achieved by fitting a sock to the end. So if you can modify the 044 with a sock, how about the 040?

"They taste like burning!"

[paulr33]

the walbro's are rated at 15volts. the wiring in the r33 only supplies 13.5 volts or thereabouts so it will never flow its potential unless you upgrade the wiring (cubes has a thread recently on how to do it)