Just installed Walbro fuel pump

[tang0]

Installed a 255 lph walbro fuel pump this evening ..

while i dont have pics of doing this, have a few pointers for anyone else doing this mod ...

0. take off the battery negative and bend the earth strap back ! If possible have a fire extinguisher near by - general rule is no closer than 5 meters, and pref behind an object, upwind. (watch as my SES training comes in handy)

1. get a walbro pump ! the fitting is almost identical to the stock item. The pump i got from ebay came with all the necessary bits, and fits directly into the stock location, no modification at all ! even the sock filter from the stock item fits the new pump ! great !

2. use a thin ish peice of hardwood and hammer to get the black ring off ... its on pretty tight, and needs a fair knocking to break the seal.

3. when you take off the hoses from the white cap, the output line (to the engine) is under pressure - either leave it attached and just bend the pipe back, or when you take it off, immed direct the pipe back into the fuel tank ...

4. The new pump is thiner than the old one, so i just put a couple of zip ties around the pump and the mounting bracket for peice of mind.

5. make sure that your electrical connections are nice and secure, you have to cut and join 2 wires, just keep a note of which is which - you get some connectors with the pump.

6. IF you spilled any fuel anywhere. either make sure you wipe it all off, or hose down ....

7. when you are done, just turn on the ignition, dont start, let the pump re-pressurise the system first, takes about 5-8 seconds, then start ... all should be good !

Can't say i have noticed a difference in performance, this is just getting everything ready for the GCG high flow, injectors, fuel reg, afm, and PFC !!

rar

Cheers

[cameron]

2. use a thin ish peice of hardwood and hammer to get the black ring off ... its on pretty tight, and needs a fair knocking to break the seal.

haha good stuff

The propper tool if you have it is called a lock rich wrench. - Not sure how much they are.

Its not that difficult to change fuel pump, takes about 1hr in and out. - With a bit of muking around aswel.

Good guide! :uh-huh:

Jun

[tang0]

yeah, taking my time over it took about 1.5 hours ... not bad i guess ..

now my hands will just take a few days to stop smelling of petrol ! lol no matter how much i wash em, can't get the smell out ...

should add that to the guide

use surgical gloves

[gtst25]

Another interesting point when working on the fuel system is to remove the fuel pump fuse and start the engine letting it starve ( only takes a few seconds) to get the pressurised fuel out of the system.

Cheers!

[tang0]

i see what you are saying, i just have worries about it leaning out on one, and doing something horrible ...

I know that its only at idle, and shouldnt cause a problem ... i just like to be safe, rather than 3k out of pocket ...

[Jay95R33]

Tango - do mind if I ask how much the pump was ?

[tang0]

um, yeah, twas an ebay jobbie ...

$199 inc shipping

http://cgi.ebay.com.au/ws/eBayISAPI.dll?Vi...item=2493214287

He seems to have a lot of them going ....

the pic on that auction is exactly what you get

expect for the r33 S2 GTS-T installation you do NOT need :

the fuel pipe

the sock filter

the clamps

re use the standard ones, and it like a stock pump ! just flows more !

cheers

[Jay95R33]

What are they like for noise ? Are they noisey at all ?

Thanks

J

[tang0]

can hear a VERY slight hum on idle, only with the stereo off tho, rest of the time cannot hear it at all !

What are they like for noise ?  Are they noisey at all ?

Thanks

J

[Trust33]

Good to hear.

[predator]

What does 255L/hr translate to in the Walbros roughly in terms of power?

As i know they don't quote above boost pressure..

rough estimate will do.. as injectors, etc would make it vary I would have thought?

Would they be able to flow 300rwkw?

[Jay95R33]

One fella here on SAU is getting 273rwkw out of one, but apparently it is on the limit. So I don't think it'd get to 300.

They seem OK for upto ~230-250.

J

[tang0]

my aim is for an every day driver friendly (ish) 250kw, so it suits my needs well ...

[predator]

Just did a bit of google - looks like at 72psi which the Bosch's are rated at = ~190L/Hr in the walbro (using the graph below).. so this translates into roughly a Bosch 910 in terms of flow... Not for big really HP.

[tang0]

nice one !!

agreed ... not a big hp pump, but then again, its not part of my plan for BIG hp ...

i want to keep a set of boots for a few months at a time

cheers