Walbro 255

[boosted_32]

As Above, thanks

[l0WRB]

over 300rwkw i know that much lol

[toffy]

Apparently around 500hp at the flywheel?

[The Mafia]

nope, I had one, leaned out at 280rwkw and above.

at 300rwkw, the afrs wouldn't go below 12.8:1, even with the injectors completely maxed in the power FC.

Have you seen the flow chart? Watch the blue line below 60psi.... Terrible!

Edited February 4, 2008 by The Mafia

[R31Nismoid]

mine saw the end of its performance @ 240-250rwkw

Walbro's are a mixed bag.

Sometimes they work, sometimes they dont... i wasnt even running upped rail pressures over normal conditions

There are FAR too many threads now with people and Walbros who have fuel issues.

I simply dont trust them. Have used Bosch for the lasf 4 years since.

[boosted_32]

would a bosch 040 in tank pump handle 350kw? cheers

Edited February 4, 2008 by boosted_32

[The Mafia]

mine was ok, just ran out of flow.

Remember the ratings -

Walboro 255 is 255lph at 40psi

Nismo 275lph is at 275lph at 70psi (What I have now)

Nismo is a perfect pump, drops straight in like factory, has a factory bracket, hoses and plug etc. I'll never touch a bosche.

[RBwhatever]

lol yeah fuel pump wars.

I've got a walbro, but i'm nowhere near close to maxing it out with the stock turbo. It works fine for me, not so sure for you.

As above, nismo is the go or tomei.

[subie]

how hard to install bosch 040 into r32 gtst?

[R31Nismoid]

not hard when there are writeups in DIY section

[R34GTFOUR]

mine was ok, just ran out of flow.

Remember the ratings -

Walboro 255 is 255lph at 40psi

Nismo 275lph is at 275lph at 70psi (What I have now)

Nismo is a perfect pump, drops straight in like factory, has a factory bracket, hoses and plug etc. I'll never touch a bosche.

and walbro rate there pumps at a voltage which isnt achieved in a "normal" car, sneaky haha

[R31Nismoid]

same with Bosch, they quote 12v from memory.

[The Mafia]

well, I checked the R33 (SII) and it had 14.4 volts at the pump

[subie]

not hard when there are writeups in DIY section

no, there are not in the DIY section! already search!

[boosted_32]

would a bosch 040 in tank pump handle 350kw? cheers

No one has answered my question yet? will the bosch 040 handle 350kw? are they a drop in replacment? cheers

[R31Nismoid]

no, there are not in the DIY section! already search!

rubbish.

I went to DIY

Searched with 040

Found this

http://www.skylinesaustralia.com/forums/In...html&hl=040

5 seconds it took.

[VB-]

Have you seen the flow chart? Watch the blue line below 60psi.... Terrible!

whats terrible about it? i dont look at fuel flow graphs often but it seems to flow a fair bit below 60psi? its above 60 that it really drops off. and why does more pressure result in less flow? i thought mroe pressure would mean more flow?

[The Mafia]

yeah well think about it - rail pressure is 42psi + your boost (maybe 12psi?)

Thats a total of 54psi fuel pressure needed to drive the injectors. I don't know about you but thats putting the pump on edge and I wouldn't risk it.

Its a POS.

Actually, it was meant for NA applications..... Its pretty obvious..

[boosted_32]

some one plz recommend me a fuel pump that will hand between 300-350kw all day every day? cheers

[GreeceS13]

I am in the same dilema but I want something for 400-440wkw

My opinion is.... two walbros!!! Two walbros are cheaper than one 044! Here in Greece my mechanic said me that he saw many 044 to broke.. and aeromotive to broke...!! So he said me that with all pumps we have the danger to broke!

They broke either if you stay without fuel or if you leave the fuel for very long time (one aeromotive broke with the last way)!

If one of your two walbro damaged the other will work

So more safe!!

As I understand here in australian you don't use walbros... Here in Greece all people untill 500 fly hp use one walbro!

All are happy untill 500 with one walbro... too much scooby, evo etc!

After 500 you need a decent fuel setup as many people here told me what to do (surge tank solution with total 3 pumps)