Walbro 400Lph Problem

[SiR_RB]

Abit off topic but where's the cheapest place within australia to buy genuine walbro pumps from?

[Hadouken]

If I were you, I would talk to BoostnImports on here.

He's very helpful and he's prices are very good

[B-rice]

Theyre talking about fuel needs. If u run alot bigger pump than necessary u will heat the fuel up more

Thanks Jez,i just read about heating up fuel to the extent of boiling in another thread makes sense now.

[SiR_RB]

Out of curiosity has anyone ran a normal walbro 400lph fuel pump with E85?

Do they corrode and or start making noises and eventually die?

[johnbarry88]

has anyone used one of these with e85 and found the limit in HP, if so what did you make?

[SiR_RB]

that too ^

[DVS JEZ]

I run a non ethanol 400lph walbro instock R32 GTR position, has been in for almost a year now sits there corroding away... I mean dorment for months at a time as the car doesnt get used alot.

Has no problems pumping 400kw on stock pressure with id2000's

[STATUS]

these pumps dont like draw large distances its very important not to extend the pickup more than an inch from the base of the pump unless you know what your doing....

[stav]

these pumps dont like draw large distances its very important not to extend the pickup more than an inch from the base of the pump unless you know what your doing....

Even in an R33/34 GTR ?

[r33-20s]

has anyone used one of these with e85 and found the limit in HP, if so what did you make?

i just had my 33 tuned to e85 with walbro 400 and made a easy 330rwkw

[GTR_JOEY]

I imagine it would do 400rwkw on E85..

I'm running two walbro's on e85, planning on Installing a fuel cooler as it does get warm

[SiR_RB]

I got a walbro e85 450lph pump and wired it with thicker cables via a relay to get full 14volts

Had it tuned the other day on e85 and it seemed to run out of puff at around 360-370rwkw....didn't have time to check it out yet, I'm going to double check the voltage at the pump and give the sock a clean after a few tanks of ethanol incase it get clogged of shit

Anyone had this issue? My battery is in the boot so the power cable is short, also noticed the pump is very quiet, is this normal?

Any suggestions guys?

[scotty nm35]

A simple fuel pressure gauge would help diagnose, if it drops pressure in the top end you either have something restricting the fuel flow, or the pump isn't keeping up.

[scotty nm35]

Can't edit my post for some reason...

What base fuel pressure are you running, and at what boost?

[SiR_RB]

Il get that looked at and double check the voltage

Not sure about base fuel pressure but I have a stock fuel reg....

[scotty nm35]

Perhaps you have reached the stock reg's limits? They only have a 2mm or so hole in the pressure valve.

[SiR_RB]

Not sure but I'm pretty sure people have cracked more then 400kw with stock reg?

[scotty nm35]

Was that on e85 though? You have 30% more flow requirements on ethanol than 98... Anyway, as much as I hate having a fuel gauge in my engine bay, it has helped me diagnose many issues.

[battery]

I got a walbro e85 450lph pump and wired it with thicker cables via a relay to get full 14volts

Had it tuned the other day on e85 and it seemed to run out of puff at around 360-370rwkw....didn't have time to check it out yet, I'm going to double check the voltage at the pump and give the sock a clean after a few tanks of ethanol incase it get clogged of shit

Anyone had this issue? My battery is in the boot so the power cable is short, also noticed the pump is very quiet, is this normal?

Any suggestions guys?

I have the 416lph and im at 360kw so you should be able to get enough fuel with the 450lph..

I had a 20A fuse protecting mine and it blew after 1000ks so it must be pulling 20-25A, 2.5mm wiring all the way to the pump would be sufficient however I would prefer to use 4mm for the bulk of it and you should bypass the standard plug through the lid.

[GTR_JOEY]

I'm running 2 walbro 400lph.. Both have 30 amp fuses