JeDiMaster

Ive got a 88' Si doch crx, I am currently running a low 4.7psi with 390cc injectors on a IHI vf10 turbo, I have a walbro 255 fuel pump but havent installed it yet, and am obviously running the stock fuel pump,

So my question is - how much hp/psi can a stock fuel pump handle?

thanks in advance.

Outkast95LS

iTrader: (1)

If u have the walboro fuel pump, why not just install it. It takes like less than 30 minutes to do.

jDMJeRk

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Outkast95LS &raquo;</TD></TR><TR><TD CLASS="quote">If u have the walboro fuel pump, why not just install it. It takes like less than 30 minutes to do. </TD></TR></TABLE>
I think if its like a DA, you have to drop the gas tank

boostedcivicsir

i dont trust dx pumps on na setups, and unfotrunately being an ef the tank needs to come out. yuck it up and put in the walbro. it isnt worth the headaches associated with a lean condition.

JeDiMaster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jDMJeRk &raquo;</TD></TR><TR><TD CLASS="quote">
I think if its like a DA, you have to drop the gas tank</TD></TR></TABLE>

Yeah I do, I will install the walbro fuel pump, I did a read up on how to install one but at the moment I dont have the time as I am busy with other things like getting certification for the turbo set up etc,

I havent had time to put a air/fuel ratio gauge in yet and I was just worried that with the stock fuel pump it may be leaning out etc, I dont think so as its not a very big turbo ''a little smaller then a t25'' and I am only running 4.7psi ''at the moment'', currently it is chip tuned and seems to be quite good, but I also have an apexi s-afc ready to go in,

I just wanted to know what a stock pump can handle in hp? just for peace of mind that it isnt leaning out while I am driving ''not thrashing it'' to and from a few places before the walbro goes in

thanks.




Modified by NewZealandJDM at 9:37 PM 7/6/2006

wantboost

iTrader: (2)

i wouldnt risk it with a stock pump.

if you get an a/f gauge make sure its a wideband, those autometers are just a gay light show

you have a chipped ecu... no need for the s-afc

playahwitgame

the only thing about the walbro, when you install it, your fuel pressure will go up 10-15 psi

wantboost

iTrader: (2)

which isnt really bad. higher fp = less injector duration, better fuel atomization.
id get an adjustable fpr just incase

ella94

that pump was made for a 160 flywheel engine. not for a boosted engine making over 200 flywheel. ditch the pump asap.

JeDiMaster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ella94 &raquo;</TD></TR><TR><TD CLASS="quote">that pump was made for a 160 flywheel engine. not for a boosted engine making over 200 flywheel. ditch the pump asap.</TD></TR></TABLE>

http://www.prostreetonline.com...pumps/

''These 255 liter-per-hour fuel pumps are conservatively capable of supporting over 640 HP in naturally aspirated motors, and over 530 HP in forced-induction applications.''

wantboost

iTrader: (2)

he was talking about the stock pump

JeDiMaster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost &raquo;</TD></TR><TR><TD CLASS="quote">
id get an adjustable fpr just incase</TD></TR></TABLE>

Yeah I was thinking I might need to get one, thanks for the tip

wantboost

iTrader: (2)

no problem. its what im here for

JeDiMaster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by wantboost &raquo;</TD></TR><TR><TD CLASS="quote">he was talking about the stock pump</TD></TR></TABLE>

oh, for me.

wantboost

iTrader: (2)

lol

playahwitgame

get an adjustable fpr. when i first got my fpr, i bumped it up like 3-4 psi. i got a cel with code p0132 which is oxygen sensor high voltage aka richhhhhhh. get the fpr then put the pump in, if you dont you will be wastin gas

JeDiMaster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by playahwitgame &raquo;</TD></TR><TR><TD CLASS="quote">get an adjustable fpr. when i first got my fpr, i bumped it up like 3-4 psi. i got a cel with code p0132 which is oxygen sensor high voltage aka richhhhhhh. get the fpr then put the pump in, if you dont you will be wastin gas</TD></TR></TABLE>

So I assume if I put my s-afc in I couldnt turn the fuel down a little?

althougth I am getting the fpr now

wantboost

iTrader: (2)

you wouldnt need to, just reburn the chip.

playahwitgame

im not sure about the afc, but then ude be adjusting pulse width rather then pressure. i don tknow man, but for me, i personally would rather mess with something mechanical rather then electronic

JeDiMaster

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by playahwitgame &raquo;</TD></TR><TR><TD CLASS="quote"> i personally would rather mess with something mechanical rather then electronic</TD></TR></TABLE>

Yeah you got a point

Anyway until I put the walbro in I assume it would be ok to drive my crx gently eg changing gear before boost comes in and accelerating very gently?

JeDiMaster

hey Im going to try and install a walbro 255 fuel pump, ive found a write up about it so thats all good, but I am a bit unsure about taking the fuel tank off, anyone know of any write ups about it?
Ive found the bolts to take it off but I dont know what fuel lines to disconnet?

any help will be really appreciated!

thanks

spooncivic1

my best friend has made over 300whp on a stock 92-95 DX fuel pump. on 2 different setups with no problems

so if anything you could always just get a gsr/si/itr fuel pump.