Walbro 255 return pump in a returnless system - SRT Forums

Vector · 11-02-2004, 02:26 AM

Ok just reading over you upgrades and some of the things you have listed for different setups and i see you are using a walbro 255 in a returless system

i was just wondering if you are aware that i a returnless system these pumps have been known to fail and cause some driveability and tuning problems

this pump has been tried in 99 mustangs and up returnless systems and has always had short coming

does the srt-4 returnless system work different

how come mopar did not use such a easy to get ahold of pump but rather had a better returnless pump for the stage 3 upgrade?

also Walbro pumps are positive displacement.
are the stock pumps turbine style..?

thanks for any info you may have

there is a far better pump out there now that is returnless incase you did not know

Vector

Vector · 11-02-2004, 11:35 AM

bump for the day crew

BigWoody · 11-02-2004, 01:31 PM

Umm Vector the Stock SRT pump is infact a walbro pump.. The style looks the same and all to my 255 I just installed. Just a higher volume pump that is all.

Vector · 11-02-2004, 01:45 PM

do you have a picture of the stock pump woody

also how do you know its a walbro?

thanks agian man

Vector

unless your 100% sure... all the returnless style pumps i have seen look almost like a perfect match to a walbro 255

BigWoody · 11-02-2004, 01:51 PM

I have the pump at the house.. It has Walbro written on the pumps housing hehehe.. I can see if I can find it in the box and take a picture of it. no one has been able to confirm what the volume of the pump is but I have heard in the range of like 195.

Lucille · 11-02-2004, 02:19 PM

Quote: Originally Posted by BigWoody

I have the pump at the house.. It has Walbro written on the pumps housing hehehe.. I can see if I can find it in the box and take a picture of it. no one has been able to confirm what the volume of the pump is but I have heard in the range of like 195.

stock pump cannot be in the 195 lph range when the new stage 3 pump is only 180 lph..... obviously, stock pump is lower then 180.

Vector · 11-02-2004, 02:39 PM

Quote: Originally Posted by Lucille

stock pump cannot be in the 195 lph range when the new stage 3 pump is only 180 lph..... obviously, stock pump is lower then 180.

hey lucille get a A+ for paying attention

Vector · 11-02-2004, 02:40 PM

Anyone that has replaced there stock pump can you take a picture of it

NIVO88T · 11-02-2004, 02:43 PM

LOL..stock pump looks just like the Replacement walbro 255lph unit.

Vector · 11-02-2004, 03:12 PM

Quote: Originally Posted by NIVO88T

LOL..stock pump looks just like the Replacement walbro 255lph unit.

ok but what are they?...

dasmopar · 11-02-2004, 11:38 PM

Has anyone had any trouble using a walbro 255 in there returnless system ? Any walbro 255's gone bad ? The Vector breings food for thought to the table.

NeonDan · 11-02-2004, 11:41 PM

we have one on the way for my friend's returnless car so if no one gets a concrete answer i'll post pics...etc

Dark-SRT4 · 11-02-2004, 11:45 PM

the stock system still has a FPR in it and it still returns unwanted fuel back to the tank, its just that the FPR is IN the tank. Unless AGP set it up differently, its still 'returning' the fuel, just not from the fuel rail.

dasmopar · 11-02-2004, 11:49 PM

Quote: Originally Posted by Dark-SRT4

the stock system still has a FPR in it and it still returns unwanted fuel back to the tank, its just that the FPR is IN the tank. Unless AGP set it up differently, its still 'returning' the fuel, just not from the fuel rail.

Wow!!! I didn't know that. Are you sure on this? If so, Walbro me.

SRT4B · 11-02-2004, 11:56 PM

Quote: Originally Posted by dasmopar

Wow!!! I didn't know that. Are you sure on this? If so, Walbro me.

yes, the fuel dumps back into the tank, how do you think the pressure stays @ 58psi?

it's the same setup on all DCx vehilces and the Gen1 neons.