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Walbro 255

Discussion in 'Turbo Tech Questions' started by chameleon, Nov 13, 2008.

  1. chameleon

    Joined:
    Mar 12, 2007
    Bought 2 pumps today thinking they were Walbro 255's. Come to find out they are rated @ 190lph! :bang: I bought 2 of them to go on my 413ci bb street car w/an 88mm. I will be running b/w 10-15 lbs of boost maybe 800-1000hp. I found a chart showing that these 190lph pumps will supply 55gph @ 10psi where the 255lph pump will supply 75gph @ the same pressure. Would these pumps be safe for my goal?? :2thumbs:
     
    chameleon, Nov 13, 2008
    #1

  2. Andy Dorsett

    Joined:
    Jun 23, 2003
    At 10psi of boost the fuel pump will be 10psi above the bas fuel pressure. This will be around 50psi. 800Hp would be pushing it and 1000Hp is a definate no.
     
    Andy Dorsett, Nov 13, 2008
    #2

  3. BottleFed70

    Joined:
    Sep 7, 2006
    I agree. 400hp per pump MAX.
     
    BottleFed70, Nov 13, 2008
    #3

  4. xr8tt

    Joined:
    Feb 14, 2003
    I'm runing two Bosch 044 inline...
    Check the pressure the flow numbers are bassed on ??
    Some are 3 bar others 5 bar..
    You may have to change the pumps to proper 255 or bigger pumps...
    I have a one way valve on each pump..
     
    xr8tt, Nov 14, 2008
    #4

  5. aod92

    Joined:
    Nov 29, 2006
    This is the correct part number for Walbro 255's Walbro GSL392
     
    aod92, Nov 14, 2008
    #5

  6. chameleon

    Joined:
    Mar 12, 2007
    Swapped the 190's for 255's like I originally planned. This is a new setup that I had Bosch 420's on. If anyone doesnt know, metal shavings WILL fubar Bosch 420 fuel pumps. NEVER EVER run your pumps without filters before the pumps :bang:! I didn't have them on there just yet and wasn't in a big hurry b/c the whole fuel system including tank was new. BUT, I decided to do some work and drilling in the trunk while I had the pickup out of the tank. Bad decision....!? :doh:
     
    chameleon, Nov 15, 2008
    #6

  7. Djstorm100

    Joined:
    Nov 17, 2008
    so if you get walbro the one to get is a the gs392?
     
    Djstorm100, Nov 18, 2008
    #7

  8. BigTurboNotch

    Joined:
    May 4, 2006
    that is the 255 inline yes.
     
    BigTurboNotch, Nov 18, 2008
    #8

  9. chameleon

    Joined:
    Mar 12, 2007
    I went with the GSL392's and they seem to do the job. Went to the track Sun. and made 12lbs of boost and didn't seem to run out of fuel. :2thumbs:
     
    chameleon, Nov 19, 2008
    #9
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