Announcement

Collapse
No announcement yet.

Bosch 044 or Walbro 400 with E85 setup

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Bosch 044 or Walbro 400 with E85 setup

    Hi guys, I'm planing to burn E85 fuel in my 20vt s2 and I have a question about the fuel pump, It's enought or I need to change it for another one like a Walbro 400 E85?

    I have a 044 fuel pump (feed from batery), stock fuel lines and I'm going to buy 750cc injectors @ 3bar, I will fit a 3bar FPR. Boost will be around 2/2.2bar (it's a garret hybrid turbo with compressor/turbine wheels like a gt 3076 also different blade numbers). I'm going to buy a ecu master emu with the adapter for the motronic connector.

    750cc @ 3bar x 5 injectors = 3750cc/min = 3,75 L/min
    820cc @ 3,5bar x 5 injectors= 4,1 L/min
    880cc @ 4bar x 5 injectors = 4,4 L/min

    bosch 044 @ 5bar = aprox. 240 L/h so 4 L/min
    bosch 044 @ 5.5bar = 235 L/h so 3,9 L/min
    bosch 044 @ 6bar = 230 L/h so 3,8 L/min

    Are right these numbers?

    Bosch or a new Walbro?? I think that my bosch will be on the limit with E85 and 5bar.....5.5 and 6 bar it's out

  • #2
    feul pump

    hi
    you can also use the AEM inline 380 lph
    it has the same sizes as the 044 but flows a lot more
    and i good for e85

    Comment


    • #3
      Bosch pumps are very good at high pressure, I think it'll be fine.

      The ONLY S2 Golf!
      http://www.s2forum.com/forum/showthread.php?t=19402
      10.42@138mph
      https://m.youtube.com/watch?v=0wnkkOfFpXg

      Comment


      • #4
        Originally posted by peter20vt View Post
        hi
        you can also use the AEM inline 380 lph
        it has the same sizes as the 044 but flows a lot more
        and i good for e85
        After the fuel filter to have a litle fuel reservoir ??

        Originally posted by gnutz2 View Post
        Bosch pumps are very good at high pressure, I think it'll be fine.

        I saw other numbers for the bosch less optimistic...I don't know what is wrong or right



        Comment


        • #5
          That radium test was done on a bench with no fuel lines or associated parts, just a control orifice to vary pressure and then measure the flow. What it does do is give a direct comparison from pump to pump whereas the graph you posted quotes differing voltages on some of the pumps, hence it's a little misleading.

          http://www.radiumauto.com/Blog/Post/...-Pump-Test-100

          The most accurate way of measuring fuel flow would be to do a test on the car, remove the return line to the tank and place in a bucket, set the fuel pressure to max you'll see (base + full boost), run the pump at full alternator voltage and record the flow.
          The ONLY S2 Golf!
          http://www.s2forum.com/forum/showthread.php?t=19402
          10.42@138mph
          https://m.youtube.com/watch?v=0wnkkOfFpXg

          Comment


          • #6
            you could also try the new Walbro E85 460lph
            Im using that in my setup

            or they made an older E85 450lph but it had a lower pressure relief valve
            Current:
            1993 Audi S2 Kingfisher Blue - GTX3582r w/ E85 = 430kw atw

            Past:
            2002 Audi S4 Nogaro Blue Stage 3+ - 250kw+ atw
            2001 Audi S3 Silver - 169kw+ atw

            Comment


            • #7
              Originally posted by gnutz2 View Post
              That radium test was done on a bench with no fuel lines or associated parts, just a control orifice to vary pressure and then measure the flow. What it does do is give a direct comparison from pump to pump whereas the graph you posted quotes differing voltages on some of the pumps, hence it's a little misleading.

              http://www.radiumauto.com/Blog/Post/...-Pump-Test-100

              The most accurate way of measuring fuel flow would be to do a test on the car, remove the return line to the tank and place in a bucket, set the fuel pressure to max you'll see (base + full boost), run the pump at full alternator voltage and record the flow.
              Thanks for the link! I agree with you, the best way to know how it flows on my car it's like old school, all affect the flow even the fuel filter brand... I need a FPR regulator with gauge and starts other car behind mine with the same voltage, put a battery clips betwen both cars to feed my fuel pump ( it works with a switch, not with the motronic signal...also you can bridge the FP relay...but it's easier on my car ), and one of my s2 customers will come soon to change the timing belt kit... so 1' @ 5bar and a 5L bottle connected to the return pipe, will be enough to make me an idea

              Originally posted by momento1 View Post
              you could also try the new Walbro E85 460lph
              Im using that in my setup

              or they made an older E85 450lph but it had a lower pressure relief valve
              Thanks mate, first I'm going to check mine, because has less than 3000km...maybe has 2/3 years but it's new and good installed in the fuel tank

              Comment


              • #8
                Does anyone knows are original fuel pump buckets interchangeable among themselves B4, C4 ,B5 ,C5. example can I install C5 bucket to B4?

                Comment

                Working...
                X