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  4. E30 Fuel System Upgrade Ideas

E30 Fuel System Upgrade Ideas

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  • DrLeadFootD
    DrLeadFootD
    DrLeadFoot
    wrote on last edited by
    #1

    I have started to think about really upgrading my fuel system.  I began this to get your input and have a running log of what is going through everyones brains.

    Has anyone seen a setup like this for an e30?  I can only find e36 setups.  Custom and this one:

    http://www.rallyroad.net/content/rally-road-e36-bmw-dual-fuel-pump-hanger

    Ideally I would run dual 255 walbros in the tank.  Have 6AN fittings coming out and off of each pump.  Those two lines hook up to a T fitting with a 10AN fitting for the output line and run that to my fuel rail.  Which would be this one:  http://www.rallyroad.net/content/high-flow-billet-fuel-rail

    Questions:

    -Do you think running two filters on the 6AN lines would be better or one on the 10AN line?

    -Return line diameter either 10AN or 8AN to the FPR?

    15924991875a64c599885m.jpg

         @DrLeadFoot

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    • R
      R
      Rowleym
      wrote on last edited by
      #2

      Honestly, if i were you, I would run the stock pump to a surge tank(probably -6) And then have a bosch 044 feed the rail. I really think swirl pots help a whole lot, and it makes things easy as well. I would run a -6 return line to your FPR because thats what most of them are, and man, its your return line, you don't need it much bigger.

      96.jpg96.jpg96.jpg96.jpg

      sk8 or die

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      • DrLeadFootD
        DrLeadFootD
        DrLeadFoot
        wrote on last edited by
        #3

        Thanks for the info.  I currently have a 255 walbro in the tank.  Have that feed the surge tank?

        Or just incorporate this:  http://store.034motorsport.com/fully-enclosed-fp34-044-fuel-surge-tank.html

        15924991875a64c599885m.jpg

             @DrLeadFoot

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        • R
          R
          Rowleym
          wrote on last edited by
          #4

          Thats EXACTLY what I think you should do. I really like the product you found there! That will make for a super clean, High power setup.

          96.jpg96.jpg96.jpg96.jpg

          sk8 or die

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          • DrLeadFootD
            DrLeadFootD
            DrLeadFoot
            wrote on last edited by
            #5

            Run the stock set up to that thing then -6 lines everywhere else?

            15924991875a64c599885m.jpg

                 @DrLeadFoot

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            • R
              R
              Rowleym
              wrote on last edited by
              #6

              Well from after the surge tank, I would go to a 8an to the fuel rail, and then on the return side of the fuel rail, have a 6an line coming to your FPR, and then from the FPR, 6an line back to the surge tank. The surge tank probably also has a return to the stock tank.

              96.jpg96.jpg96.jpg96.jpg

              sk8 or die

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              • R
                R
                Rowleym
                wrote on last edited by
                #7

                Also, You would need to convert the stock feed line to 6an somewhere, whether it be at the stock tank or just before the surge doesn't matter.

                96.jpg96.jpg96.jpg96.jpg

                sk8 or die

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                • DrLeadFootD
                  DrLeadFootD
                  DrLeadFoot
                  wrote on last edited by
                  #8

                  Rowleym said:

                  Also, You would need to convert the stock feed line to 6an somewhere, whether it be at the stock tank or just before the surge doesn't matter. 

                  Why would I need to do this?

                  I have to do this fuel thing sooner than later.  The fuel pump took a dump I think.

                  15924991875a64c599885m.jpg

                       @DrLeadFoot

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                  • R
                    R
                    Rowleym
                    wrote on last edited by
                    #9

                    DrLeadFoot said:

                    Why would I need to do this?

                    I have to do this fuel thing sooner than later.  The fuel pump took a dump I think.

                    For the return from the surge tank. Hey will you be at spring green? I would love to shoot some ideas about surge tank placement/size. I would love to have some of my work on your car sir :)

                    96.jpg96.jpg96.jpg96.jpg

                    sk8 or die

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                    • DrLeadFootD
                      DrLeadFootD
                      DrLeadFoot
                      wrote on last edited by
                      #10

                      Rowleym said:

                      For the return from the surge tank. Hey will you be at spring green? I would love to shoot some ideas about surge tank placement/size. I would love to have some of my work on your car sir :)

                      I will not be able to make it. 

                      Back to the pumps:

                      Here is the pump I'm going to get.  I might run 2 of these.

                      http://store.034moto...surge-tank.html which would run in tandem but as an external pump.  These would both be running all the time.

                      This would be easier and should work just fine.

                      15924991875a64c599885m.jpg

                           @DrLeadFoot

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                      • B
                        B
                        B C
                        wrote on last edited by
                        #11

                        im not a fan of dual pumps running in parallel like you would with the hobbs switch, 

                        Id rather not run dual pumps in series, but thats an easy way to go about it

                        If it were me, I would have 1 very high flow pump and just let your fuel pressure regulator deal with it.

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                        • R
                          R
                          Rowleym
                          wrote on last edited by
                          #12

                          Yea If going in tank route definitely just do the simple way and just get a damn good in tank pump. One and done. How much power do you even plan on making and what fuel?

                          96.jpg96.jpg96.jpg96.jpg

                          sk8 or die

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                          • DrLeadFootD
                            DrLeadFootD
                            DrLeadFoot
                            wrote on last edited by
                            #13

                            Pat Kummrow said it's getting fuel and spark. It might be an ecu issue. #sketch

                            Sent from my SCH-I535 using Tapatalk

                            15924991875a64c599885m.jpg

                                 @DrLeadFoot

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                            • KaiserRollsK
                              KaiserRollsK
                              KaiserRolls
                              wrote on last edited by
                              #14

                              DrLeadFoot said:

                              Pat Kummrow said it's getting fuel and spark. It might be an ecu issue. #sketch

                              Sent from my SCH-I535 using Tapatalk

                              #megasquirt

                              Mr. Leadballs

                              1 Reply Last reply
                              1
                              • B
                                B
                                B C
                                wrote on last edited by
                                #15

                                il570xN.240095507.jpg

                                ...For squirts,  or some sort of OBD-2 tuning system. 

                                You have quite a bit of untapped potential

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