42lb injectors for 350hp?

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  • CrazyPrime
    Wrencher
    • Jun 2014
    • 286

    #1

    42lb injectors for 350hp?

    Exactly what the title says will 42lb's be sufficient for 350whp?
  • ak-
    R3V OG
    • May 2009
    • 12422

    #2
    What motor?

    My 2.7L m20 is making that exact power right now on 42lbs till I fix a few things, but can't remember at what %.

    Oh yeah, don't cheap out on injectors. One of the big no-no's in F/I.

    1991 325iS turbo

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    • CrazyPrime
      Wrencher
      • Jun 2014
      • 286

      #3
      M20B25 stock except for oring and new stock HG

      Comment

      • E30SPDFRK
        Moderator
        • Jul 2007
        • 5687

        #4
        Will be fine unless you plan on running e85, in which case they'd be maxed out.
        Byron
        Leichtbau

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        • sayed ali
          Mod Crazy
          • Jan 2012
          • 762

          #5
          guess they'll be fine but sure on high % .. which is not good for future plans :)


          M20B28 Turbo

          My Build Thread

          http://www.r3vlimited.com/board/showthread.php?t=255839

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          • ForcedFirebird
            R3V OG
            • Feb 2007
            • 8300

            #6
            With pump gas, yes (not e85). I have found on 6cyl turbo engines, you add a "0" at the end of the injector lb/hr rating and that's about what HP you can get at the wheels. Have used 36lb/hr injectors often and have seen them go as high as 357whp ~90% duty.
            john@m20guru.com
            Links:
            Transaction feedback: Here, here and here. Thanks :D

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            • CrazyPrime
              Wrencher
              • Jun 2014
              • 286

              #7
              Is anybody using 42lb'ers and making 350whp and what % are they running? Just making sure I don't hit 100% duty..

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              • ForcedFirebird
                R3V OG
                • Feb 2007
                • 8300

                #8
                Originally posted by ForcedFirebird
                With pump gas, yes (not e85). I have found on 6cyl turbo engines, you add a "0" at the end of the injector lb/hr rating and that's about what HP you can get at the wheels. Have used 36lb/hr injectors often and have seen them go as high as 357whp ~90% duty.
                Originally posted by CrazyPrime
                Is anybody using 42lb'ers and making 350whp and what % are they running? Just making sure I don't hit 100% duty..
                If 36lb/hr can do 357whp at <90%, then you are plenty safe with 42's ;)
                john@m20guru.com
                Links:
                Transaction feedback: Here, here and here. Thanks :D

                Comment

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