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Building M42 for boost

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    Building M42 for boost

    Building the motor up to with stand boost, target is roughly 300 whp. I want to over build the engine and am looking for opinions and suggestions as well as experiences with parts and pieces.

    #2
    M50 non vanos rods and stock pistons will work for that. ARP head bolts is a good idea as well.
    E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
    E30 M50 6 spd 764whp @ 24psi.
    E30 M20 6 spd 675whp.

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      #3
      300 RW is well over 2x stock- that'll take quite a lot of boost...

      t
      now, sometimes I just mess with people. It's more entertaining that way. george graves

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        #4
        Yes i know but i also know how fun my Jetta was at 300hp :)

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          #5
          running what fuel?

          stock rods, stock crank, lower cr pistons. put the rest of the money in the head, ms, and turbo. 300hp is reachable.

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            #6
            With M50 non vanos rods you will get lower cr, they are 5mm shorter than stock :)
            I built one for a friend.
            E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
            E30 M50 6 spd 764whp @ 24psi.
            E30 M20 6 spd 675whp.

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              #7
              MS was in my plans as well as lower cr pistons and mls head gasket. Put the money into the head as in port and polish? I've read also that some ppl use the vw rockers and upgraded springs...thoughts? Valve suggestions? Looking into cat cams as well

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                #8
                You dont need to touch the head for 300whp. Stock head gasket and ARP is enogh.
                E30 325ix M50 turbo 7 spd DCT 4wd 840awhp @ 31 psi.
                E30 M50 6 spd 764whp @ 24psi.
                E30 M20 6 spd 675whp.

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                  #9
                  ok great thanks guys :)

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