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engine mod help

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  • #1

    engine mod help

    Hi guys-
    need some help and advise please

    i recently built a 2 ltr 16v motor with high comp pistons - throttle bodies- head and cam job-

    KW output on the front wheels was 145

    i have just sold that motor and now building a 2 ltr 8v

    what need help on is what piston can i use to get the compression up and to make good power

    the head is gas flowed and ported and the cam is cut to 288 deg.

    some help please

    thanks
    Tags: None
  • #2
    Why are you going backwards?
    Widebody Cayman S Turbo, 83 ur Quattro
    2000 996 C4 cab,12 Scirocco R OEM+ STG2+
    72 914 (3.2S boxster pwr), 92 G60 Corrado
    76 Scirocco(TFSI and DSG) 2018 Tiguan,Eureka,81 924.

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    • #3
      Im wondering that myself.. why drop the 16v for an 8 valve?
      76 MkI 3 door - daily drive/project - 1.8 5speed
      76 MkI 3 door swallowtail - 16v track car
      76 MkI 3 door "long term" project

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      • #4
        Originally posted by aprr32 View Post
        Why are you going backwards?
        Funniest thing I have seen on for the last 12 months! Nice one.
        MK1 floG soon to have 16v 2L with cable change gbox - need a 16v turbo manifold

        "Fit the gearbox ya bum." Loon - best post ever!

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        • #5
          R u going to be running pump full? Fuel injectored or cardbies?

          Bit more info... Oh and BTW backwards step

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          • #6
            Hey dude,

            You are much better off to deck the head rather than use high comp pistons.

            The domed crown tends to cause detonation because it causes the flame to burn towards the outer edge of the cylinder.

            Use standard pistons and talk to an engine shop about taking a bit off the head. They can work out how much is needed to be taken off.

            If you want to run pump fuel, i'd suggest not going any more than 11.5/1 comp.

            Why an 8v though? I mean seriously.

            APR Tuned | KW Suspension | INA Engineering | Mocal Oil Control |
            Website: http://www.tprengineering.com
            Email: chris@tprengineering.com

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            • #7
              Say u get the head skimmed what are the options then if u want to go turbo? Does that mean custom pistons (rather then off the shelf stuff) will have to be the way to go then?

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