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Thread: Pistons and cranks

  1. #1
    Senior Member ALO's Avatar
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    Need ideas.


    If I ran a J crank with KZ 10.25-1 pistons/block and a J head. Would that put the compression where it needs to be Or is there another alternative

  2. #2
    Senior Member funny1's Avatar
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    If you are talking about 10.25-1 street pistons--like wiesco or mtc ---the dome is not thick enough for a turbo application in my opinion

  3. #3
    Senior Member ALO's Avatar
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    I now have my crank.


    I need some advise on piston selection next. I have a Kawasaki Mark 2 crank, KZ
    big block and a J-head which is shaved .030. I am trying to decide what
    piston to use to achieve the correct compression for a turbo setup.
    Considering the J-head will drop compression, would I still use the KZ 82mm
    turbo piston or a higher compression piston and rely on the head to lower
    the compression enough I assume thicker base gaskets come into play now too.
    Edited by: Crunch

  4. #4
    Senior Member ALO's Avatar
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    bump


    anyone done this

  5. #5
    Senior Member funny1's Avatar
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    I ran MTC turbo flat tops at zero deck on my gas,efi,turbo,nitrous FB.ran the same pistons for over 4 yrs--sold it with them in it and he ran two more yrs on them.I ran both J and gpz heads.


    I stay away from real big bores--hard to keep round--the sleeves are thinner and distort worse.1395 is as big as I would go personally--and if you did mess up something the 1395 can be bored to 1425 without resleeeving.I used MTC power ring arrangement and loved it---zero failure.APE wrist pins.


    I used trick oil--pennzoil 10w 30 and trick plugs--NGK B9ESEdited by: funny1

  6. #6
    Senior Member ALO's Avatar
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    Thanks, that is the way I'm going.[img]smileys/smiley14.gif[/img]

  7. #7
    Senior Member ALO's Avatar
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    What is a typical price to bore a Kawy block and where is good to go Machine shops around me are stupid about bikes.

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