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  1. #1
    PWCToday Newbie
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    Safe to run this cylinder head?

    IMG_5848.JPGIMG_5847.JPGIMG_5846.JPG Kawasaki js650 that had a piece of a cylinder wall broken off and smashed into the head. First pic is before I cleaned it up with a dremel and some sand paper. Is it safe to run this head back on a totally stock Kawasaki x2 650?

  2. #2
    Frequent Poster gabagool984's Avatar
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    Re: Safe to run this cylinder head?

    Iíd just spend the $60-80 and send it to Newmiller for milling. Itíll bump your compression and wake the 650 up too. Thatís just me though.


    Sent from my iPhone using Tapatalk

  3. #3
    PWCToday.com Is My Home Away From Home Bruce in SB's Avatar
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    Re: Safe to run this cylinder head?

    My guess is he won't touch it ... would probably ruin his cutter.
    "Thanks" to Chris Newmiller @ Newmiller Machine

  4. #4
    PWCToday.com Is My Home Away From Home fastgtfairlane's Avatar
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    Re: Safe to run this cylinder head?

    yeah id say that head is done. another head shouldnt be hard to find.
    91 440; PJS Viper 7000, jetsport exhaust mani, factory full pipe, coffman waterbox,solas 17*, jetco worked 440 pump, ocean pro nozzles. shredmaster ocean rideplate and grate combo, wide tray, footholds, deep strake mod, driveshaft fill,650sx quick turn

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  5. #5
    I dream skis
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    Re: Safe to run this cylinder head?

    If Newmiller is using a carbide cutter he should not have a problem cutting it. P.M. him

  6. #6
    PWCToday.com Is My Home Away From Home john zigler's Avatar
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    Re: Safe to run this cylinder head?

    Left as is, that will cause detonation. Do not run it.

    I doubt that Chris would touch it. Ask him, and send pics before sending it to him.
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  7. #7
    I dream skis
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    Re: Safe to run this cylinder head?

    If Newmiller won't do it P.M. me.

  8. #8
    PWCToday Regular Dave in DE's Avatar
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    Re: Safe to run this cylinder head?

    there is one on Ebay for 30 bucks plus shipping thats looks in better shape from pics. may still need to plane it though to true it up.

    https://www.ebay.com/itm/Kawasaki-65...ZZ-iN5&vxp=mtr
    Last edited by Dave in DE; 01-26-2018 at 12:00 AM.

  9. #9
    I dream skis
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    Re: Safe to run this cylinder head?

    That's not a good head.Deto!

  10. #10
    Resident Guru bored&stroked's Avatar
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    Re: Safe to run this cylinder head?

    Oh HELL NO
    Last edited by bored&stroked; 01-26-2018 at 07:25 PM.
    '90 Superjet: ported 760, dual 44's, B pipe, ADA head 190psi, TDR waterbox, hooker 10-16, sponsons. Girlfriends ride
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