Author Tune Kawasaki Z H2 gone wrong?  (Read 3851 times)

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  • Offline iowa2933   es

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    Offline iowa2933

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    Tune Kawasaki Z H2 gone wrong?
    on: October 22, 2023, 12:33:08 pm
    October 22, 2023, 12:33:08 pm
    Hello, I am new to the forum. I have registered because I have seen that some colleagues have had similar problems. I did a flashto my kawasaki zh2. When I took it out of the workshop I did about 200 km when it began to make a strange noise and was smoking. after a while in the workshop, they tell me that the problem is the manufacture of the piston. Do I have to complain to Kawasaki, is this true? or is it the fault of the flash? Thanks



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  • Online Snakes709   ca

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    Re: Tune Kawasaki Z H2 gone wrong?
    Reply #1 on: October 22, 2023, 05:25:50 pm
    October 22, 2023, 05:25:50 pm
    Looks more like a bad tune. Who is flashed it? Have they worked on the zh2 before?

  • Online harry76   us

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    Re: Tune Kawasaki Z H2 gone wrong?
    Reply #2 on: October 22, 2023, 06:14:56 pm
    October 22, 2023, 06:14:56 pm
    My guess would be detonation cracked the ring lands on the piston.
    Result of being to lean, did you ride it after making exhaust changes but before having it tuned?
    It could have happened during the dyno session or after if it was not tuned correctly.
    There haven't been many issues with these motors.

  • Offline iowa2933   es

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    Offline iowa2933

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    Re: Tune Kawasaki Z H2 gone wrong?
    Reply #3 on: October 22, 2023, 06:20:42 pm
    October 22, 2023, 06:20:42 pm
    *Originally Posted by harry76 [+]
    My guess would be detonation cracked the ring lands on the piston.
    Result of being to lean, did you ride it after making exhaust changes but before having it tuned?
    It could have happened during the dyno session or after if it was not tuned correctly.
    There haven't been many issues with these motors.

    Before doing the flash I had the sc project exhaust, headers and filter installed, after 1 year I did the flash

  • Offline Zoommi   ca

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    Re: Tune Kawasaki Z H2 gone wrong?
    Reply #4 on: October 22, 2023, 07:01:56 pm
    October 22, 2023, 07:01:56 pm
    *Originally Posted by iowa2933 [+]
    Before doing the flash I had the sc project exhaust, headers and filter installed, after 1 year I did the flash
    So you were running a full exhaust system , and a air filter for a full year before you decided to get a tune ? :005: :005: :005:
     That bike mustve ran lean for such long time  :019:
    I dont want to point to tuner fault (maybe it is ? ) BUT I feel like with a supercharged motor with a lean condition for so long , you mustve been riding around on a ticking time bomb , that maybe? the extra power from the tune removed the last couple seconds on the timer  :084:

    Time for a built motor ?  :007:

     :821:
    Last Edit: October 22, 2023, 07:22:54 pm by Zoommi

  • Online Snakes709   ca

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    Re: Tune Kawasaki Z H2 gone wrong?
    Reply #5 on: October 22, 2023, 07:13:14 pm
    October 22, 2023, 07:13:14 pm
    *Originally Posted by iowa2933 [+]
    Before doing the flash I had the sc project exhaust, headers and filter installed, after 1 year I did the flash

    Hate to be blunt, but you messed up. You cant ride a year with a full exhaust and air filter without a proper tune. It likely weakened the motor and then whoever did the flash, finished it off. Bottom line is, this isnt Kawasaki’s fault and if you go to them and complain, they are just gonna laugh at you.

  • Offline ESR   be

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    Offline ESR

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    Re: Tune Kawasaki Z H2 gone wrong?
    Reply #6 on: October 22, 2023, 11:01:16 pm
    October 22, 2023, 11:01:16 pm
    As already said before....no warranty in this case, that's a certainty.

    Detonation happens in a fraction of a second......one misfire can be enough with charged engines, another possibility....they mess with the ignition timing, fuel quality can also be in the game......
    With a compression ratio of more than 11:1, you better be cautious when flashing or tuning whatever.....
    Seems a very "knowledgeable" tuner....sarcastic said.
    Most of these so called tuners/flashers have no clue what happens inside, there are only a handful around the world who know what they are doing and will prevent what happens to your zh2.

    Last Edit: October 22, 2023, 11:02:20 pm by ESR

  • Offline iowa2933   es

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    Offline iowa2933

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    Re: Tune Kawasaki Z H2 gone wrong?
    Reply #7 on: October 23, 2023, 08:06:07 am
    October 23, 2023, 08:06:07 am
    He has been checking everything and says that where the piston was broken is all correct, the cylinder is fine with no damage, what would you do, replace only that piston or replace all 4?
    Last Edit: October 23, 2023, 08:08:57 am by iowa2933

  • Online Snakes709   ca

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    Re: Tune Kawasaki Z H2 gone wrong?
    Reply #8 on: October 23, 2023, 05:14:27 pm
    October 23, 2023, 05:14:27 pm
    *Originally Posted by iowa2933 [+]
    He has been checking everything and says that where the piston was broken is all correct, the cylinder is fine with no damage, what would you do, replace only that piston or replace all 4?

    Send your motor to Travis Yager in Florida and get him to do a full rebuild.