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  1. #1
    Boost addict hotbird's Avatar
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    I need to know how to check for a bent rod before tommarow!!! HELP!

    I'm building a 06 rxt motor that broke a timing chain.
    Timing chain broke
    9 flywheel teeth broke
    10 valves bent.

    I am installing new bolts, gaskets, timing chain, valves, flywheel.
    I want to get it running tomorrow but need to know how to check for a bent valve.
    A sea doo mechanic told be to check that 1 piston was at TDC every 120 deg of crank rotation. I did that but it seems to me that if a rod was bent it would still read like that?? also I checked the piston height to the deck and all 3 pistons where with in 3-4 thousandths of each other.
    I think they are ok but would like to make sure!

    How Do I know for sure they are good? or do I just wait for the bang at 8000 rpm??

    Thanks!


  2. #2
    83.0 @ 8400 jhill19's Avatar
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    Do u have a caliper? Make sure it's within spec.

  3. #3
    Nothin' better than Doo'in it! BigDaddyRXP's Avatar
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    If in question...... have them checked thoroughly, or REPLACE!!!

  4. #4
    Boost addict hotbird's Avatar
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    Can they be checked inside the short block? or do they need to be removed?

  5. #5
    Boost addict hotbird's Avatar
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    has anyone ever bent a rod when they lost a timing chain??

  6. #6
    Boost addict hotbird's Avatar
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    bump ttt

  7. #7
    suck my wake's Avatar
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    There is really no way to know for sure unless you visually check them out, like in your hand....compare them side by side and take measurements with a caliper. Otherwise your just going to take your chances, There is no other way so stop looking for short cuts, they do not exist!!!!!

  8. #8
    gp1200rider's Avatar
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    Did you take apart the oil pump's and look for damage mine were trashed after the chain broke tore up inside and mine was just idling when it broke.

  9. #9
    Boost addict hotbird's Avatar
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    Yea flushed the pan/motor pulled the screens and pumps.

    I'm not really looking for a short cut I just did not know how for sure to check them.
    but yes if there was a easy way then I would be all for that. I sounds like there is not a easy way.

  10. #10
    Boost addict hotbird's Avatar
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    If one got bent that one would be shorter. so the piston at TDC would be lower than the rest.

    But I will pull apart and check them all out.

    Thanks for the help!

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