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  1. #1
    tobbe tobbe sweden's Avatar
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    The Big engine failure thread

    Those of you who have experienced engine failure what happened?
    Can you describe what happened to your engine.
    What was it that broke?
    and how much you rev your engine at the moment.
    Was it because the connecting rods were too weak
    or to a valve showed

    Write it down so you get some data
    and how you can tell which part is causing the crashes


  2. #2
    RichieFZR's Avatar
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    Popped engine.... which one? LOL

    Ive got 3 ash tray pistons at home. The 4th is still at the engine shop.

    BoOM!!!!!

    There is alot of different weak links to the SHO motor when your pushing BIG HP!

    Best advice, get a knock box. Its next on my list of things to buy before hitting the water.
    Last edited by RichieFZR; 06-02-2011 at 04:36 AM. Reason: .

  3. #3
    FZR AD's Avatar
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    We have a 2009 FZR with Stage 1 only. $7k repairing cost.

    I cant mention all the damaged parts, but the main ones were Drive Shaft, Rods, Cranck, Pistons, Sleeves, Head .....etc

    We still dunno why this happened, but the problem started at the Drive Shaft first then moved to the rest of the engine ...

  4. #4
    RichieFZR's Avatar
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    Quote Originally Posted by FZR AD View Post
    We have a 2009 FZR with Stage 1 only. $7k repairing cost.

    I cant mention all the damaged parts, but the main ones were Drive Shaft, Rods, Cranck, Pistons, Sleeves, Head .....etc

    We still dunno why this happened, but the problem started at the Drive Shaft first then moved to the rest of the engine ...
    It would've started from the crank. I did that on my stock motor. The Crank moves at high RPM. took out of the main bearings had to throw the crank and bearings away.... the SHO motor with big power (Stock motor) leans to the left. the crank eats away..... My new motor runs stronger engine mounts (Custom) and a shorter drive shaft to get around this problem.

  5. #5
    97modman's Avatar
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    Quote Originally Posted by FZR AD View Post
    We have a 2009 FZR with Stage 1 only. $7k repairing cost.

    I cant mention all the damaged parts, but the main ones were Drive Shaft, Rods, Cranck, Pistons, Sleeves, Head .....etc

    We still dunno why this happened, but the problem started at the Drive Shaft first then moved to the rest of the engine ...
    Stage 1??? WTH!! I thought that stage was suppose to be safe with under 260hp?? Now that scares me a bit..

  6. #6
    Kristian Keppel Waterholics's Avatar
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    Quote Originally Posted by FZR AD View Post
    We have a 2009 FZR with Stage 1 only. $7k repairing cost.

    I cant mention all the damaged parts, but the main ones were Drive Shaft, Rods, Cranck, Pistons, Sleeves, Head .....etc

    We still dunno why this happened, but the problem started at the Drive Shaft first then moved to the rest of the engine ...

    That definitely sounds like a user error because there are people I know of doing 100+ hrs on a stage 3 and 500+ on stock engine. I had a hefty repair bill with my ski. Valve floated and damaged the head, destroyed cams and damaged four of my valves. Should be getting new head this week and motor back up and running by next week

  7. #7
    STALKER FZR's Avatar
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    Subscribing

  8. #8
    tobbe tobbe sweden's Avatar
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    Quote Originally Posted by RichieFZR View Post
    It would've started from the crank. I did that on my stock motor. The Crank moves at high RPM. took out of the main bearings had to throw the crank and bearings away.... the SHO motor with big power (Stock motor) leans to the left. the crank eats away..... My new motor runs stronger engine mounts (Custom) and a shorter drive shaft to get around this problem.
    Richie, when you say high revs how much is it? over 9000rpm
    on an original bottom !
    or with a balanced crank

  9. #9
    RichieFZR's Avatar
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    Quote Originally Posted by tobbe sweden View Post
    Richie, when you say high revs how much is it? over 9000rpm
    on an original bottom !
    or with a balanced crank
    My stock motor that run 86.5mph all day till the day it Popped.... it limiter was set at 8700rpm

  10. #10
    PTO bearings every seal on the crank had the spring missing. SBT?

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