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  1. #1
    txgp1300r's Avatar
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    Offerings to the gods of speed

    Burnt this one last sat...#3...5000 rpm lean seizure..nosed over and died,but the ol yamaha started back up and limped me home.
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  2. #2
    Happily Self-Employed WFO's Avatar
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    Lot of that going around lately I guess.

  3. #3
    Hydrotoys's Avatar
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    The God-of-speed is a cold heartless bastard.

  4. #4
    WATER WOODY's Avatar
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    Ouch! thats a nasty one.Looks like #3 striked again.I just lost one a couple months ago.was the wrist pin hard to get out?

  5. #5
    Duke's Avatar
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    Notice all the deto due to the seizure...

    What causes the 1300s to eat the rear cylinder?

  6. #6
    WATER WOODY's Avatar
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    Timing
    heat
    incorrect EFI settings,your transfer pot from the low to high speed set with too much delay
    high compression
    running the sound supression in some cases

  7. #7
    Duke's Avatar
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    Quote Originally Posted by WATER WOODY View Post
    Timing
    heat
    incorrect EFI settings,your transfer pot from the low to high speed set with too much delay
    high compression
    running the sound supression in some cases

    Why does it not seem to effect 1 & 2 as much?

  8. #8
    WATER WOODY's Avatar
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    On 03-06 EFI boats,the timing stays the same across the board at all rpm.When you install a timing key,add compression,you are pushing things closer to the edge.Thats why some are dropping compression in #3,to decrease the chance of detonation.Its not like the 00-02 boats with the Advent CDI that allows you to program a custom timing curve at different rpms.High compression and alot of timing dont mix.

  9. #9
    Duke's Avatar
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    On the 00 to 02 boats the timing on #3 is several degrees less than
    1&2. Why would they not keep that for the newer models and what
    would cause this? The exaust manifold looks very semetrical and
    crank twist would actually retard the third cylinder.

  10. #10
    txgp1300r's Avatar
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    Quote Originally Posted by WATER WOODY View Post
    Ouch! thats a nasty one.Looks like #3 striked again.I just lost one a couple months ago.was the wrist pin hard to get out?
    yes the wrist pin was stuck, my efi was set on 6.6.2.6. and this is probably why it seized at 5000 rpm cruise..ran the piss out of it all summer with no problems...50 deg air and 30.09 barometer plus lean settings on efi probably contributed to this seizure........cylinder is ok after acid wash and a hone....we have the damm alcohol gas here also????10% ethenol?

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