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Thread: 450r locked up

  1. 10-30-2005, 06:14 PM #1
    mx450r99
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    450r locked up

    Well today i was racing in my first race But then the next thing u know i jumped and the other guy moved over while i was in the air.

    I landing on his tire and nerf we got jammed together....so here comes the second moto im doing good 3rd place with a pretty good lead on the fourth place guy....next thing u kno my quad stalls and locks up.....so i torn it down tonight and i found out that my main bearing in my crankshaft froze or locked up.....i had oil in it and everything....Now my piston sleeve is knicked up pretty bad so i have to bore it out and get a bigger piston.


    what would of caused that?

    Any help?

    -bob-


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  2. 10-30-2005, 06:36 PM #2
    DaleJrFan
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    man that sucks, how many hours do you think you have rode it before this happened? hopefully you got that honda extended warranty. i dont know what would cause that happen.
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  3. 10-30-2005, 06:36 PM #3
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    wvspeedfreak
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    What year is your quad?I have heard of some 05's doing this but it is usually within the first 10 hours.
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  4. 10-30-2005, 06:48 PM #4
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    brian-250
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    Originally posted by wvspeedfreak
    What year is your quad?I have heard of some 05's doing this but it is usually within the first 10 hours.

    I think it was within the first 10mins but i could be wrong?
    [b]
    Brian Casey

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  5. 10-30-2005, 06:52 PM #5
    Got nads?
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    No way, my 45oR locked up today too!
    My motor has a lot of hours from motocross, trail riding, and duning though! Still makes me mad cause I was haulin *** today and let my brother's girfriend ride it for like 10min and that was it!
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  6. 10-30-2005, 07:09 PM #6
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    TheFontMaster
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    Originally posted by wvspeedfreak
    What year is your quad?I have heard of some 05's doing this but it is usually within the first 10 hours.
    That was the first thing I thought of too. For some reson for the 05's honda used a cheaper crank berring, and I have hear of quite a few people having problems with them.
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  7. 10-31-2005, 01:45 PM #7
    mx450r99
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    Ya that is weird cuz i have alot of motocross, trail riding and winter riding on my quad
    I also rebuilt this thing 3 times since i had it and yeah its an 05 so i dont have a clue 2 what did it.

    Also before this happened i had 4 laps of practice on it and then i had like 1/2 lap the 1st moto and like 3 done on my 2nd moto and then it happen. It scratched my walls up badly and my piston so now i have to bore it out and get a new crank.
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  8. 11-01-2005, 06:45 PM #8
    mx450r99
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    I have a question now......Can i bore and stroke my quad?

    And if i can does anyone kno a good site or someone to order that off of?
    450r
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  9. 11-01-2005, 07:22 PM #9
    prepracing
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    Originally posted by mx450r99
    Ya that is weird cuz i have alot of motocross, trail riding and winter riding on my quad
    I also rebuilt this thing 3 times since i had it and yeah its an 05 so i dont have a clue 2 what did it.

    Also before this happened i had 4 laps of practice on it and then i had like 1/2 lap the 1st moto and like 3 done on my 2nd moto and then it happen. It scratched my walls up badly and my piston so now i have to bore it out and get a new crank.
    what do you run in this for lubrication ? dirty water ?
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  10. 11-02-2005, 06:04 PM #10
    haydug
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    Originally posted by mx450r99
    I have a question now......Can i bore and stroke my quad?

    And if i can does anyone kno a good site or someone to order that off of?

    Have you looked at the falicon billet crankshaft yet?? NICE!!
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