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    Re: Coolster 250 buggy
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    OH MAN! That blows.
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    Re: Coolster 250 buggy
    Keeper of the Asylum K-fab's Avatar
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    Warm it up and flog it! You broke it in right.

    I'm gonna guess the chain tensioner came/was loose and you've jumped a timing tooth or two.
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    Re: Coolster 250 buggy
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    I tore into the top end to find the engine had ingested too much muddy water which had cracked the piston and cylinder and scored the hell out of both This was a cheap ebay big bore kit that I installed before i ever started the engine so I still have the original piston, cylinder and gaskets. I'll have it put back together tonight. Now I gotta make an intake and air box that wont allow water to get into it again.







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    Re: Coolster 250 buggy
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    I hate to say it, but with that much damage, I would want to at least check the bottom end for debris and possible bearing damage..
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    Re: Coolster 250 buggy
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    Quote Originally Posted by LIDUNO View Post
    I hate to say it, but with that much damage, I would want to at least check the bottom end for debris and possible bearing damage..
    I'm really not wanting to spend any money on this engine. If it starts to thrash the bearings i'll run it until it doesn't run anymore. There's not very many replacement parts available for these cheap engines.
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    Re: Coolster 250 buggy
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    I hear ya, maybe just flush it out real good with some clean oil.

    By the way, I don't break shit in either..lol I wont keep a new engine revved out for long periods, but I will take it right to redline in every gear. Never had any issues.
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    Re: Coolster 250 buggy
    Keeper of the Asylum K-fab's Avatar
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    oooohhhh... That's broken. That looks like old Jet Ski seizure broken (something I was very familiar with years ago). Good job!
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    Re: Coolster 250 buggy
    Super Moderator rowycoracing's Avatar
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    Ouch! That thing got trashed. Good deal that you have the old parts!
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