Bottom end compatibility.
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Thread: Bottom end compatibility.

  1. #1
    Junior Member Atvtrailrider's Avatar
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    Bottom end compatibility.

    I just picked up a 2000 TW and was told it had bottom end problems. So I am looking for a new one. What years are compatible? What should I look for? Is there anybody that sells reman or rebuilt engines or bottom ends?

    Thanks Much

  2. #2
    Senior Member TW-Brian's Avatar
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    Hi and welcome to the forum!

    This is the first time that I have heard of bottom end problems on a TW! Top end problems? Yes, lots of those.

    I don't know about the availability of new or remanufactured bottom ends, but used ones are certainly abundant. I have at least 3 complete ones sitting on a shelf and almost all of the parts from a few more. Have you confirmed that it is the bottom end that is bad?

    Tell us if you have the tools and skills to tackle a rebuild by yourself (with our help, of course), and where you are located. There may be someone nearby who could help you out.

    Brian

    p.s. The good news is that the bottom ends of all TW's are the same, so you have 32 different model years to pick from (but hang on to your kickstarter, you'll want it if you use one from a 2001+ model year)
    Last edited by TW-Brian; 03-05-2019 at 10:47 PM. Reason: added p.s.
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  3. #3
    Senior Member ronnydog's Avatar
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    I have all of those parts!

    ronnydog
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  5. #4
    GOF
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    Did the previous own say why he thought it had bottom end trouble?
    1988 Suzuki Savage
    1987 Yamaha TW200

  6. #5
    Junior Member Atvtrailrider's Avatar
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    He just told me bottom end issues. Didn't know any details.

    I have no problem pulling engine out etc but not sure I am comfortable working on engine internally. Was thinking of sending it to someone or buying a known good bottom end.

  7. #6
    Junior Member Atvtrailrider's Avatar
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    And I am in Nampa, Idaho.

  8. #7
    GOF
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    There are some good bottom ends out there. Probably more cost effective to get a good used one and bolt your top end on than sending the engine out for someone else to fix.
    But I would want to check it out and see what is going on first.
    1988 Suzuki Savage
    1987 Yamaha TW200

  9. #8
    Junior Member Atvtrailrider's Avatar
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    How should I go about checking this bottom end? Should I pull the engine out first?

  10. #9
    Senior Member CJ7Pilot's Avatar
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    I'd start by rocking the bike back and forth (chain attached), and see if you can shift through all five gears.

    If so, then the transmission is probably good.

    Then, you'll want to inspect the clutch, and then maybe the crank bearings.

    The lower ends of these engines are pretty robust! It's too bad the seller coudn't give you a little more info.

    Anyhow, if you can wait a month or two, I'll have a known good lower end available.

    If you're in a hurry, maybe I can tear it down sooner... I'm working on an engine swap, so I have to expect some down-time.

    Cheers!
    Now I must hurry on... for there they go, and I am their leader!

  11. #10
    GOF
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    First, I am no expert. But, if possible, I would ask the previous owner why they thought that work was needed. Next, possibly go over everything you can without pulling the engine. Check the timing chain, valve adjustment, make sure everything is bolted up proper and tight. Motor isn't bouncing around in the frame. Chain is properly clean, adjusted, sprockets good. If nothing else is wrong does the bike run? Is it making strange noise? Maybe pull the oil filter and look for abnormal debris.

    Hopefully someone with more knowledge than I have will chime in soon.

    Well see? My post is pointless as someone with more experience and knowledge posted while I was typing.
    elime likes this.
    1988 Suzuki Savage
    1987 Yamaha TW200

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