With top end unassembled, normal to not go in gear??

Discussion in 'Engine' started by maddmaxx, Aug 11, 2019 at 12:27 AM.

  1. maddmaxx

    maddmaxx Member

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    Hey guys,

    My little girl blew a piston on her 94 blaster...was on the coast and didn't rejet so im assuming thats what caused it. So with the top end off i noticed the bike won't go into gear....is this normal?? no matter what gear im in the bike rolls...thx for any info,

    Max
     
  2. Awk08

    Awk08 Administrator Staff Member Technician

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    without compression the bike will roll in gear, I'll assume the crank and rod are rotating while your doing this ?
    the clutch and all gears inside the clutch cover are still in place ?
     
  3. maddmaxx

    maddmaxx Member

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    i realize now that was a stupid question, i should of known better....the bottom end is completely intact. I'm considering going with the Niche top end kit off of Amazon for $98. I really don't want to put I'm assuming chinese junk on the bike but my 12 year old doesn't ride hard so I"m thinking with the correct jetting we'll probably be ok?? im on a tight budget which is the only reason I would consider it....thoughts??

    Max
     
  4. Awk08

    Awk08 Administrator Staff Member Technician

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    you're wasting $ on those top ends, some may last a while, more than some have failed quickly.
    just spend the $ on having your existing top end bored/honed to a new piston, by a reputable shop.
    http://www.kenoconnorracing.com/ < well worth the cost of shipping to know it is done 100% correct.
     
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  5. lucknuts

    lucknuts Member

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    ^exactly what he said. I had chinese junk, lasted me two weeks. Waste of cash immediately
     
  6. Larry's Shee

    Larry's Shee Active Member

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    Be sure to do a leak down test before starting, then do heat cycles, retorque head and cylinder, break in
     
  7. maddmaxx

    maddmaxx Member

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    ok ok, you've convinced me...lol...i won't go chinese...i found a shop here with a super nice tech he's a banshee builder and seems to really know his stuff. He measured my head and it was at 68mm, he suggested I don't go any higher and to go with a new stock oem yamaha top end. He told me he gets brand new yamaha top end kits complete for a $100 and would charge me $200 labor to do it. I would rather do it myself and save the money but can't seem to find these oem kits new for the price he can get them. What do you all think? thanks guys for taking the time to respond,

    Max
     
  8. Larry's Shee

    Larry's Shee Active Member

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    One nice thing is you found who
    NOT TO USE !!!
    A new Yamaha cylinder is $438.00
    https://www.bikebandit.com/oem-parts/1999-yamaha-blaster-200-yfs200l/o/m146047#sch102333
     
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  9. lucknuts

    lucknuts Member

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    If you’re willing to pay $300. Send it to Ken, see if it’s possible to bore it to 68 or its last at 68.25 (I believe). Get new piston with it and I bet it’d be cheaper than that.

    If neither sizes work, re-sleeving is an option too that he can provide.

    Win win that way.
     
  10. maddmaxx

    maddmaxx Member

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    he guarantees me oem parts...i know where he works so doubtful he would lie to me...lol...i would love to know where he gets these head kits for a $100 too....
     
  11. Larry's Shee

    Larry's Shee Active Member

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    If you doubt my info go to that link, or any Yamaha web site, and look at the prices. Unless that’s price for a used cylinder.

    Better yet, use logic. Boring a cylinder is about $60, a quality piston is $120, gaskets $30.

    BTW, the same company makes junk parts for Banshees and have a life as long as a fruit fly
     
  12. Larry's Shee

    Larry's Shee Active Member

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    Search Niche or Chinese parts on here and learn for yourself.
    Good luck with your choices!!


    You’ll need it
     
  13. maddmaxx

    maddmaxx Member

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    I totally agree with you all....Chinese is junk, I get it..just having a hard time understanding why someone from a long term shop would do this and guarantee their work. I did notice some luck with people and these Chinese heads with a bit of maintenance that is...that said, im going to hit up a machine shop called LED machining who do good work here in Portland and see what I can do with this head.....thanks for all the advice guys, doubtful I'm going with the Chinese knockoff.
     

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