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Help Rattle? & valve clearance

Discussion in 'Maintenance' started by Damus, Jan 6, 2016.

  1. Damus

    Damus She is a BEAST and riding it is comparable to sex Dirty Wheel Club

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    Hi guys it's been a while because the bike has been completely reasonable to a large degree for quite a while.

    Coming very close to full license but I am going to continue with the mc22 I just love it.

    First question:
    I have developed a random rattle recently that sounds like a washer spinning around a bolt at the front of the bike just underneath the tank.
    It doesn't rev match and only starts rattling when there is the right resonance from the engine.
    It happens when the clutch is in or out, neutral or not neutral and doesn't sound like it's coming from inside the engine but who knows.
    I looked for any lose nuts or etc etc but I just can't find the damn thing.

    Second question:
    I haven't got the valve clearances checked since owning the bike and I think I'm really pushing it.
    Is this something I would be capable of doing? Or should I just bite the bullet and go to a mechanic?

    Thanks heaps,
    Damus
     
  2. Damus

    Damus She is a BEAST and riding it is comparable to sex Dirty Wheel Club

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    Oh and does anyone know where I can get a genuine honda air filter for mc22?
    The eBay one I got doesn't seem the same to me tbh.
     
  3. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    www.jp-parts.com for genuine parts, you need the part number though.

    Measuring valve clearances is easy. Changing shims is annoying. You have to remove the camshafts. Proper tools are needed
     
  4. Joker

    Joker See "about me" for contact details. Contributing Member

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    Assuming the MC22 also has buckets like the FZR sometimes with looseness they can "spin" on the spot on top of the valves. Mine did that a little bit before I did clearances.

    Valve clearances should be researched a little so you understand what you are doing, but they're not that difficult. Feeler gauges and 1/2 a day (for the first time) will help you understand where you are at, then it's changing shims.

    On the latter part, you'll need to understand what TDC is on #1, difference between exhaust/compression stroke etc - know how to rotate your crank manually, the difference between the camshafts, how to take slack out of the cam chain etc. Don't be daunted it's not overly complicated stuff, it's just wise to read up on it first.

    Try this for a basic lesson in TDC:

    http://www.2fiftycc.com/index.php?threads/top-dead-centre.7889/
     
  5. zixxer

    zixxer Well-Known Member

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    on cbr250.com there is a guide on how to do valve clearances on the mc22's, it's a pretty basic job as it has no cam chain so just take out the cams and put them back in again.
     
  6. Joker

    Joker See "about me" for contact details. Contributing Member

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    No cam chain? Didn't know that. Then it should be a piece of cake!
     
  7. Phil

    Phil Senior Member Contributing Member

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    MC22 are mechanical hence no cam chain, so much easier to perform the task without having to worry about cam chains.
     
  8. KICKERMAN360

    KICKERMAN360 Well-Known Member

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    You will probably want feeler gauges purposely made for valve clearances. They have the end bent so you can get the end of it in between the gaps. Using a normal feeler gauge can be tricky (but possible). And the MC22s should be easier although setting the timing is as difficult as doing the clearances.
     
  9. Damus

    Damus She is a BEAST and riding it is comparable to sex Dirty Wheel Club

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    assuming i chicken out whats the expected cost on getting them done?
     
  10. Mclaren

    Mclaren Well-Known Member Contributing Member

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    500-700 depending
     
  11. Joker

    Joker See "about me" for contact details. Contributing Member

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    4-6 hours labour @ trade rate (approximately $100/hr) plus parts (depends but I've seen places charge $20/shim which is robbery) so it can add up if you need to do a bunch of valves (I had to change 9 shims on mine). Measuring yourself is just a set of feeler guages for $10-15 and non-intrusive so if you don't want to do the change you can approximate what you're in for by seeing what is in/out of spec.
     

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