950 Adventure valve clearance question - What would you do?

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by motoracer51, Apr 17, 2013.

  1. motoracer51

    motoracer51 Been here awhile

    Joined:
    Sep 18, 2009
    Oddometer:
    747
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    Western Colorado
    First time checking the valves on my 2006 950 since I bought it last year.

    Bike has 18K miles on it, not sure of the valve check history.

    From my understanding the recommended valve clearances should be:

    Intake : .10-.15mm
    Exhaust: .25-.30mm

    All intake and exhaust on front and rear cylinders are measuring .102mm on the intake and .254mm on the exhausts.

    I know this is within spec, but do you guys think I should re-shim the valves to get to the loose end of the recommendations?

    Thanks!!
    #1
  2. SS in Vzla.

    SS in Vzla. Totally Normal? I'm not!

    Joined:
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    It's in-spec. Leave as is, go out and ride.

    The shims come in 0.05mm increments. If you re-shim, you will be out of spec.
    Yes, you can always grind a shim down to push your clearance more towards the middle of the ideal gap, but I'd leave it alone... It is within spec.
    #2
  3. motoracer51

    motoracer51 Been here awhile

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    I think that's what I was figuring. Not really wanting to make custom shims.:clap
    #3
  4. Orangecicle

    Orangecicle On a "Quest"

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    My exact issue this year. All but the front exhausts were barely in spec on the tight side. Left them alone. I reshimmed just the front exhaust, which was tight.
    #4
  5. Alleycatdad

    Alleycatdad Unbunch yer panties!

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    Not broke. Don't fix it

    S
    #5
  6. Pete156

    Pete156 I love to eat!

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    Ride it
    #6
  7. Zuber

    Zuber Zoob

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    Shim it to the loose end, even if it's a little loose. It will run much better.
    #7
  8. motoracer51

    motoracer51 Been here awhile

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    Just an update.

    I shimmed the intakes to the loose end of the recommendations, and left the exhaust alone.

    Beginning to put the bike back together. Been sitting, apart, since last July.:eek1

    I hope I remember where everything goes.

    I still have a Facet fuel pump to install, jet kit with remote idle mixture screws, starter torque limiter, and water pump seal and impeller to change out.
    #8
  9. bigkuri

    bigkuri Long timer

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    Good man - your valves would have been too tight otherwise... Loose is good.
    #9
  10. KnowFear

    KnowFear Adventurer

    Joined:
    Feb 10, 2003
    Oddometer:
    74
    Location:
    Victoria, BC
    I have a similar question, for a 2006 950:

    Front cylinder...

    Inlet clearances were .11 and .13 (I'm going leave them alone).
    Exhaust clearances are .31 and .32 -- I am very tempted to leave them alone.

    Any recommendations?
    #10
  11. Motomedic

    Motomedic Over-caffeinated Raconteur

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    For the record, Harley V-rod shims come in smaller increments...


    (and yes, they are the appropriate diameter :evil)
    #11
  12. kingrj

    kingrj Been here awhile

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    Ride that bitch!:clap
    #12
  13. KnowFear

    KnowFear Adventurer

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    Agreed. But you responded to the original post, not my question. Do you have an opinion on the .31 and .32 observed clearances? Thanks in advance.
    #13