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Valve clearence XJ700X

Discussion in 'XJ Technical Chat' started by MaxRodax, Sep 9, 2017.

  1. MaxRodax

    MaxRodax New Member

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    I will probably be done with my carbs in the next few days. Now is time to check the valves. I try to have all the parts handy before I start taking stuff apart; what do you suggest to do shim wise? should I try to buy a kit? should I measure and then order specific sizes? which is the most recommended way to do it?
    I just don't want to leave my Maxim without a top!
     
  2. TheCrazyGnat

    TheCrazyGnat Well-Known Member

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    The recommended way is to measure then order what you need, or contact hogfiddles for the shim pool. Getting a kit will land you with a lot of shims you don't need, and maybe not enough of what you do. I'd just put the valve cover back on while you're waiting for shims. Get the bolts finger tight and it should be fine.
     
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  3. MaxRodax

    MaxRodax New Member

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    Thanks
     
  4. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Last edited: Sep 9, 2017
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  5. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    ..and more costly than the other type of shim. All the more reason to not order a kit.
     
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  6. MaxRodax

    MaxRodax New Member

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    Thanks, I read that one already. I'm thinking I am going to take a couple of days off when I get into it. Full concentration! I have to say that I am having a lot of fun.
     
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  7. Bradstrac

    Bradstrac New Member

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    When rotating the crank 180 degrees, what did you line the 'T" up with when measuring cylinder 2?
     
  8. Timbox

    Timbox Well-Known Member

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    If you are using the standard round feeler gauge you will have a time of it. Use the ones that are rounded but pointed as well. I tried to get good readings with a standard round set and just had a heck of a time of it. As soon as I changed over to the longer round ones it was easy.
     
  9. Bradstrac

    Bradstrac New Member

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    I have the right feeler gauge, when I rotate the crank 180 degrees to measure clearance of cylinder 2 where do I stop the crank? There isn't any marks as to where to align the "T" at 180 degrees.
     
  10. Bradstrac

    Bradstrac New Member

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  11. Timbox

    Timbox Well-Known Member

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    As long as the cam lobe is pointing away from the measuring point to the furthest point. Once the cam is pointing away from the shim point at 180 you can measure the gap. I don't use the marking on the crank timing mark area. I visually see the cam lobe point away from the shim to take the measurement.
     
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  12. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    ^This^
    The marks on the reluctor plate are only there for finding TDC on cylinder #1, and setting the cams into position for installing/adjusting the cam chain adjuster.
    If you prefer a visual refrence at the crank you will need a degree wheel.
     
  13. Bradstrac

    Bradstrac New Member

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    Thanks Guys! I have finished my measurements, they are all out of spec. Intake are from .06 -.09 Should be .11-.20 Exhaust ran from .15-.18 Should be .21-.30. Bike has 33,000 miles and I don't think a valve adjustment has ever been done.
     
  14. Timbox

    Timbox Well-Known Member

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    I will give you a heads up, try to get those shims from a shim pool. Those little buggers are pricey new! Hopefully you can reuse some of them for the IN to the EX or even on the same sides. Write everything down on paper and see it before you do it. That way you get as few as possible and do it once and correct.

    Getting those cams back on and in place timed correctly with take a little effort. Well maybe for you it will work just right and you will be like me, I had to walk away from the bike a few times doing my X. Once you get her all back together she will sound so good and run strong!
     
  15. Bradstrac

    Bradstrac New Member

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    Thanks Timbox! I am a little nervous about the cams! I am going to remove them tonight, I ran out of time last night.
     
  16. xHondaHack

    xHondaHack Active Member Premium Member

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    Yes doing the Maxim X valve shim check and resetting the clearances to get them in-spec can be tedious.

    There's some helpful info that I snipped from HAPs Maxim X website and you can read more at
    http://www.maxim-x.com/notes.html#shimpool

    He has been gracious to provide a link to an excel chart to use as a guide and says:

    The Maxim-X service manual contains detailed instructions and a shim table to help select replacement shims.

    I've also created an automated Excel spreadsheet to help with the shim calculations.
    You can download the Maxim-X Valve Shim Table spreadsheet here.

    Hope that helps.


    Tony
     
  17. Bradstrac

    Bradstrac New Member

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    Yes it does! Thanks Tony! Now I am trying to get the cams out, is it a must to remove the cam sprockets?
     
  18. xHondaHack

    xHondaHack Active Member Premium Member

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    You might be able to do that by taking just one off, but I always do both.

    Tony
     
  19. Bradstrac

    Bradstrac New Member

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    Okay, I have all my measurements. When it comes to being in spec, is it better to be closer to min or maximum tolerances? 20190517_101704.jpg
     
  20. Chitwood

    Chitwood Well-Known Member

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    In spec is in spec
     
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