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  1. #1

    66V Head Pitting

    So, I bought an XL 1200 and it ran fine.
    Then, after reading over some things to do to make them more reliable, I decided to install the Oil Block off plate.

    The compression on the cylinders was 112, 113, 96.
    I knew something was wrong there, so I pulled the head.
    Cyl. 3 had some Nikasil blistering, so I sent it to Millennium.

    The Head dome on cyl. 3 was also not as "oily" as the others.
    When installing the Oil block off, all lines were still attached, so I am confused about why the 3rd dome was not as oily.

    Any Thoughts??


    My main question though: Is it okay to run this head in its current condition?
    It has some pitting, but not in the actual dome.

    Thanks!

    Tom
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  2. #2
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    That pitting is not normal. Something let go and was being pushed into the dome


    sand it and run it

  3. #3
    Quote Originally Posted by thatdude596 View Post
    That pitting is not normal. Something let go and was being pushed into the dome


    sand it and run it
    Any thoughts on the dryness of cyl. 3?

  4. #4
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    Number three is always leaner. Factory flaw

    Several members bump up the jetting specs on the rear jug

  5. #5
    Quote Originally Posted by thatdude596 View Post
    Number three is always leaner. Factory flaw

    Several members bump up the jetting specs on the rear jug
    Much Appreciated! Thanks!!

    Tom

  6. #6
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    When were carbs last gone through?

  7. #7
    Quote Originally Posted by thatdude596 View Post
    When were carbs last gone through?

    Thats a good question, I have no clue.
    What are the recommendations?

  8. #8
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    Lol that's a good way to lean seize the ski. IMO they should be checked yearly. Now that doesn't mean rebuilt but looked over to make sure they are g2g. How many hours? Quite possible you have a clogged carb that's not pushing enough fuel

  9. #9
    Quote Originally Posted by thatdude596 View Post
    Lol that's a good way to lean seize the ski. IMO they should be checked yearly. Now that doesn't mean rebuilt but looked over to make sure they are g2g. How many hours? Quite possible you have a clogged carb that's not pushing enough fuel
    It runs really rich. Like black damp plugs. On cyl 3, it runs a little leaner. It has 82 hrs, but was rebuilt around 60. I don't know if the carbs were rebuilt as well.

  10. #10
    How do you sand these?

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