1. Some members were not receiving emails sent from XJbikes.com. For example: "Forgot your password?" function to reset your password would not send email to some members. I believe this has been resolved now. Please use "Contact Us" form (see page footer link) if you still have email issues. SnoSheriff

    Hello Guest. You have limited privileges and you can't "SEARCH" the forums. Please "Log In" or "Sign Up" for additional functionality. Click HERE to proceed.

Valve Cover Gasket Paper or Plastic?

Discussion in 'XJ Technical Chat' started by rexeven, Mar 14, 2009.

  1. rexeven

    rexeven New Member

    Messages:
    29
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Covington, KY
    So I ordered a valve cover gasket off of ebay for my 1982 XJ650 Maxim. It is just a paper gasket. Since then I have learned the ways of ordering from chacal and would never order from anyone else. Any who I ordered the cam plugs from him and was just checking my haynes manual and it says that the YICS models (which mine is) uses a moled plastic gasket with the cam end seals integrated in. So can I use the paper gasket with the separate seals ok?
    PLEASE HELP
     
    rexeven, Mar 14, 2009
    #1
  2. Don_A

    Don_A Member

    Messages:
    42
    Likes Received:
    0
    Trophy Points:
    6
    Location:
    Shakopee, MN
    I have an '81 xj650 (non-YICS) which uses the paper gasket and cam plugs. The mating surfaces of the valve cover and head are flat and smooth. I believe on the YICS engines the valve cover has a groove in it that accepts the rubber gasket. I don't think the paper gasket will work on the YICS valve cover.

    Hopefully someone who knows for sure will chime in here.
     
    Don_A, Mar 14, 2009
    #2
  3. rexeven

    rexeven New Member

    Messages:
    29
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Covington, KY
    Yeah I haven't actually pulled the cover yet but I think it does have a groove. :( So I think I'm just gonna pull it and if its not too bad just put some High-Temp RTV in the groove and around the end plugs and re-use the old one. Since I already bought a paper gasket and the separate seals. Bummer!
     
    rexeven, Mar 14, 2009
    #3
  4. chacal

    chacal Moderator Moderator Supporting Vendor Premium Member

    Messages:
    9,164
    Likes Received:
    1,973
    Trophy Points:
    113
    Location:
    The room where it happened
    Rex, put down that wrench and step back from the bike!! Just Say No! Do NOT use that paper gasket with the YICS style valve cover. The cover is shorter! Death and destruction are sure to follow!!

    And I don't even think the bolt holes are in the same places, either.........
     
    chacal, Mar 14, 2009
    #4
  5. rexeven

    rexeven New Member

    Messages:
    29
    Likes Received:
    0
    Trophy Points:
    1
    Location:
    Covington, KY
    Thanks! I said NO! :) Just ordered the right gasket. Whats another week of not riding? ....sigh...
     
    rexeven, Mar 14, 2009
    #5
  6. bigfitz52

    bigfitz52 Well-Known Member Premium Member

    Messages:
    21,283
    Likes Received:
    418
    Trophy Points:
    83
    Location:
    Rural SE Michigan 60 miles N of Motown
    Rex, you better order the rubber "donuts" that go on the bolts too. They are what actually do the work of pushing the valve cover down against the gasket/head.

    The bolts have stop collars on them that prevent overtightening. If your "donuts" are all hard and compressed, the new gasket will leak anyway. You cannot tighten the bolts "further" to compensate.

    While you've got it apart, you do plan to check those valve clearances, right?
     
    bigfitz52, Mar 15, 2009
    #6

Share This Page