How To: Replace Valve Cover Gasket
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Thread: How To: Replace Valve Cover Gasket

  1. #1
    G20 Newbie
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    valve cover gasket

    I need to replace my valve cover gasket...does anyone have any links on how to do it correctly, or have any tips? I'd like to do it myself if possible.

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  3. #2
    G20 Guru Garrett's Avatar
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    If you already have one, it should be pretty streight foward, take off the bolts, replace the gasket, but them back on, someone would need to re-affirm this though, I dont' trust myself 100% under the hoot yet.


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  4. #3
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    Read this thread, and read the replies regarding the sealant...

    Check steps two and eight on this page for the loosening/tightening sequence.....
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  5. #4
    GeeTwentyTee
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    Re: valve cover gasket

    Originally posted by shouldibuy
    I need to replace my valve cover gasket...does anyone have any links on how to do it correctly, or have any tips? I'd like to do it myself if possible.

    Its very easy to do shouldibuy. Just take off the VC in this order...



    Then take off both the old outer gasket and the one that goes around the spark plug holes (on the inside part of the VC). Put some RTV silicone around the cresent shaped part of the new outer gasket and stick that on the VC (along with the new spark plug hole one, ya gotta buy both) and tighten the VC using this sequence...



    Tighten the bolts down to 6.5-7 foot lbs with a torque wrench.



    And thats it. Its really easy bro.

  6. #5
    Nobody f's with the Jesus Yahnozha's Avatar
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    Cool, you guys made the FAQ - Just be sure to note the torque value on those VC bolts....they are in IN/LB

    http://www.g20.net/forum/showthread....743#post136743
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  7. #6
    G20 Junior Member clokwurk's Avatar
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    Quote Originally Posted by Yahnozha View Post
    Cool, you guys made the FAQ - Just be sure to note the torque value on those VC bolts....they are in IN/LB
    6.5-7 IN/LB?

    This conversion chart says that is ~.5 FT/LB.

  8. #7
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    Quote Originally Posted by clokwurk View Post
    6.5-7 IN/LB?

    This conversion chart says that is ~.5 FT/LB.
    No the figures in the post above are in lb-ft but the FSM values are in lb-in
    http://www.g20.net/forum/showthread.php?t=21537
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  9. #8
    G20 Junior Member clokwurk's Avatar
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    Thought so. I just wanted to clarify the above post. It is a little unclear about which values are in what measurement.
    The way it read was different from the posts and the manuals as far as I could tell.

  10. #9
    The Emo Kid. 2000 G-Twenty-T's Avatar
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    question,
    could tightening these down too much cause any issues, if it doesnt result in breaking a bolt or torquing the gasket funny?
    it seems torquing down too far would cause minimal reverse "thermobloc spacer" effect.
    i ask because back in the day we did reannas valve cover, and we didnt have a torque wrench but it seems we tightened probably more than .5
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  11. #10
    Dude, your bed is a car..
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    good question. how can you go by feel if you don't have a tourque wrench???

  12. #11
    La-illaha Il-lallah Hamzer11's Avatar
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    I don't know but I think torquing is important but not absolutely necessary in all parts. I have never seen a regular mechanic torque a valve cover or most any other minor part. Not that I think it shouldn't be done but the effects of not torquing are rarely detrimental on parts like valve covers.

    (¯`'·.¸НŻНS¸.·'´¯)

  13. #12
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    I'm glad I found this thread. I just bought a used '91 G20 and found oil in three of the spark plug tubes.

  14. #13
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    Quote Originally Posted by Turbo Diesel View Post
    I'm glad I found this thread. I just bought a used '91 G20 and found oil in three of the spark plug tubes.
    Oh man ive been there! Replacing the gasket isn't really that hard

  15. #14
    G20 Guru AWOL_g's Avatar
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    bringing it back from the dead...
    I'm doing my VC today and just wanted to touch on a couple things...

    I do need to remove the spark plugs right?
    There is no need to drain the oil right?
    RTV only goes on the cresent moon parts of the gasket? Bottom, top or both?
    Anything else important to remember aside from torque values and order of removal from bolts?
    Last edited by AWOL_g; Mar 29, 08 at 09:22 AM.

  16. #15
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    usually when i change VC's if i don't have a torque wrench i usually tighten until i fell the first amount of resistance than tighten 1/4 turn after that.as for the oil change, i would change my oil just because you can never have too many oil changes.i only put it on the head cresent parts but make sure you don't use too much and have the extra crap end up under your VC and in spots you really don't want it to be.

  17. #16
    G20 Guru AWOL_g's Avatar
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    thanks
    Just changed the oil 150~miles ago so if there is no need to change it....
    also
    RTV only goes on the cresent moon parts of the gasket? Bottom, top or both?

  18. #17
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    you can do both to be on the safe side but all you really need to do is put it on the head but like i said don't use too much.

  19. #18
    G20 Member VQ_Pwr'd's Avatar
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    You have to change the gaskets if there is oil on the top(thread/white part, none on tips) of the spark plugs right?

  20. #19
    Full-Time Chiller . . . . Black95G20's Avatar
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    spark plugs stay in.
    Oil stays in.
    RTV around the whole thing for the best seal (just a little bit, with a little extra on teh crescents), that's what I always do.
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  21. #20
    G20 Guru AWOL_g's Avatar
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    I pulled the plugs, wasted my time I guess..
    I only did rtv in the cresent moon parts, no leaks so far at least.....

    Tip: The washers on the VC will pop of and can easily be lost... Make sure to take them off after the nuts come of so you don't loose them

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