Valve and Oil Filter cover Gaskets
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Thread: Valve and Oil Filter cover Gaskets

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    Senior Member jannaruto's Avatar
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    Valve and Oil Filter cover Gaskets

    Dear Guys,

    If I would like to go to a oil seal shop or something similar, which size I have to look for inc ase I want these gaskets?

    Intake Valve Cover Gasket
    Exhaust Valve Cover Gasket
    Oil Filter Big Gasket
    Oil Filter Small Gasket

    Please no OEM parts or similar, I think I have to go there and give them a measure in millimeters and probably something relative to an heat resistance ratio (I guess the valve covers gets super hot)
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    Senior Member Fred's Avatar
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    Good plan, you should be able to find matches, especially if you take the cleaned up covers and old gaskets with you the the store.
    My local industrial hydraulic repair shops and parts jobbers have oil resistant o-rings in numerous metric sizes. They just used a micrometer on my cover and then pulled new o-rings from their inventory. Perhaps buy a few spares too?
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    Senior Member jannaruto's Avatar
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    Quote Originally Posted by Fred View Post
    Good plan, you should be able to find matches, especially if you take the cleaned up covers and old gaskets with you the the store.
    My local industrial hydraulic repair shops and parts jobbers have oil resistant o-rings in numerous metric sizes. They just used a micrometer on my cover and then pulled new o-rings from their inventory. Perhaps buy a few spares too?
    Point is that I should go with my bike since I don't use car XD sooooo it will be sketchy to remove the covers for valves and oil filter there, I was hopeing if someone of you had a measure of inner diameter and width of the orings

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    Senior Member elime's Avatar
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    For the valve cover o-rings try size: 2-140 N-70

    I paid 21 cents each and that was probably high but a hell of a lot better than the 9 dollars each Yamaha wanted.

    Oil filter big gasket try: 2-227 N70
    It is a teeny bit to big but it works OK.

    Oil filter small gasket try: 2-108 N70
    It is a teeny bit to small but it works OK. I am using both without any problems.

    Tighten bolts just tight enough to compress the new o-rings. The bolts don't have to be any tighter than that.
    Last edited by elime; 12-07-2017 at 01:17 AM.
    Long live the internal combustion engine!

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    Senior Member jannaruto's Avatar
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    Quote Originally Posted by elime View Post
    For the valve cover o-rings try size: 2-140 N-70

    I paid 21 cents each and that was probably high but a hell of a lot better than the 9 dollars each Yamaha wanted.

    Oil filter big gasket try: 2-227 N70
    It is a teeny bit to big but it works OK.

    Oil filter small gasket try: 2-108 N70
    It is a teeny bit to small but it works OK. I am using both without any problems.

    Tighten bolts just tight enough to compress the new o-rings. The bolts don't have to be any tighter than that.
    This 2-140 is like a code? I don't know if here in italy we use this kind of measure etc

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    Senior Member elime's Avatar
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    Quote Originally Posted by jannaruto View Post
    This 2-140 is like a code? I don't know if here in italy we use this kind of measure etc
    Yes, it is like a part number. Find some place that sells o-rings and ask them.
    Long live the internal combustion engine!

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    Senior Member Fred's Avatar
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    Elime listed identification using American standard nomenclature based on fractional inches. Your Italian suppliers likely have appropriate cross reference sources like the following to convert to the various european standards.
    International O-Ring Standard Cross Reference.
    While this source does not directly identify elime’s O-rings it, and related articles, explain logic behind US nomenclature and have links to other cross reference sources. Italian professionals should be able to help you by interpreting the US codes and supply you with equivalently sized and oil resistant O-rings.
    Buona fortuna.
    Last edited by Fred; 12-07-2017 at 12:53 PM.
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    Senior Member elime's Avatar
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    See if this cross size chart works.

    https://www.darcoid.com/userfiles/pr...-xxx-sizes.pdf
    Last edited by elime; 12-07-2017 at 07:48 PM.
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  10. #9
    Senior Member jannaruto's Avatar
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    Purchased and replaced :P
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  11. #10
    Senior Member elime's Avatar
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    Quote Originally Posted by jannaruto View Post
    Purchased and replaced :P
    I am curious, what did you tell the sales person you wanted ? Did you use the N-120 or did you use millimeters ? How much were they ?
    Long live the internal combustion engine!

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