Stock Wolverine\Viking Air Filter Fix
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Stock Wolverine\Viking Air Filter Fix

This is a discussion on Stock Wolverine\Viking Air Filter Fix within the Viking How-To's and Guides forums, part of the Yamaha Viking Service Dept category; The Wolverine and Viking use the same OEM air filter and it has some flaws that can either allow some unfiltered air to get by ...

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Thread: Stock Wolverine\Viking Air Filter Fix

  1. #1
    Super Moderator MassiveOverkill's Avatar
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    Stock Wolverine\Viking Air Filter Fix

    The Wolverine and Viking use the same OEM air filter and it has some flaws that can either allow some unfiltered air to get by or even worse, allow your engine to ingest some metal screws. This mod will address both issues.

    Here you can see in stock form there are two screws that keep the air filter mesh support in place. They don't do a very good job and Yamaha only uses two despite holes being drilled on both sides. If you remove those screws you'll see they only have 4 or 5 threads so it's very easy for them to come out. I worked on a buddy's VI and even though both screws were in place, the metal mesh had shifted, creating a large gap to ingest debris (I mean I found leaves and such on the 'clean' side of the intake).



    You can see the gap better on end. Why Yamaha chose to use screws vs a plastic oval ring to secure the mesh is beyond me. Yes, one of my tabs is missing but not an issue so long as you keep pressure on that end until you get the air filter installed back into the air box.



    The simple\easy solution is to zip tie the mesh to the plastic ribs on the inner air filter frame. You'll have to drill out the stock screw holes to use zip ties that will keep the mesh longitudinally in place and then zip tie the mesh to the plastic ribs to eliminate the gap that's created. Make sure you have the zip tie ratchet mechanism on the inside of the plastic cage so it won't damage the foam filter when you reinstall it. Getting the zip ties inserted on the closed end can be tricky but with some needle nose pliers and using the existing gaps you can get them in place (don't cinch the zip ties tight on that end until all of them are in place).



    Go ahead and trim the excess on the open end. You can leave the tails on the closed end in place as they won't hurt air flow. You don't have to worry about them breaking off and the engine ingesting them as they shouldn't damage anything being plastic and are certainly preferable to your engine ingesting the stock screws Yamaha uses.



    Here you can see the results. I was actually able to cinch the zip ties a little tighter making the gap virtually nonexistent but didn't bother with taking a new picture. There are still slight gaps on the oval ends, but the gap is minor and as you'll see, won't be a problem.



    Nice seal with no gaps.



    Looking end on, you can see everything is perfectly sealed.

    Rockit401 likes this.
    2018 Blue Wolverine X4
    Only 60 MPH X4 in existence (would love for some others to join the club)
    UTVEngineering machined sheave with easy cleanout port
    SpeedoHealer
    Swiss-cheesed airbox lid
    STI HD beadlocks wearing Tusk Terrabite 27x9x12 tires
    OEM windshield, soft cab, and roof

  2. #2
    Junior Member Rockit401's Avatar
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    That is a much better way to do it than the stock setup.
    MassiveOverkill likes this.

  3. #3
    Member Wiley's Avatar
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    i used stainless steel tie straps , weaved in and through plastic /mesh like stitching length wise. would like to replaced with ram air filter..may have to build new flange with 3d printer..experimental trails on going..
    MassiveOverkill likes this.

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  5. #4
    Member Kafir's Avatar
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    I’d be hesitant to use zip ties. They get brittle in the cold and prone to break. Can’t imagine the intake valve will be too enthralled to make its acquaintance.


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  6. #5
    Super Moderator MassiveOverkill's Avatar
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    An intake valve will scoff at such a small piece of plastic, especially when compared to a metal screw, which others have actually had go into their engine and cause damage. People have poured rice and walnut shells into their engine in order to break up carbon deposits. Trust me, it's not going to hurt anything. Your side cutters don't fall apart when you cut the tails off of zip ties do they?
    MORSNO and Wiley like this.
    2018 Blue Wolverine X4
    Only 60 MPH X4 in existence (would love for some others to join the club)
    UTVEngineering machined sheave with easy cleanout port
    SpeedoHealer
    Swiss-cheesed airbox lid
    STI HD beadlocks wearing Tusk Terrabite 27x9x12 tires
    OEM windshield, soft cab, and roof

  7. #6
    Member Wiley's Avatar
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    Ram air mod

    its been a while but have a friend with 3d printer , we're gonna look at flanges at the next service and take measurement of the intake throat (oval end/intake) and build an adapter to accept a cone style K&N reusable filter..and possible figure out a pre-filter for the outer intake! (above the battery) . this an on going project SO no PICTURES are available ..eager development...
    MassiveOverkill likes this.

  8. #7
    Junior Member 300bee's Avatar
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    Would the K&N replacement filter be a good alternative?


    Sent from my iPhone using Tapatalk

  9. #8
    Super Moderator MassiveOverkill's Avatar
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    Quote Originally Posted by 300bee View Post
    Would the K&N replacement filter be a good alternative?


    Sent from my iPhone using Tapatalk
    No, K&N filters are bad. UNI are good OEM replacements, but you still need to do the fix.
    2018 Blue Wolverine X4
    Only 60 MPH X4 in existence (would love for some others to join the club)
    UTVEngineering machined sheave with easy cleanout port
    SpeedoHealer
    Swiss-cheesed airbox lid
    STI HD beadlocks wearing Tusk Terrabite 27x9x12 tires
    OEM windshield, soft cab, and roof

  10. #9
    Junior Member 300bee's Avatar
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    Quote Originally Posted by MassiveOverkill View Post
    No, K&N filters are bad. UNI are good OEM replacements, but you still need to do the fix.
    Thanks for the reply MOk.
    What are the problems with K&N?
    Never used one just curious.




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  11. #10
    Super Moderator MassiveOverkill's Avatar
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    Quote Originally Posted by 300bee View Post
    Thanks for the reply MOk.
    What are the problems with K&N?
    Never used one just curious.

    Sent from my iPhone using Tapatalk
    K&N uses cotton gauze, which isn't a very consistent filter media. It flows air great at the expense of filtration. May not be a problem if you're a racer that rebuilds your engine every few races. They did acquire AEM, which makes DryFlow, which is a synthetic media and uses no oil but the traditional K&N cotton-gauze is substandard.
    2018 Blue Wolverine X4
    Only 60 MPH X4 in existence (would love for some others to join the club)
    UTVEngineering machined sheave with easy cleanout port
    SpeedoHealer
    Swiss-cheesed airbox lid
    STI HD beadlocks wearing Tusk Terrabite 27x9x12 tires
    OEM windshield, soft cab, and roof

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