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Thread: Green Air Filter - Oiling

  1. #1
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    Green Air Filter - Oiling

    Have a new 206 arriving soon and have been reading various stuff about caring for it and getting started with it. I am relatively new to karting (more specifically, new to working on my sons kart) and am unsure about something. I read things about "oiling" the air filter. Can anyone speak to that? Why would you do it (ie what value does it have), when to do it? How much to apply, how often? Is there a specific kind of oil/spray I should use?

  2. #2
    4 Cycle Advanced User Jimbo's Avatar
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    If you are going to be racing on dirt, the first thing i would do is put some kind of deflector or home made fender between the RR tire and the air filter.
    If it's a dusty track you can destroy the engine (rings) the first time out.
    Oiling simply helps to keep (trap) the dust / dirt before it can get in the engine.
    Even if you race on asphalt you can get a lot of dirt or debris thrown right at the air filter.
    Even though the rules may say you aren't allowed to use any prefilters, i would lobby to allow it in many situations.
    You can use a foam or fine mesh nylon prefilter to go over the air filter.
    You can oil the foam pre-filters but i would not oil the nylon mesh pre-filters.
    If you are going to oil the Green filter there are many racing products like Briggs, Klotz or K&N filter oil that you can use. The directions are on the spray can. You can get it from almost any advertiser on this site or maybe at your local auto parts store or even mas merchandiser.
    Thank You to the 2017 206 Cup Grand National Champions for choosing Faster Motors
    Cayden Fretwell Sportsman Class Champion
    Emily DeMaster Junior Class Champion
    Grant Zimmermann Senior Heavy Class Champion
    Randy Raridon Masters Class Champion

  3. #3
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    Double check the Briggs rules. As long as you are using an un-modified Green air filter, there is nothing that says you can not use a pre-filter from my interpretation of the 2018 Briggs rules. Is there an organization the says no pre-filters?

  4. #4
    4 Cycle Advanced User Jimbo's Avatar
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    Some sprint racing rules do not allow the use of Pre-filters because of the fear that someone just might put something under the prefilter or treat the air filter with some type of power booster or accelerant.
    To not use some type of Pre-filter when dirt oval racing is a recipe for short engine life.
    If someone shows up on the grid with a rag over their air filter i would not allow him to start the race until he replaced the air filter with a different one. I would not let him use another one of his air filters. I would gladly give him one of mine to use. I would impound his original filter and inspect it very carefully.
    Thank You to the 2017 206 Cup Grand National Champions for choosing Faster Motors
    Cayden Fretwell Sportsman Class Champion
    Emily DeMaster Junior Class Champion
    Grant Zimmermann Senior Heavy Class Champion
    Randy Raridon Masters Class Champion

  5. #5
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    Honestly if you soaked the filter in nitro right before you left the grid it would be gone by the first 1/2 parade lap.

  6. #6
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    I would be more concerned about guys running excess fuel line (with an additive in it) than guys freezing nitro in their air filter.
    Yes, both methods work for a short time...but if you ever considered how long one of these engines will run off of simply fuel in the line, you'd see why some have gone to running a little extra line and some juice.

    If you run on dirt or pavement, I would highly recommend oiling the Green filter.
    It will not hurt the airflow enough to change any performance on your engine at all. (Just be sure that the oil has had adequate time to dry before racing.)
    Do not over oil. Enough to "color" the filter is adequate. It should not be dripping or wet.

    For dirt, every track that I have been to allows the use of a pre-filter for the LO206 class. Any that does not, would be one to steer away from. I can't imagine what else that tech man would look for if he's that concerned with tossing someone over pre-filters!
    Keep in mind that rain protectors are allowed at pavement events when there is rain/moisture present.
    Usually an Outerwears is sufficient as a pref-filter on dirt. Occasionally I have seen the need for a foam pre-filter that also needs oiled. Biggest problems I have seen is off track excursions or when you pull off of the track coming back to the scale area, etc.



    -----
    Thanks and God bless,
    Brian Carlson
    Carlson Racing Engines
    Vector Cutz
    www.CarlsonMotorsports.com
    29 years of service to the karting industry
    Linden, IN
    765-339-4407
    bcarlson@CarlsonMotorsports.com

  7. #7
    4 Cycle Advanced User Jimbo's Avatar
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    Sundog
    Sometimes we don't give cheaters enough credit for their ingenuity.
    Thank You to the 2017 206 Cup Grand National Champions for choosing Faster Motors
    Cayden Fretwell Sportsman Class Champion
    Emily DeMaster Junior Class Champion
    Grant Zimmermann Senior Heavy Class Champion
    Randy Raridon Masters Class Champion

  8. #8
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    We run on asphalt and with an oiled filter dust/dirt tends to cake up after just a few sessions. Get 2 or 3 filters and have them cleaned, oiled ready to go and you shouldn't have any problems.

  9. #9
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    Quote Originally Posted by Jimbo View Post
    Sundog
    Sometimes we don't give cheaters enough credit for their ingenuity.
    Once saw a couple guys, in the flathead days, at a street race, elbowing the air filter coming off the corner. Getting a nice burst, from their elbow pad.

  10. #10
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    Back to first post. Don't over-oil! A couple of thin lines around the filter will bleed out to the rest of the filter for a nice coverage that does the job that does not restrict airflow.

    DK

  11. #11
    4 Cycle Advanced User
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    These filters are designed to be oiled for use. The oil helps trap the small particles that may otherwise make it through the filter. I have had many people complain about dust in the carburetors, even with a pre-filter. Had them oil the filter, and no more problem.

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