Air Box with NO SNORKEL - Good/Bad???

Discussion in 'Crazy-Awesome almost Dakar racers (950/990cc)' started by BRUNO BOTELHO, May 9, 2012.

  1. BRUNO BOTELHO

    BRUNO BOTELHO Been here awhile

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    Hi guys,
    in the past days, i have installed a jetting package on my 950 Adventure.
    After many adjustments i had several dificulties on getting the bike running fine. The jets were correct, but the problem was mainly at 7,500 rpm, with the engine having dificulties on responding in a clean way.
    It seemed like it had lack of air in the air box, although i have made the possible adjustments on the air jet on the carbs.
    I've tried something and it worked very well, i have took out the air box snorkel.
    After doing this, no more problems at 7,500 rpm, and the bike has a clean and fantastic response at any rpm.

    My question is, with no snorkel, is it good, bad and why?

    Should i put back the snorkel and make some holes in the air box cover?

    I know that some bikes with no oem exhaust system and new jetting suffer from lack of air and some guys make holes on the air box resolving the problem.
    Is this the case?

    Some opinions, please :ear
    #1
  2. Tijuana_Taxi

    Tijuana_Taxi Been here awhile

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    I think the snorkel's main advantage is in deep water crossings, other than that I think it's there to reduce intake noise for sound requirements. Putting holes in the correct part of the airbox would put you in even bigger trouble for water crossings than running without the snorkel. I'd say if it works better without it and you don't go in really deep water run it without it. The newer "airboxes" people are coming out with like this one http://advrider.com/forums/showthread.php?t=761703 don't even have an airbox anymore, let alone a snorkel.
    #2
  3. BRUNO BOTELHO

    BRUNO BOTELHO Been here awhile

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    Hi Tijuana,
    thank you for your reply.
    So i guess i will keep on riding with no snorkel, because the bike is running very good :clap
    #3
  4. 990s

    990s Adventurer

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    I,ve done it a little different. , I to was worried about water coming in, since its a paper air filter. So i just cutted away most of the back side of the snorkel, keeping the curved outside as an guard from both water from front and top. I have also rised the glovbox about 10 mm, allowing cold fresh air in around it. It seems like the motor is fresher, specially in the higer rpms. The noise is better to....
    Cheers
    #4
  5. BLUE(UK)

    BLUE(UK) Long timer

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    I doubt the rubber cable seperater thing would stop much water getting in if it was submerged.
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  6. Peanuts

    Peanuts Long timer

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    You can remove the triangular panels off the side of the airbox for more air :)
    #6
  7. BRUNO BOTELHO

    BRUNO BOTELHO Been here awhile

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    Yeah, agree :clap
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  8. 990s

    990s Adventurer

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    Dont know what you meen with the rubber cable seperator thing? I kept the curved outside of the air snorkel, as a kind of guard from water spray/splash/dripping (since it always starts pouring rain whenever i,m out ), maybe saving the paper air filter, who i guess dont tolerate much water. It will suck water submerged of course. I think the snorkel is a major restrictor for air flow, specially at higer rpms.

    I thought about the triangular sidepanels to, but again this air filter worried me..(that wood really been a poor mans hooligan air filter) Has anyone tried?
    Yes its raining again....

    Sorry about my english
    #8
  9. BiGR Rich

    BiGR Rich Been here awhile

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    #9
  10. BLUE(UK)

    BLUE(UK) Long timer

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    Your English is very good.
    The rubber part i mean is at the front of the airbox,you will see it when you remove the snorkel.

    <TABLE class=parts-list-table cellSpacing=0 cellPadding=3><TBODY><TR><TD>60006001030</TD><TD>RUBBER SLEEVE CABLE PASSAGE 03</TD></TR></TBODY></TABLE>
    #10
  11. DragonsTailR1

    DragonsTailR1 Adventurer

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    Just run a Uni Filter kit and forget about the snorkel, mine works great at any RPM. My 2 cents...
    #11
  12. wee tee cee

    wee tee cee Been here awhile

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    Your english is fine.....surely it cant be any wetter than Glasgow, Its rained every day for the last three weeks.....
    #12
  13. stevodadevo

    stevodadevo What happened?

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    That's pretty interesting. I had no idea the airbox dimensions could have such an impact on performance. Thanks for posting.
    #13
  14. 990s

    990s Adventurer

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    #14