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Thread: Purpose of airbox

  1. #51
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    Originally posted by Vpower@May 16 2003, 11:40 AM
    Usually someone likes to removes ram air from their air box as they want to run the bike with move linear power, so to speak!
    Not true at all! The ZX-7R P model has TWIN ram air ducts and still has the most linear power band testers had known for sportbikes.
    Ride the bull by it's horns!

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    is there such a thing called Ram air?Wat's do?

    "But it ain't about how hard ya hit. It's about how hard you can get hit and keep moving forward. How much you can take and keep moving forward. Now if you know what you're worth then go out and get what you're worth."

     

     
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    how come sum airbox the hole is facing the back??

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    and i have seen some ppl put vacuum hose is that good? coz the vacuum hose like got turbulance...

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    may i ask ram air and air box are they different? Can add ram air to carb bikes? Does ram air add more bHp to our bikes?

    "But it ain't about how hard ya hit. It's about how hard you can get hit and keep moving forward. How much you can take and keep moving forward. Now if you know what you're worth then go out and get what you're worth."

  6. #56
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    my super4 previous owner go drill a hole at the airbox.. will it haf any diff in performance and any side effect?

    ps: how much does a new airbox for s4 cost?

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    Originally posted by Andy ar@Mar 11 2006, 03:06 AM
    my super4 previous owner go drill a hole at the airbox.. will it haf any diff in performance and any side effect?

    ps: how much does a new airbox for s4 cost?

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    i feel like putting K&N air box, and K&N filther...

    But i dun noe wat is tat? AIR box is for better speed? and the filther is for preventing dirty particles entering?...i wan my bike 2 sound Hollow...and a bit loud.. is it illegal? and i believe some of us, open stomach? i also not sure but stomach thing...

    Pls advise
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    Originally posted by jeffrey83@Mar 13 2006, 09:18 PM
    i feel like putting K&N air box, and K&N filther...

    But i dun noe wat is tat? AIR box is for better speed? and the filther is for preventing dirty particles entering?...i wan my bike 2 sound Hollow...and a bit loud.. is it illegal? and i believe some of us, open stomach? i also not sure but stomach thing...

    Pls advise
    There is no K&N airbox.

    An air box is a device to guide air to e carb.
    By removing e airbox, u will be running way too lean.
    If u want ur bike to sound hollow, u can just poke holes at e side of e airbox.

    An air filter is a device which removes undesirables such as dust, pollen, mold, and bacteria from e air entering ur carb.

    Its illegal to tong ur exhaust. If caught $70. It is very easy to catch one with tong end can. If there is a small screw at e bottom of e end can, it means e end can is operated b4.
    Just tong ur stomach n leave ur end can alone.
    It will achieve e same purpose of reducing back pressure but is alot softer n harder to be caught.
    Anyway both my stomach n end can is tong.
    Why four strokes when all you need is two?

  10. #60
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    my air box doubles up as an air filter.

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    Originally posted by gekokujyou@Mar 13 2006, 09:58 PM
    There is no K&N airbox.

    An air box is a device to guide air to e carb.
    By removing e airbox, u will be running way too lean.
    If u want ur bike to sound hollow, u can just poke holes at e side of e airbox.

    An air filter is a device which removes undesirables such as dust, pollen, mold, and bacteria from e air entering ur carb.

    Its illegal to tong ur exhaust. If caught $70. It is very easy to catch one with tong end can. If there is a small screw at e bottom of e end can, it means e end can is operated b4.
    Just tong ur stomach n leave ur end can alone.
    It will achieve e same purpose of reducing back pressure but is alot softer n harder to be caught.
    Anyway both my stomach n end can is tong.
    okie.. so wat shld i tell the bike shop?... if i wan tong? pls advise this NEWBIE! thanks
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  12. #62
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    For kr150, if take out the airbox?
    the sound will be hollow?
    wad are the pro and cons..??

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    guys i am riding a wave S and i have this racing carb installed by my previous owner... And with this carb i cannot even put in the airbox... Is it a good choice to run without it>? wad's its pros and cons?
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    Quote Originally Posted by effey-spade View Post
    For kr150, if take out the airbox?
    the sound will be hollow?
    wad are the pro and cons..??
    do not try to do that. it takes professional and highly skilled engineers to design and built that bike. whatever they did,they were had safety in consideration plus i wonder why we always want to outsmart the genius?

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    Default Anyone to Cycle?

    Some history books will state that Pierre and Ernest Michaux, the French father and son team of carriage-makers, invented the first bicycle during the 1860s. Historians now disagree and there is evidence that the bicycle is older than that. However, historians do agree that Ernest Michaux did invent the modern bicycle pedal and cranks in 1861.
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    Default Purpose of airbox

    It's there so that oil fumes from the engine are directed back into the combustion chambers to be burnt instead of being vented to atmosphere. Years ago the pipe used to just hang down under the car so that clouds of fumes and oil droplets could spray over the car behind you as your engine became worn.
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    Default Purpose of airbox

    It's there so that oil fumes from the engine are directed back into the combustion chambers to be burnt instead of being vented to atmosphere. Years ago the pipe used to just hang down under the car so that clouds of fumes and oil droplets could spray over the car behind you as your engine became worn.
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    so if airbox is taken out we need to service our carb more frequently ?

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    can anyone pls clear my doubt pls...
    btw i riding x1r

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    depends on ur riding technics also...
    airbox taken out n air box without filter is the same...
    lolx....

    wash carb everytime u service lo... lolx..
    =)
    Suck it n ride!


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    waa like that dam chor sia i think next servcing i gonna put back my airbox n filter. btw x1r can put better airbox like knn or other branded airbox ?

     

     
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    washing carb is to my sp is like ard 4-5 mths once or everytime u do full servicing juz in case ur bike stall due to dirty carb.. =)

    u put back the air box.. u also have to re-tune ur bike...
    if not, air / fuel intake ratio is wrong resulting in loss of power & fc
    Suck it n ride!


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    is it good to drill hole on airbox ? power stronger ?
    whats the pros and cons ?

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    Imagine riding with an open face helmet and open your mouth wide. What goes into the mouth is the same stuff that goes into your engine if u remove the air filter / drilling holes at the airbox. Would any guys like the idea of those stuff going into your mouth???

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    those dirty stuff all these.. icic.. kinda get it. but why so many ppl stil drill hole if its not good ?

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    washing carb is to my sp is like ard 4-5 mths once or everytime u do full servicing juz in case ur bike stall due to dirty carb.. =)

    u put back the air box.. u also have to re-tune ur bike...
    if not, air / fuel intake ratio is wrong resulting in loss of power & fc
    u can wash ur carb hw long interval as u wan.. it's all up to u on hw u wanna keep ur carb clean.. some dont even bother to service it.. some 2-3mths.. some 3-4, some like you 4-5.. for me every mth is the best.. if not at least 2mths once..

    fyi:
    - bike won't stall due to dirty carb.. unless ur carb suck in some stuffs like leaves or what that choke the carb itself that air cant go in n it cant start..
    - take out/put back airbox need to balance back the air fuel ratio back..

    if u take out ur airbox, more air less petrol = running lean( lean = nt enuff petrol)
    if ur previous setting swee swee.. then u hand itchy.. put back airbox.. now is less air more petrol = running rich(too much petrol)

    normally for good pickup u can mess with the airbox.. alternatively.. use back airbox with high-flow air filter is good..
    y i say for pickup.. u see those race bikes(eg kups, etc).. all running mostly w/o airbox.. cos their setting is pickup base.. not the midrange-topspeed range..

    Quote Originally Posted by xuanfan23 View Post
    those dirty stuff all these.. icic.. kinda get it. but why so many ppl stil drill hole if its not good ?
    cos it provides higher air intake, the alternative purchasing a high-flow air filter is by drilling holes.. depending on the rider requirement.. some setting(aka tuning) they need more air intake to compensate for the high fuel supply.. therefore with stock airfilter w/o holes insufficient air supply.. so they either drill holes.. or they take out filter.. or can put a high-flow air filter like k&n, bmc.. etc


    for 2strokers if u running ur bike w/o air filter, best is u remove ur carb and wash it maximum 2mths intervals.. for me i do it monthly.. 2strokes bikes need more care than 4strokes...
    Last edited by kurarensu; 16-11-2008 at 12:43 PM.

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    thx alot~ thats a really helpful post.. i learned something..

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    It's all up to individual preferences. If you want long service life, leave everything on. If you wanna mess with it, why worry?

    And there's so much misconception going on around here... Some bike you take out airbox, it wont even idle properly. Some bikes it doesnt care if it has an airbox (performance wise). Mostly due to factory carburettor settings and design/position of the components.

    Meaning some bikes you remove the airbox will affect the setting tremendously while others dont.



    To the filter or not part, it's either filter, hi-flow filter or no filter. First two no need to say.

    As for the no filter, many races bike dont use them and can perform well but requires to be service regularly. If you scared, dont go this route. If you go this route, dont complain. I ever had a small speck of sand stuck in one of my valves and cant start. But i just bring it to be torn apart to remove it, no biggie.

    Anyway it's you ride the bike not the engineers. So depends on you intent to get out of the bike lor...

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    ok guys, I think you can not generalize the purpose of an airbox ;-)

    every engine will run without an airbox but does it run better? I would give it a clear NO....

    you can take every modern bike it will only run properly with an airbox, on the other hand almost every bike (at least in Europe and the USA) is restricted through the airbox/intake runners and exhaust system.

    Ducati was the 1st manufacturer using the advantage of an airbox and they done pretty well if I remember correct.......

    so don't compare a rattling 10year old super four with a R1 or similar and I don't think most of you guys are able to feel the difference anyways (no offense just a general statement)

    if you wanna do some reading why modern race bikes need an airbox:

    http://en.wikipedia.org/wiki/Helmholtz_resonator

    cheers

    mjv

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    gt smth to ask
    my dad kup kia abit siao siao
    once i slow down den stop at junction
    the engine will die off even though i'm at neutral gear
    izzi the airbox smth wrong or the air filter too dirty liao???
    Last edited by Jaxx; 03-06-2009 at 05:59 PM.
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    deleted post.
    Last edited by vladivostok; 26-02-2010 at 08:24 PM.

     

     
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    deleted post.
    Last edited by vladivostok; 26-02-2010 at 08:25 PM.

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    great info!

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    any idea how much worse will fc be fixing open pod filter on a two stroke?

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    Good one dude..keep doing nice work

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    Hi so I've read the thread and i still didnt manage to clear a few doubts.

    1. drilling holes in an airbox increases air intake and produces an extra sound. so does it or does it not increase performance? and with this extra sound, isit permitted by lta inspection standards or not?

    2. I've heard frm the street that if i there is already a hole in an airbox and you wish to close the hole, you can use a plaster to just patch it up. will this really help? or if i choose to change to a new airbox, how much would it cost?

    My reason to the 2 questions is because i bought my bike and my friends told me it already had a drilled airbox. This affected my startup despite me trying to play with the 2 screws for oil/air for idling. i have a very hard time trying to start my bike hot or cold. and for performance wise, my bike wont respond to sudden throttle feed. like whenever i suddenly throttle for more power, it just doesnt accelerate and just sticks to that speed, but the engine gives a higher rev sound. my bike is yamaha x1r.

    P.S: pm me if u want to give ur personal opinions. or leave it out on this thread so that other users might learn something too. (:

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    the purpose of air filter is to clean up the air to the cylinder so fuel can burn with cleaner air

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    Quote Originally Posted by heil View Post
    Hi so I've read the thread and i still didnt manage to clear a few doubts.

    1. drilling holes in an airbox increases air intake and produces an extra sound. so does it or does it not increase performance? and with this extra sound, isit permitted by lta inspection standards or not?

    2. I've heard frm the street that if i there is already a hole in an airbox and you wish to close the hole, you can use a plaster to just patch it up. will this really help? or if i choose to change to a new airbox, how much would it cost?

    My reason to the 2 questions is because i bought my bike and my friends told me it already had a drilled airbox. This affected my startup despite me trying to play with the 2 screws for oil/air for idling. i have a very hard time trying to start my bike hot or cold. and for performance wise, my bike wont respond to sudden throttle feed. like whenever i suddenly throttle for more power, it just doesnt accelerate and just sticks to that speed, but the engine gives a higher rev sound. my bike is yamaha x1r.

    P.S: pm me if u want to give ur personal opinions. or leave it out on this thread so that other users might learn something too. (:
    might as well take out the rubber connecting the carb to air box , more powerful but louder noise, but i dun think it will affect LTA inspection

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    Quote Originally Posted by wan_tzm View Post
    is using airbox better than using airaudacity temp mail origin filter
    Where to find aftermarket filters for airbox?
    Last edited by dadi01; 08-11-2019 at 01:03 AM.

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