Mga bro,

Air Box po tawag nyo sa big halow plastic box after the air filter? If is yes bakit ba meron pang airbox yung air filter? Does it had something to do with proper air fuel ratio, vacuum? If I will remove it and replaced with an aftermarket (like K&N high performance air filter) what will happen?

thanks in advance.

hello. sa pagkakaalam ko ang main purpose niya is to contain the air filter and to store air para kung kelangan ng carbs hihigop ito ng hangin dito. kya lang may ilang mga airbox na design nila is naka RAM air yung parang pag tumatakbo ka yung hangin sa labas tutulak ng hangin paloob sa air box mo. para di kakapusin ng air yung carbs mo. para mas lalakas pa yung takbo ng bike mo :) just my 2 cents.

Originally posted by elaz
Mga bro,

Air Box po tawag nyo sa big halow plastic box after the air filter? If is yes bakit ba meron pang airbox yung air filter? Does it had something to do with proper air fuel ratio, vacuum? If I will remove it and replaced with an aftermarket (like K&N high performance air filter) what will happen?

thanks in advance.

pag-magpapalit ka ng power filter like k&n kailangan mong mag palit ng jetting kc ang OEM jettings eh naka tune para sa stock air box mo.

ang alam ko, airbox is not after the airfilter... yun mismo yung air filter.. nandun sa loob yung parang foem... oo nga kapag nagpalit ka ng aftermarket filter itutune mo ulit yung carbs mo.... tsaka ang alam ko hindi ata pede sa atin yung ram air design kasi hindi naman automatic na nag aadjust ung a/f mixture eh.. so kapag bumibilis ka mag dadami yung hangin na papasok... correct me if im wrong...

elaz,
iba yung airbox sa air filter but you already know that. tulad ng sabi ni aloy_g, pag pinalitan mo yung airfilter mo to something that flows more air, kailanang magre-jet ka nang carburador or adjust yung fuel map ng engine manangement computer mo kung fuel injected yung bike mo. the only way to know for sure is to put the bike on a dyno or kung pumapalya or humina yung bike's performance.

Yung airbox mo is designed for the displacement ng bike mo for intake noise level suppression as well as to hold your airfilter and keep water from going into your engine especially when it is raining. In some cases tulad ng sabi ni jeff_o, it is sealed to help presurize air if the system is designed for ram air effect.

Unless you did major modifications to your engine, keep the airbox.
cdc

Originally posted by elaz
Mga bro,

Air Box po tawag nyo sa big halow plastic box after the air filter? If is yes bakit ba meron pang airbox yung air filter? Does it had something to do with proper air fuel ratio, vacuum? If I will remove it and replaced with an aftermarket (like K&N high performance air filter) what will happen?

thanks in advance.

CDC already stated the purpose of airbox/Airfilter... to suppress the noise from the carb. Inside that airbox, airfilter..obviously to filter out dirts & water from air going in the carb.

If you are going to remove ur airbox & replace it w/ racing filters, you will make the air-fuel mixture lean. Lean mixture means more air & less fuel, which may lead to engine trouble (seizure o kaya butas na piston). Dapat magpalit ka ng main jet or lakihan yung butas ng stock main jet mo. Advantage pag nagpalit ng racing filters, lalakas ng konti makina mo kung na i-rejet mo & corrected the A/F mixture. Disadvantage: Lalakas din ng konti sa consumption ng fuel & mas iingay yung makina mo due to noise from carb suction.

A practical way to check the A/F mixture is thru Spark Plug tip reading after full throttle run. Try to attain the dark brown plug tip color. Iwasan mo yung white tip color (lean mixture) baka butasin yung piston mo. Kung medyo black yung plug tip mo, rich yung mixture, try to adjust the carb air screw. Good luck bro.

Thanks sa input mga Bro;)

One thing I really noticed from some Dio's running today without the airbox (and for their engine sake)even w/o an airfilter:eek: . Boy, I hope they knew what they are doing:rolleyes:

I have attached a picture of my scoot and obviously its the only thing ugly at the rear and main reason why I want to ditch it.

Another question. When you say Fuel re-jeting does it mean opening the carb and changing few parts or its as simple as adjusting a screw like the idle and air?

Here's the best angle and close up view of my carb (w/o removing the airbox). I dont see any other srew for fuel re jetting.

What I notice from the dio's w/o airbox and filter by the way are noisy (forgot to mention that:D )

Originally posted by elaz
What I notice from the dio's w/o airbox and filter by the way are noisy (forgot to mention that:D )

Yepp. In most cases, OEM airboxes are accoustically designed to reduce engine noise coming from the intake port. Much like what a muffler does to the exhaust.

You have a really nice scoot. Why ditch it?

Originally posted by elaz

Another question. When you say Fuel re-jeting does it mean opening the carb and changing few parts or its as simple as adjusting a screw like the idle and air?

Bro, thats a really nice skut! About rejetting the carb, it means you are going to increase the gas intake by changing or increasing the mainjet. (Ex. frm #86 to #90). You have to open the carbs bowl at the bottom then change the main jet or re drill it. But if you are not that quite familiar w/ carb tweaking, i suggest to bring that georgeous bike to an expert mechanic or a friend that knows what to do. A wrongly tuned carb may result to engine breakdown (Butas na Piston, Ceased Piston, or kung rich ang timpla, hard starting & fouled plugs). Try to observe or ask what the mechanic will be doing at least you can do the tuning next time.

I suggest not to redrill the original main jet but to buy the recommended jet. Usually price ranges from P80 to P200. At least you have the stock jet if ever you want that original airbox back on your ride.

Basically the mechanic will change(increase) the main jet size, then adjust air screw & if needed the needle slot. Then if he feels its running fine, he will do the plug reading method (run on full throttle, then turn the engine off & cool it down & remove & check the color of the new spark plug ceramic -should be dark brown not white).

Some sites to help you:

http://www.scooterhelp.com/tuning/carbs.dellorto.html

http://justkdx.dirtrider.net/printcarbtuning.html

OJ,

what i want to ditch is just the airbox not the scoot unless meron na Jetforce available:D

Wacko_dz,

Salamat sa tips and links unfortunately its another a dead end for me. I cant open the carb since it still under warranty. I thought re jetting can be done just with a simple tweek outside the carb or else where.

But, i would still buy and try performance air filter with out touching the carb. From there I will just observe the engine and spark plug and see how is it doing (using your tip as my refference). Hope things goes well, if not I will just have to use back the stock airbox. As for the noise I dont mind since it will be burried by the noise of the tune pipe (polini) i bought from the same dealer of the scoot as they agree installing the pipe will not void my waranty.

aloy_g, Biker jet, CDC, Jeff

Mga Bro thanks sa input:C

Owhhh....Still under warranty...Wow...Very fresh scoot. Just enjoy those stock parts for the mean time. You can try to install the performance filter & adjust the air screw, I dont know your carb..is it dellorto? Adjust it on less air setting since you had greater air intake on that filter. If you can, adjust also the needle clip to lowest position for more gas intake. Just take an extra care not to lean out the mixture or else you will end up in ceased engine. Use new plugs on pug reading.

After that warranty period, I suggest you bring that to our Master Tiba ...ah...Modular Overrev pala...for more performance tuning. Port & Polishing your block would do great deal in power since you had that polini tuned pipe. Happy new year & ride safe bro.

Originally posted by elaz
As for the noise I dont mind since it will be burried by the noise of the tune pipe (polini) i bought from the same dealer of the scoot as they agree installing the pipe will not void my waranty.



ang alam ko mas maingay yung carb kaysa pipe. so kapag nag palit ka ng filter, yung ingay ng pipe mo yung matatabunan ng ingay ng carb. :D yung akin kasi ganun eh.

oo nga lalo na pag koso ang filter sobra ingay. pero kung polini foam type di gaano

Ganun ba buti pala di pa ko nakakbili air filter. Ano ba me rerecomend nyo? My goal is basicaly to replace the bulky air box.

Originally posted by elaz
Ganun ba buti pala di pa ko nakakbili air filter. Ano ba me rerecomend nyo? My goal is basicaly to replace the bulky air box.

polini or malossi may maliit non nakita ko dati nakakabit sa dragster. meron cguro para sf2

@ elaz,

bro ung friend ko na nka jet na scut ayaw nya rin ng bulky airbox, so what he did is change his main jetting from 90 to 105 then install a k&n type filter n also adjust air on the carb (add)

ok naman lumakas nga lang gas consumption nya...


@ wacko

bro mine naman i changed my main jetting from 90 to 80, any bad effect by doin this???

tia!!!

Originally posted by suzer

@ wacko
bro mine naman i changed my main jetting from 90 to 80, any bad effect by doin this??? tia!!!

Bro, is that for your jet100? In short liniitan mo yung main jet...Mag le-lean yan kung full throttle andar mo. Try to read your spark plug after a full throttle run. Pag white yung ceramic ng plug mo, lean nga. Pero kung dark brown color-OK pa rin yun.

You're replacing your Devil pipe with a Polini??? :?

sinski BB meron ba nito mga sir?

Originally posted by lexce
sinski BB meron ba nito mga sir?
Jettings or Airbox? Kung Jettings meron din available kay exact sa 2nd ave caloocan

Originally posted by reekee98
Jettings or Airbox? Kung Jettings meron din available kay exact sa 2nd ave caloocan

no offense meant and sorry 4 my ignorance but i dont understand what you posted e...
please elaborate more.. kasi if this can ensure good running condition of my bb, i will try to extract it from my allowance kay mrs.. hehehe:D

Originally posted by lexce
no offense meant and sorry 4 my ignorance but i dont understand what you posted e...
please elaborate more.. kasi if this can ensure good running condition of my bb, i will try to extract it from my allowance kay mrs.. hehehe:D
*jettings- fuel jet- parte ito ng carburator...eto ung parang maliit na screw na me butas. karaniwan e tanso..nag re-regulate ng gas papasok sa carb/ engine.
*air box- dito nakalagay ang air filter. dito din kumukuha ng hangin ang carb.

guys, pls. correct me if i'm wrong:D

Originally posted by wasted_23
*jettings- fuel jet- parte ito ng carburator...eto ung parang maliit na screw na me butas. karaniwan e tanso..nag re-regulate ng gas papasok sa carb/ engine.
*air box- dito nakalagay ang air filter. dito din kumukuha ng hangin ang carb.

guys, pls. correct me if i'm wrong:D

either of the 2 meron nakainstall sayo bro?
oks ba performance?

Originally posted by lexce
either of the 2 meron nakainstall sayo bro?
oks ba performance?
hehehehe... bro., lahat ng skut meron nyan..
eto sya, ung itim na plastic (airbox)

Originally posted by wasted_23
hehehehe... bro., lahat ng skut meron nyan..
eto sya, ung itim na plastic (airbox)

no air catcher men , kung may naka kabit sayo?

Originally posted by lexce
no air catcher men , kung may naka kabit sayo?
yup...pang dio pede ikabit

Originally posted by wasted_23
yup...pang dio pede ikabit

if you have time bro.. post na rin yung pix and post in the forum.. thnx

sure, no problem bro:)

eto yung air catcher... sorry low resolution...

Lex, I think dun sa isa sa tagaytay pix namin meron close up pix yung scoot ko kita yung air catcher

elaz,
that bulky airbox will keep your scoot running when the rainy season comes....
i suggest you keep it. i think aesthetics is less important than performance.

Bimbo

Originally posted by BoyG
elaz,
that bulky airbox will keep your scoot running when the rainy season comes....
i suggest you keep it. i think aesthetics is less important than performance.

Bimbo
i agree... pag umulan o dumaan ka sa baha. malamang pasukin ang filter mo kapag exposed at walang air box.

aloy_g,

off topic tol, ano ung nakakabit sa elbow ng tuned pipe mo, alum sheet ba un? san nakakabili non? im having problem kc with rust sa pipe ko eh

Originally posted by wasted_23
i agree... pag umulan o dumaan ka sa baha. malamang pasukin ang filter mo kapag exposed at walang air box.

me echo pala sa forum:D :O :hug:

Boyg,

Thanks for the advise that's something I didnt realize.

Actually I just figured out too na di pwede pala na wala airbox yung scoot ko (unless I will fabricate a braket or something to hold it) kasi its the only thing supporting the carb. Yup, the carb had no independent mounting on the block, chassis or elsewhere. If I will replace the airbox with an airfilter, only the plastic hose that connects it from the engine intake will hold the carb and the filter which I think will be stressed out lalo kung mabigat yung airfilter na mabibili ko not to metion the vibration it will be subjected sigurado di tatagal.

tingnan nyo

eto o

Originally posted by elaz
me echo pala sa forum:D :O :hug:
hayufff!!!! d na kita kabati...:angry: :M :I :D

Originally posted by elaz
me echo pala sa forum:D :O :hug:

Boyg,

Thanks for the advise that's something I didnt realize.

Actually I just figured out too na di pwede pala na wala airbox yung scoot ko (unless I will fabricate a braket or something to hold it) kasi its the only thing supporting the carb. Yup, the carb had no independent mounting on the block, chassis or elsewhere. If I will replace the airbox with an airfilter, only the plastic hose that connects it from the engine intake will hold the carb and the filter which I think will be stressed out lalo kung mabigat yung airfilter na mabibili ko not to metion the vibration it will be subjected sigurado di tatagal.

tingnan nyo
Dapat bati kayo ni ron kasi kaya nya gawan ng paraan yan.....

Originally posted by reekee98
Dapat bati kayo ni ron kasi kaya nya gawan ng paraan yan.....

Ganun ba...........:eek:

Wasted

Next tour ako na madadala ako ng polini para sa yo:k

elaz

my old speedfight was equipped with the Polini free flow filter. sobra hassle kasi yung carb natatanggal na lang bigla. The bike also bogs down when it rains coz the carb is directly exposed to the water spray from the rear mudguard. In addition to that the noise that the carb makes when using a free flow filter is unbearable.

meron akong ibang nakikita na kinakabitan nila ng ginupit na lalagyan ng 2t, para hindi pasukin ng tubig kahit umulan.

OT:
Originally posted by biker_jet
aloy_g,

off topic tol, ano ung nakakabit sa elbow ng tuned pipe mo, alum sheet ba un? san nakakabili non? im having problem kc with rust sa pipe ko eh

hi temp paint lang yun na silver. :D oo nga makalawang kasi eh.