The airboxes for my 99 summit 600 is the biggest pain in the a**. Are there any good aftermarket air boxes that are smaller than the stock box and actually fit. Or could i just run single air pods off the carbs?
Sick of the stock airbox. Any good aftermarket boxes?
- Thread starter skidbro18
- Start date
airbox
The airbox is tuned to resonate and flow more air at the power peak (about 8000 rpm.) If you change the box dimensions: You change the tuning and will change the rpm where the box works.
If the motor is stock that box is worth about 18 horsepower at that motor's peak RPM. If you have changed the rpm where the power peak is then you can change box dimensions to mirror the new RPM power peak.
The airbox is tuned to resonate and flow more air at the power peak (about 8000 rpm.) If you change the box dimensions: You change the tuning and will change the rpm where the box works.
If the motor is stock that box is worth about 18 horsepower at that motor's peak RPM. If you have changed the rpm where the power peak is then you can change box dimensions to mirror the new RPM power peak.
put some filter pods (filter skin makes some good ones) and forget about that junk the only way you are gonna get more air into a engine is if you force it in there no filter box is gonna make air flow better then wide open. It does effect the way the altitude compensater works thats why ski doo cautions u not to remove. if there is a altitude compensater i would recomend getting rid of that too never worked good to begin with. Stock box is there to muffle the intake noise so people dont here the noise and create backpressure for compensator.
do not listen to a word in this reply. These are not 4 stroke motors like your car. As stated above, the stock airbox is tuned to work with the "pulses" your motor creates and give you peak hp and the motor's idea rpm. Don't cut it or change it in anyway, just deal with it
You can believe whatever you like everyone is entitled to there own opinion heck i might even be wrong but knowing what i know about 2 stroke engines the exhaust is the fundamental part in pulling air and fuel into the engine and a clear clean and dry intake track is key to efficiency not a maze of baffles designed to make backpressure. A engine is simply a vacuum pulling air and fuel in and pushing spent gasses out. There is a good reason aftermarket companys make good money constructing ways it improve on the intake track to delver clean unobstructed paths for air . You can take my advice for whatever its worth.
Again, a 2 stroke NOT simply a vacuum. You are talking 4 stroke talk. 2 strokes work largely on "pulses" which as I understand it has a lot to do with the sound waves that are created in the combustion process. These are a completely different beast that a 4 stroke where the less resistance on the intake side the better. And there are not that many aftermarket manufacturers that attempt to improve upon the ski-doo airboxes, because there is no point. Slp is one of few, and they simply use a different way to deliver the air to the stock air box. This has a lot more to do with people's oppinions, this is the mechanics of a 2 stroke motor.
ok your right you keep running that piece of junk garbage back pressure filled airbox and i will run my own intake and wont fumble around with that peice of junk and my sled will run as good or better then yours and i wont have to ever see that piece of crap again.
Air Boxes
Until you have engineering experience in ported enclosures jasn's conclusions seem valid. Knowledge will set he record straight that the air box, just like the exhuast, is in fact tuned to work in certain ways at specific RPM that enhance power delivery and peak power. If you motor runs at the stock RPM the stock air box will out perform pods hands down. There is a reason (other than intake air roar) that these boxes are configured the way they are!
Until you have engineering experience in ported enclosures jasn's conclusions seem valid. Knowledge will set he record straight that the air box, just like the exhuast, is in fact tuned to work in certain ways at specific RPM that enhance power delivery and peak power. If you motor runs at the stock RPM the stock air box will out perform pods hands down. There is a reason (other than intake air roar) that these boxes are configured the way they are!
ok eddy you have a point ported enclosures use harmonic frequencys to help air flow through a airbox i understand this i went to school i am not a idiot. The bottom line is that sounds all good and fine in a engineered world at sea leval at 70 degrees with 50% relitive humidity. That is not the world we live in the simple fact is we ride these sleds at 10k feet at subzero temps with low rh, with no barametric pressure and all that changes the whole setup and all it does is affects it in a negative way. The simple fact on a 2 stroke engine is the exhaust does the scavenging and does the work of evacuating the gasses and pulling fresh air and fuel into the engine. Bottom line it is my opinion that the stock airbox is heavy, is extremely hard to put in and take out and makes carb adjustments on the trail imposable. Air pods with a little home engineering to make a engine plate and close up to the hood is far better and makes me happy and my sled runs just great.
it makes it a little easier- if you adjust your fuel tank back as far as possible in its mounts.just lift your seat off by removing the fasteners in the bottom of the trunk and slideing it back till comes out from under the tank cowling .if yours is the earlier style the seat might have the extra bit at the front that runs around filler neck so youll have to take off the (stupid) nut and cap etc.then just loosen the nuts on the studs and slide the tank back as far as you can without popping it out from under the steering hoop.do it all back up & it should help
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