NO LID ON AIR BOX???????????
#12
03-02-2003 | 04:38 PM
Range Rover
Joined: Mar 2003
Posts: 196
Likes: 0
NO LID ON AIR BOX???????????
They also make inserts that you can put in the airbox. They have there own little filters and you get a ton of air. You can cut as many into the airbox top as you want. All you need to do is get the 1" filters and cut a 1" hole and insert them. they are rubber with foam filters that you can take out and wash
#13
03-05-2003 | 02:01 PM
Trailblazer
Joined: Dec 2002
Posts: 76
Likes: 0
NO LID ON AIR BOX???????????
Dynojet is near my house and they did all the mods you are talking about, and it did great on the dyno. With the DMC exhaust, Yamaha rejetting, modified snorkle and six holes cut in the lid with pre-filters I dynoed at 37hp. Dynojet then installed a Pro design assembly with a K&N with there stage two jet kit and it dynoed at 43hp. I felt significant gaines. As far a water entering my filter, I rarely have to wory about that:-)
#15
03-11-2003 | 11:24 PM
Pro Rider
Joined: Jul 2002
Posts: 458
Likes: 0
NO LID ON AIR BOX???????????
Originally posted by: Raptor010101
When i spoke to the guys at dyno jet they told me that running the air box lid off on the raptor will not allow you to gain as much power on the low to mid range as if you just cut out your snorkle, they said you will still get some low to mid rangfe gain but less with the lid completely off... they said it is the air velocity that matters most, the small opening of the snorkle is made to funnel the air directly into the filter at a greater velocity much like blowing through a strw as compare to a roll to toilet paper. they said that the only gains made with the lid off wil come at the very top end of your RPM and will not be seen by most sport riders. they said they have the dyno results to prove this......... I would like to hear your experience on this ???
When i spoke to the guys at dyno jet they told me that running the air box lid off on the raptor will not allow you to gain as much power on the low to mid range as if you just cut out your snorkle, they said you will still get some low to mid rangfe gain but less with the lid completely off... they said it is the air velocity that matters most, the small opening of the snorkle is made to funnel the air directly into the filter at a greater velocity much like blowing through a strw as compare to a roll to toilet paper. they said that the only gains made with the lid off wil come at the very top end of your RPM and will not be seen by most sport riders. they said they have the dyno results to prove this......... I would like to hear your experience on this ???
Air velocity matters when you're trying to get the fuel to atomize and vaporize in the intake air. Also, high velocity allows for better combustion chamber penetration of the fuel/air mixture.
BTW: did you notice it's a lot easier to blow more air through a roll of toilet paper than a straw?
Airbox Mod Theory
This link applies to cars, but the idea translates well to the ATV airbox lid mod.
