Mock Box Intake

[was92v]

Originally Posted by zed

this is the answer here.

if you are trying to do some kind of ram air you push more air through the carb but you have to also pressurize the float bowl too.

pods and CV's don't really mix well either, lots of work won't even help.

Anything besides the stock airbox will require a lot of changes to the carbs. The least amount of changes required to achieve a performance boost on the EX is K&N's and a jet kit. If the bike is running great now, without any air filter at all, then it will work with individual filters just the same. If the issue is that the air horns need to be on the carbs to run right, you buy filters that are large enough that they will fit inside the filter. It's been done before.
Or stretch the toes of panty hose over each one, and pop a couple of rubber bands on there to hold em on and call it a day.
Don't really do that. I did once on a 2-stroke. Sucked them right into and through the engine and blew them out the exhaust. That was how I knew when it happened, they hung on the baffle tips and they were waving out the end like little flags that said "Dumb Ass....
A four stroke would not tolerate that very well.

The EX does not have a pressurized air box, it just has an air box. To build a pressurized box and then tune the carbs to work with it is a very complex thing to work out and get right. Routing the bowl vents to the air box is just the beginning, all of the tuning starts after that.
I guess if Digifox is just wanting a project to work on, it would be something the give months of fun and frustration. However if the intention is to actually ride the thing before next summer, I would put the designing, building and tuning a pressurized ram air system on slow simmer and just figure out a way to get some filtered air into the engine.