What to do about an air filter

[TwoHundredEx]

See last post




Since I can't use the modified shock mount anymore, I have nearly no room in between my carb and shock. I'm stumped on what to do. Theres not nearly enough space for a clamp on filter, and not enough to run a boot around the shock.
Since the shock is angled I have about 2"s at the top, and about 2.5 at the bottom, maybe a little more/less.
I know it would be kinda redneck, but how would a piece of breathable foam work? My dad owns a mattress manufacturing company so I can get any kind of foam possible. I could shape it so it looks like a super mini UNI filter.
Any other ideas?

[NINJA]

Post some pics and then we'll really know what you're dealing with.

[84honda200s]

yea pics would help allot. but as long as you have a hook up to some foam id say try it. then get filter treatment.

[Mr.Jake]

i use house vent filters for mine, just take 2 and elastic them around the carb. But soak em in gear oil first.

[TwoHundredEx]

i use house vent filters for mine, just take 2 and elastic them around the carb. But soak em in gear oil first.

Do you have any pictures of this? How big are they? They would have to fit over a 34mm carb.


Heres a pic of the area. Couldn't find the stupid tape measure but I'd say theres around an inch at the top and 2.5-3"s at the bottom.
Wondering if it would be better to make the foam flat, or wider at the bottom.

[Dirtcrasher]

Hey bud, we all love your conversion. But, you can't mess around with a filter. It HAS to be adequate. This isn't a half arse built go-cart. Let me ask ya this, if you could change the intake angle at the motor, could another angle squeeze in a place for a radiator hose that adapts to a K+N filter or something.

Give us a back shot of this too!! In other words, a pic of the shock interfering...

[TwoHundredEx]

Hey bud, we all love your conversion. But, you can't mess around with a filter. It HAS to be adequate. This isn't a half arse built go-cart. Let me ask ya this, if you could change the intake angle at the motor, could another angle squeeze in a place for a radiator hose that adapts to a K+N filter or something.

Give us a back shot of this too!! In other words, a pic of the shock interfering...

I was thinking about changing the angle, but I wasn't sure if that would effect the way the engine performed.
I've got a couple rad hoses I can mess around with and I think I'll try that in a few minutes.

I'm not quite sure I understand what you mean about a pic of the shock interfering?
Sorry.. I haven't really woken up yet.
You want a pic from the back, or.. from an angle?

[Dirtcrasher]

If you look from the back, I'm guessing that it's the shock spring that your running into. If the carb could be angled a bit more to the left, is there room for a hose or something??

[TwoHundredEx]

Yes it was the shock that I was running into.
I found a rad hose that had a nice bend it in, cut it and this what I came out with.
Still seemed to run okay, but I didn't ride it, just started it and let idle.
There's just enough room to run a hose now. I'm hoping to find one that'll fit the carb, and run a K&N that I have here.

[Kintore]

What i would do is find a real hard bend for a carb boot, what you have there looks better than before. You might be able to squeeze a filter in there thats very long and skinny. Like a long ass KN or something?

[Bryan Raffa]

uni makes small two stage pod filters.. you can get them with a bend in them also..2" round

http://www.polyperformance.com/atvsh...7&cat=0&page=1

[TwoHundredEx]

Well I got a carb boot, and filter on it, and now I've got carb problems!
It took forever to start, then when it did the revs slowly went up, and it was fine up to 3/4 throttle, at full throttle it bogs and surges. I thought it was because the carb was angled, but nope. I put it back to stock and did the same thing.
Anyone have any ideas? I did take the carb apart to clean it, but thats all. Maybe it needs to be cleaned again?

[Tri-Z Pilot]

Filter too restrictive causing it to run way rich? Try takin the filter off and see how it runs.

[randall_pitz]

when you cleaned it did you tightin the jets good one may have came loose happen to me once

[TwoHundredEx]

Filter too restrictive causing it to run way rich? Try takin the filter off and see how it runs.

Thats what I thought at first too, but it didn't help. Definitely ran better without it, but still ran like crap.

when you cleaned it did you tightin the jets good one may have came loose happen to me once

Bingo, we have a winner.
Tightened it up and it ran fine for about 5 minutes. Then it started doing it again. Turns out this time, it was because the carb. was on an angle. Put it back to stock it runs like a bat outta hell. I seriously can't beleive how fast this thing is. I can't imagine what a built 250R would be like. I'll definitely try to get a video tomorrow. Nobody else is home, otherwise I would've got one earlier.