how to make a air filter??????

scooter trash · Post by **scooter trash** » Fri Nov 16, 2007 12:13 am

hi, im 13 and am new to this site. i have seen Dac has made lots of parts one of witch is a few air filters.i have a 86 honda spree. Can some one teach me how to make an air filter for it that lets a little more air flow.
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86 Spree- smoothed intake, repainted,clened out pipe

Dac · Post by **Dac** » Fri Nov 16, 2007 10:48 am

i make all of mine because i have bore kits and other add ons. If you are going to make your own filter you need buy a new jet from honda. The jet is inside the carb so you have to know how to take apart the carb. They cost about 5$ and if you dont get one you will fry your motor.

i have made tons of filters. some working good, some failing. The main idea of an air filter is to let air though but nothing else. no dirt, no sand, and if possible no dust.

here is one of them i made for my elite. It was made by cutting a mountain dew bottle 2/3's the way down off. the tip of the bottle fit right in the outer edge of the carb. duck taped that to the carb and zip tied it. Then i placed a painy hose around that.
Did it work? No , it gave me slightly more power, gave me a cool sound. how ever it let tons of dirt and dust right though it. had the clean my carb often and im lucky no dirt made it into my cylinder or it would have put some grove in it.

How about this one?

i didn't make this one i bought it for 15$ and slapped it on. again, gave me a little better performance. i didn't know you had the oil the foam filters so mine did let a little dust though. but i didn't upjet so i ran to lean and burnt up my cylinder.

And my latest one.

This is a watter bottle i got with mountain bike along time ago. I ripped apart the lid to find out that it fits perfect around the carb. drilled some holes and put some zip-ties around my carb holding the lid on there nice and tight. Next i took bottle and cut the bottem off. stuck a sponge in there (after soaking it in oil then getting out as much as possible). put the bottle on, put the sponge in. And it works good.
Keeps all the dirt out and gives me performance. But you got to remember im running a 72cc kit with few things stock. You might want to just stick with a stock box. It gets better flow then you think.

scooter trash · Post by **scooter trash** » Fri Nov 16, 2007 8:35 pm

thanks

Kenny_McCormic · Post by **Kenny_McCormic** » Sat Nov 17, 2007 9:22 am

A spree will not see any sort of gain from a better flowing filter all you will get is a PITA rejet and no performance gain. If anything just clen out the holes in the lid and replace the filter (the original one will be trash by now). And whenever you do anything carb or airbox realted always do plenty of plug hops to make sure you arent running lean or you will be buying a new top end real quick. The admin on this site did some testing an couldnt even get a real AM filter to work, these engines are really touchy and best not expeirimented with un less you know a whole lot about 2 stroke engines.

scooter trash · Post by **scooter trash** » Sat Nov 17, 2007 1:34 pm

refresh my memory, how do i do a plug chop

Kenny_McCormic · Post by **Kenny_McCormic** » Sat Nov 17, 2007 2:42 pm

You ride wide open thottle for at least a full minute with a fairly new plug and without ever relasing the throttle kill the engine, hold it at wot until the engine stops compleltly thne rekmove the plug the ceramic insulator inside should be a nice coco brown color, lighter than coco brown is lean and darker is rich. Alternativly you can get a fairly acurate reading by running it WOT on the atand for a minute.