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FYI- K&N filters are just 5 layers of medical gauze, filter oil and wire mesh. If'n you can figure out how to do the pleats yourself, you could always try to make them into K&N style. Or get the UNI's and load with them. Not sure where you're going with this, but thought I'd throw that out there.
I'll tell you what I did with mine on my 450, I took a propane torch to the back side of the housing where the filters were glued in and heated until the metal just started to change color. Glue went POP, fell right off. What didn't fall off got chiseled out with a screwdriver and hammer. There wasn't much the glue really didn't like heat at all. Coat of paint and uni foam and done.
One thing I will note the pleats add a sound deadening muffler type thing to the intake noise. Now, I have a considerable amount of throaty throttle noise that comes on at full throttle and at at around 7k. I'm Ok with it. ;D
The oiled filters last significantly longer. Not sure about the Uni's, as I have little experience (the XL has them though). But, the K&N's can last for years between cleaning. Paper filters are old technology and need to be changed often.
They look good.
Had a hell of a time with some a few years ago, maybe earlier models had different assembly?
When the paper was removed and the glue chiseled out, the metal 'box' fell apart andmake life quite difficult trying to hold the pieces together
Yeah I didn't even glue the foam in, made it slightly oversized so it presses against all the sides. Hasn't fallen out in the last year or so. Super easy to clean that way, just pull the covers pull the foam out and wash and re-oil. Don't even have to pull the housings. Not like the bike is gonna see a lot of dirt so once a year in the spring cleaning does the trick.
There's no reason to spend $30 on NOS filters with 40 year old paper. I used the uni filter trick on my CB350. I didn't have a heat gun so I carefully pulled them apart, then reassembled the screens and the sides in a thick line of 5 minute epoxy, weighted down the top, and let it sit for a day. If you cut the filter foam just a tad bit wide, it will have a little tension when you put it in, keeping the foam in place. I guess if you were really concerned about it falling out you could put a couple rubber bands around them.
Dont forget to oil them lol.
Oops, didn't see Frogman above me had posted about cutting the foam a little wide. But yeah
Yep, lookin like the Frog-miester wins the prize. I didnt get around to doin much w mine, as I really dont need it at this time. Rainy day project. Im just gonna uni-foam them.
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