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Post by gtilley45 on Oct 29, 2006 22:31:27 GMT -5
What kind of airbox/filter set ups are all of ya'll running? The way it is done on my CRF is a little too rigged up for my liking and I'm trying to get ideas. Anybody have any experience with the K&K aluminum airboxes? I was talking to a guy that used to have one on a LSR/CRF and he said it worked well with the no-link rear end. Here's the only pic he could find of it.  I talked to another guy that had a LSR/YZ hybrid and here's the setup he had.  He said it was a radiator hose off of a backhoe, and a YFZ airbox eliminator kit from ESR. I like the looks of this but, 1) will this be any better than just getting a filter that clamps on the back of the carb? and 2) I don't really want to use a K&N filter, I'd like to stick to foam. The way mine is now, it has a short metal tube with a rubber clamp that clamps to the carb. The metal tube comes to about even with the rear shock, then it has a LT500 air boot connecting the metal tube to the 250R air box. All of this doesn't really fit together that well and it's a pain in the butt to take off and put back on. I will try to get a pic or 2 of it tomorrow, it's dark out and there isn't enough light in the garage for me to get a picture now. |
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Post by jrspawn on Oct 30, 2006 0:02:26 GMT -5
DO NOT DELETE THE AIRBOX!!!!!!!! Your asking for big problems if you do, i dont care what anyone says about that!
If im not mistaken on my no link YZ hybrid chasis i always just ran the lt500 boot and it worked perfect, im tryint to find pics if i have any to double check(got about a million pics on here, its like a needle in a haystack:)
Also, i know walsh makes/made intake tubes that are the nicest design i have ever used. Give them a call and see if they might have something laying around there or could make you something.
Justin
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Post by gtilley45 on Oct 30, 2006 7:08:27 GMT -5
Justin, I'd love to see a picture if you can find one. Was the lt500 boot coming off the airbox or what? I don't have any problem with the boot, but the metal tube is what I don't like. The way it goes on, it is hard to get it in the air boot and it rubs the frame. Thanks for the help Justin. Does anybody know anything else about the aluminum airboxes? Are they any good on a no-link? **EDIT** Here's the only pictures I could get.    |
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Post by gtilley45 on Nov 2, 2006 19:30:29 GMT -5
Well, I've really been trying to find a solution to this the last few days. I made an airbox out of cardboard last night just to get an idea of how hard it would be and what would work, what would need to be changed and that kind of thing. I think it could be done, but I figured it would be easier just to buy one if I could find something that would work. So, I called K&K about it today. They said they didn't have any of the airboxes in stock but they could get them. The guy I talked to told me he had a LSR/CRF with a no link rear end and this is what he was running. He said it worked well and was about as clean of a setup as there is. I'll probably order one when I get some more money. When I get it, I'm gonna go by a local exhaust shop and see if they can make me a tube to go from the box to the carb. I talked to a fabricator at work and he said they should be able to, they do stuff similar to that for them all the time. So, maybe I'll be able to get them to make a tube that reduces from the size of the filter flange down to the size of the backside of the carb that will clear the shock. I kinda know the main installer so I might be able to talk him into something. Also, outacontrol posted some pics on ATVriders.com of his setup on his Laeger CRF. It has a tube that Mark Baldwin made for it. I might try to call Baldwin and see if they still make these or have any laying around.
I know the guy that bought the last LSR/CRF hybrid Keith Little rode before they went to production rules. We have a race this weekend, if he's there I'm gonna make a point to go talk to him and try to get some information from him.
Any other ideas, opinions, or suggestions?
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Post by duneflyer on Nov 5, 2006 0:22:39 GMT -5
DO NOT DELETE THE AIRBOX!!!!!!!! Your asking for big problems if you do, i dont care what anyone says about that! ........ Justin I am curious as to why you said this. ESR Racing has been removing the airbox for years with great success. I had removed the airbox on my 400ex and ran it this way for years. I removed the airbox from my hybrid as well. I did dyno runs, both with the airbox, and without, and the runs without are stronger. So, I am curious as to your post. Thanks. |
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Post by jrspawn on Nov 5, 2006 15:31:51 GMT -5
Well its as simple as it sounds. Yes more air flow to an engine "Might" produce more power if the engine is tuned to spec. BUT, with no air box protection from dirt sand, you are asking for trouble. It is bad enough nowdays with running the lids off with sucking in fine dirt and sand particals. For MX removing your airbox would be the worst thing you oculd possibly do! For drag racing or just for trying to make the most power you can, removing the airbox is an option. But like said, plain and simple to understand. No airbox protection from dirt, sand, and mud, isnt too bright. Im sure any of us here that have actually ran a race or better yet a national event, the dirt(let alone mud if its on the muddy side) tends to get all over everything, just think of all the dirt/mud your airbox is exposed to in the rear wear most of the roost and debre(sp?) from landings and and hard brake/acceleration moves, would all that be just fine for Only an air filter, NO! But im sure engine builders and other companies would love you for not running an airbox,  I for one have blown too many engines due to sandy/dusty tracks. It doesnt matter how good or oiled your air filter is, dirt, dust, sand or so on will make it through, so having all the other protection you can will only help. But do whatever floats your boat i guess, myself along with probably all other MX racers will continue to run airboxs. Not trying to be ignorant or anything, just stating facts. Thank you Justin |
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Post by duneflyer on Nov 7, 2006 19:54:02 GMT -5
no racing done here, at all. I guess I didnt clarify about my riding conditions. I also dont do mud or anything of the sort. 95% of my riding has always been done in the ISDRA (glamis) . If I was to run in the mud or track, then that might be a different story. I know, I know, you are thinking, I always ride in the sand, which is true, but I have never had a problem, 10 years riding there, and not one blown motor. I also religiously keep my filter clean though. But like you said, to each their own
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I for one have blown too many engines due to sandy/dusty tracks. It doesnt matter how good or oiled your air filter is, dirt, dust, sand or so on will make it through, so having all the other protection you can will only help. But do whatever floats your boat i guess, myself along with probably all other MX racers will continue to run airboxs. Not trying to be ignorant or anything, just stating facts.