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pics of esr air box eliminator installed

9K views 30 replies 7 participants last post by  bushwesl  
#1 ·
anyone have pics of the airbox eliminator installed, im looking at using a different kind of filter for it, but i need to see how everything lines up in the quad
 
#2 ·
What other kind of filter were you planning on using? The one that comes with the ESR eliminator kit has a slight bend it it, which positions the rear of the filter away from the shock, but then it angles back in towards center of the subframe so that it's not sticking out and getting in the way. I unfortuneately don't have any pics, but hopefully I explained it well enough.
 
#3 ·
well im going to be riding moto cross with it, and i really dont trust k&ns since they are just a 2 ply filter, but on my ltr i have a fuel atv intake and they use a special kind of filter, that gives more filtration, and more air flow because of the inverted end cap and the added size of the filter. i run no air box on the ltr and ride in very dirty conditions and never have any problem with it, i also use a outerwear on it. and also atleast on the ltr, no other filters showed significant power gains over stock, but the fuel atv intake gave an extra 3 hp
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#4 ·
my new idea for it possibly is to just keep the stock intake tube and where the airbox mounts to the frame, and then just cut up the rest of the air box and put on the biggest filter i can fit and keep practical. really the main reason i want to do this is so i can run a centermount pipe
 
#6 ·
I've been thinking about a similar setup for use with the centermount pipes. I was wondering if the james lucky and ebay type airbox eliminators would work with the centermount. They are basically an aluminum copy of the front portion of the OEM airbox. They still use the OEM air boot and the OEM size filter. I think the filter would be in the way of the centermount muffler unless you move the whole thing to the side or had a filter that pointed outward a bit.
 
#9 ·
yeah im going to get a very long filter too for the most airflow, do you think it would be worth going to a different intake boot or is stock going to be good enough? if this works as well as i think it will it should be a lot better air flow than the esr set up
 
#10 ·
ESR claims that the stock intake boot is too restrictive, it does get real small where it goes under the frame near the shock. You might be able to use a LT500 boot for better flow, but I'm told that it is longer.
 
#14 ·
I personally think that airflow in the esr set-up is more than adequate since I run a 210 main jet on my 38 a/s on my 350 and I ride at sea level (literally).
What do you have your muffler mounted to? I don't see any brackets or bolts? Is it upside down? Looks like a real tight fit with that no-link.
 
#15 ·
well im really doing it for the extra filtration, because these filters do a lot better than your standard K&N

Maybe you could take the part number of the K&N esr filter and cross reference it to your filter brand or a similar one.
 
#16 ·
What do you have your muffler mounted to? I don't see any brackets or bolts? Is it upside down? Looks like a real tight fit with that no-link.
That's definitely a center mount pipe. Is it the spark arrested version? I'd like one of those... You're not a kidding on the tight fit either. I have the same setup and everything barely clears. Although, I do get a little bit of rubbing on the silencer from the shock, nothing serious though.
 
#18 ·
That's definitely a center mount pipe. Is it the spark arrested version? I'd like one of those... You're not a kidding on the tight fit either. I have the same setup and everything barely clears. Although, I do get a little bit of rubbing on the silencer from the shock, nothing serious though.
The spark arrested version will NOT work without rubbing on the frame CONSTANTLY. I had to grind down part of the shock ring adjuster so it wont hit :angry:
 
#19 ·
Yup, I have it upside down since it is super tight and I have unavoidable rub marks on the silencer. I can only imagine how a centermount can be made to work on a CR500 link rear :unsure:
wait so do you think it wont fit with the cr500 link? because thats what im using.
 
#22 ·
The CR500 is offset to the right, but the shock angle is more straight up and down versus the no-link is angle back more than stock, I think. Wouldn't the angle on the CR500 perhaps give you a bit more room??? I'm just guessing here, never owned either rear set up.

You may have to find someone that will let you borrow a centermount for mock up before you go and buy a new pipe.
 
#23 ·
yeah ill also ask eddie if hes ever put one in a quad with a cr500 link


or does anyone have any measurements of how much space the centermount needs around the shock area?
 
#24 ·
Is the top shock mount for the no-link and CR link close to the same position? It looks like shock being much higher is causing the tight fit on Norcal's no-link. It's near the spring and the large nut. On a stock link, it would be near the top portion of the shock which is smaller.
 
#26 ·
if you want to go without a air box, I would never run anything other than the stock 250r air intake boot with the stock size air filter mounted on the back. ESR doesn't know what they are talking about it they are saying that this intake boot is too restrictive. Dave Moore racing was curious about this same topic so he did some dyno testing with the ESR airbox eliminator kit vs the stock 250r airboot with a stock replacement K&N air filter attached. The stock air boot with K&N was worth 3 hp over the ESR kit. That ESR kit is lame and has an extremely small air filter unless they changed from the one I have seen. Honda designed this air boot for a reason and the intake tract on a 2 stroke works in the same kind of matter that an expansion chamber works for the pipe. Why would you take something off that goes from large and tapers for a ram air effect.

I run a centermount pipe as well. I went to an agricultural irrigation pipe place and bought a chunk of 4" aluminum irrigation pipe. I then took some 3/16 to 1/4" flat aluminum plate and made a bracket to weld to the pipe. I welded a small mounting tab on the top subframe rail and threaded it so I could run a bolt through my bracket. I mount one end of the aluminum tube to the end of my stock air intake tube, and the other end I mount my K&N. I run an outerware on the filter. This is my sand set up. Muffler doesn't interfer with the filter at all.

With a Pro-X 370 I ran a 52 pilot, DEG in middle clip and 175 main.