yer comments pls this is a race application only


cone filters or keep the air box


(studs) i got yer letter its all done

If you are dragging the sled, go with no filter. If you have snocross in mind go with the K&N's.

so remove the air box and just keep the karbs open?? these are 39mm d slides are u sure cause these are really picky with air ratios

WOW.. whatever you do dont do that. Removing the air box is 10 jet sizes right now. That thing would be locked up by the time you pulled it around after the race.. sure you would win but that would be the absolute end of that motor period. Also those kheinin carbs do not run good without an air box. you can however gut the box, leave the shelf in it. But take out the rest this will help you out alot. Also i would run slp air horns if i where you. DO you have a boost bottle?? I would recomend getting one of those as well. What are you runnning for pistions? Stock?? If you are go to wiseco pro lites.. Also what cylinders do you have 220's or 824's??? this also makes a difference on what jetting you run in the sled.

Awhile back I think he said it was a 220.

I run 220 jugs and yeah i do have a boost bottle i was looking at the foam inside my air box it looks awfull and and far from being clean i dont have the air horns from slp ??? am assuming this is a new bottom cover for it ?
i know i gotta keep the air box but i thought there would be a way arround

There is no way to get it to run good with those carbs. Maybe if you go to some lectrons or maybe some makunis. but the D slide khenin's are just temermenetal. AS far as the slp air horn go they make a huge differnce. I would just put them on and you should be about as good as your going to get. I wouldnt recomend going with the tempa flow on these sleds either... doesnt seem to want to run the greatest with it on.

heres the link for the Air horns for your XC $79 is really resonable

http://www.startinglineproducts.com/catalo...1&productID=369

I know those 39 work like crap and will never run like they should its simple there crap but what to do ??? lots say the power packs do alote some say other things but really its all about the carb so what about changing them what would be my optons in other carbs

If your serious about racing I would say get some Lectron carbs. Its the only way to go if you really want to race your sled. The carbs that you have are not going to help you out any. Get ride of em.

i think next summer im going to get some filters that go right on my carbs,i cant stand that air box taking up so much room in there . i just have to figure out where my cdi box is going to go.

Khehin carbs wont work so good with filters. Remeber that your going to have to jet up alot because filters suck in alot more air. I also dont know what your going to do with your ventlines that go onto the airbox because if they are not hooked up the sled will run like sh*t. The only way to do this effectively is to get a differnt set of carbs. Plus the air box on this sled is also very easy to guy. Just take out everything but the shelf and you will be fine. If you want more performace out of it then put on the slp air horn kit that I mentioned in the post above. IMP taking the box off is a stupid idea because most filters dont eliminate all the dust and junk from being sucked into the motor. So your going to have to buy prefilters for them as well as the filters. I just think unless you have a big time performance motor or alot of mods done to this one its a bad idea to scrap your air box. Any second opinions on this????

what shelve are talking about the one in front of the cabs inside or the one laying flat on top foam goes ?? and whitch plate



u can run with out the air box but it wont run like it should and yes those air hose need to be conected or eles it will run like crap

im sure he's talking about the plastic shelf in the airbox... the only one in there.

only resen i want the filters is so my sled will have a cleaner look under the hood if ya know what i mean.

Yeah but you have to understand if your sled wont run worth a crap then it isnt worth worth. Cosmetics over function is never a good idea.

Witch shelve????????? the one that slide in the slots and is vertical or the one laying flat on top for seperating foam from rest ????/ there 2 plates in there

now witch one

leave the top one in. thats the shelf the rest can come out.

so basicaly just the foam thats it

basically it will help it suck more air throug the box. Isnt your foam dirty anyway i know mine was terrible. Getting rid of it helped alot.

oh yeah its awfull but i cleaned everything and took out the separatoer plate from the top i guess il have to put that back in there

i understand what they said perfictly... why wont this work with different carbs withought the vent hoses?

u can fix the problem all we need are new carbs then the air box can go am looking at lectrons and psi carbs also the crank shop as them this would fix the issue but starting @ 500$ a pop

Cr, if your vent hoses come disconnected...you'll prolly know.

those vents alwayse come off there hard to keep on theire and its crutial to have them on not enough the carbs are crap u gotta keep looking at those hoses

Are you talking about the vent lines??? If so i zip tie mine on because i always have the same problem with those things falling off at random times during my ride, you could also try getting new lines. They are 8 years old any may be a fail deal weather checked.

My lines never come off, although I know someone with a 04 Switchback 700 and their lines fall off from time to time.

yes they must be old and need changing there awfull even the zip ties wont keep them on they still come off
there awfull

New ones should be cheap and if they are weather checked they might be sucking air effecting performace...

i have small clamps that hold mine on, work wonderfull the've never fallen off before.

what kinda clamps are they is it the quick release ones? cause tie wraps r a pain in the ass wen u take yer air box off all the time i think am jst gonna go buy new ones today

just got my pipes instaled il get u some pics

Nice what kind are they???

i got a set of twin HTG hot to go and got some jaws race cans made am just finishing painting them il have a pic soon


wat about 165 compresion sounds nice hey

Your running 165 for comp. on both cylinders??? That pretty high did you just rebuild the motor or somthing. My 98 with 220 cylinders ran about 140 or so after rebuild, 165 sounds like its really tight. Do you have shaved heads???

am running sle heads with p70 domes what u think 165 is to much ???

just seams really high to me, im running nearly the same thing with PSI twin pipes, and wiseco pro lite pistons. my compression is maybe 145 tops. Maybe mine is low???

huh i dont know wat to say i was told higher the better but mine are 165 there suppose to be 125

but as i said there lots of thing on this that may affect the compression the motor was rebuilt about id say 5000milles ago its been reedone but it aint fresh anymore are r things that i think might have changed my compression or help it

Slp cheeter heads of course p70 domes running 94 octane and isopropyle i use bleu marble oil

boost bottle , vforce deltas, reed spacers,


or maybee its just yers getting old LOL

here the a pic of the pipes

Found out my rings are bad, not getting a complete seal thats why my numbers are lower......

Those are nice looking pipes I like how the silencers angle down and out.

huh its a little loud lol

How much was everything? I just got a MBRP silencer (race version) since I don't get to ride much...sounds nice and is still somewhat trail friendly...I haven't gotten stopped "yet".


Btw, hemp, has your sled ever bogged down going accrost the lakes? I took mine accrost the lake today and it started to bogg down when I hit 7000rpm doing about 90...It decided to go again at around 3000rpm (it wasn't my rev limiter). There was about 18" of powder...I don't know if it could have been coming through my hood vents or not.

Very possible snow got in there or sounds like yes misfireing maybee a plug issue mines has never bogged like that no the only bog it add was off the line but always make sure those vacume hose on the carbs r on there solid it makes it run like night n day i cant believe it also a other thing i tried is that plate in the air box i took tha off and it helped get rid of that off the line bog but u need to rejet for that but look at yer plugs just change them n go from there its the cheapest way

yep the motor is deffinatly starved for air, just gut the box, make sure that your lines are in good shape and you should be good to go. But like HEMP said make sure you rejet!!!

I really don't understand what is going on with it...I ran 80-90 accrost a field the other day, and no trouble, on the way back I hit 65 and it just bogged down untill I hit 20.

The same thing happen on the trails today, I ran without a problem for awhile, but when a 800 came up behind me and I started riding hard it shit the bed, bogged down coming out of 2 corners till the 800 passed me, then it opened up again.

It's been doing this ever since I put in the Champion plugs, I'm going to check them later and see if it's running too rich/lean.


While I was on the trails I also thought about the air lines, but they're fine.

id look at yer plug color first right and i can prob garanty that yer running way to rich try to get yer plugs as to be as gray as u can personaly ive never tried champions NGK as always being good to me a bad luck here n there but thats life ive being running these new plugs NGK as out the irradium plugs br9eix but am soon gonna be putting in br10es its getting warmer herealready in the season so lets keep her cool u can also try mixing a little alcohole with it that way yer almost sure never to foul a plug or run to rich yer not getting all yer power if yer running lean


Find out what jets yer running

did u beat the xcr800? just wondering.

he red lighted the 1st race i won by default and the 2nd race i got a bad take off and he got me in the last 5 to 10 feet got me by half a machine i ad him but i scewd up but they also screwd up cause when he red lighted the 1 st race i was suppose to get a sled lenght but i dint anyways amateur race so watever i dont care i beat him on is red light and almost got him on a horrible take off not bad for a little 700

What year was the xcr800?

Looks like an 01

Ment 03 not 01 boy was i tired.