Hi,

I have a 02' 800 edgeX with V-Force2, 144 studs, TI Valves, MSRP trail silencer, Boost Bottle, TempaFlow and tied a race with my little brother who has a 01' mxz 600 w/ 144 studs the rest is bone stock. My sled should be faster right?

I raced him a couple times in the same field to see if maybe he got lucky, all with the same results. We were on packed snow about 1000 yard stretch. We would be dead even the whole time, every time, top and bottom end. Both of our tracks are in good condition. My sled should be a lot faster right? Do you think it might be a problem with my clutching which is stock? It almost feels like the sled is geared down because it seem to feel lots of revving with no go'ing while racing him. So last night I took the chain case off to make sure it wasn't geared down from the previous owner (man they don't make it easy, hard to reach bolts) and its not. It has the stock 25/40 gears.

What do you think? Please help, driving me crazy!

Thanks,

Brent

I would be suspiscious of the clutching. From what you are saying, it sounds like your belt is slipping in the clutches. Also, one of the first things to do is change the stock clutching. I would at the very least go to a different helix. The stock 45/36 helix should be changed out to something with a more aggressive initial angle. I used a 54/36 in mine, but I am a heavy guy also. A 50/36 or a 52/36 would probably be a good choice. Also, if you still have the gearcase open, gear it down. I used 24/41 gearing in mine, and it worked excellent. You will be told a lot of times that gearing down will slow you down. It is not always the case. On a couple different occasions, gearing down actually increased my top speed. The reason is because the belt will shift out further in the clutches. If you are willing to change out more stuff, there is a lot to be gained in the primary also. A popular setup seems to be 70 gram flyweights and a 165/310 or 150/310 spring. There are a lot of guys on here that will chime in with good setups. The stock clutching on the 2002 XC 800 left a lot of performance on the table. You can easily wake it up significantly.

No b.s. but my 02 500 beats mxz 600's. I got 8000 miles too ure sled is deff. screwed up. Check the belt out is it about ready to blow or something? I also only weigh bout 125 too so i beat alot of sleds with the 500 but the mxz's were never a challenge?

first off,loose the boost bottle and u say u have a tempa flow what size jets u have in it,like rtoner said get rid of that stock clutching or u will see alot of your bro's 600 tail light...gear it down 24/41 :beer2:

My buddy I ride with all the time has a 2001 600mxz (stock)
There is no comparison. My stock 800 rips him up. We are close to 80mph or so, But I'm still pulling on him all the way.

That's what I was thinking. They first engage at 3,000rpms. Good, Bad? Someone recommended all this- almond/red or erlandson yellow, 70 daltons, erlandson black #2, and dalton 52/36 helix. Gear to 24/41. Mains 480 to -20F, needle stock clip. What do you think. I weigh 170. Please excuse my ignorance but I never messed with jets before I'm guessing that's what this means "Mains 480 to -20F, needle stock clip." I've taken carbs apart to clean and noticed the jets but never changed. Let me know, thanks. When I installed the tempaflow, Holtzman said leave the jets stock? Not sure what to do. I'd hate to do all this work and still tie a race with my brother.

Should I just call my dealer for the following or does anyone know of some place cheaper. My dealer is very pricey. I have to try and keep the price down so my wife doesn't find out, ha.
-almond/red or erlandson yellow
-70 daltons
-erlandson black #2
-dalton 52/36 helix
-24/41 gears
-Mains 480 to -20F
-needle stock clip

Thanks Again!

I put a brand new polaris belt #3211080.

That sounds like a good setup to me. Your engagement rpm definitely needs to come up. A little over 3000 sounds about right for the stock spring and weights. I am not sure on the best place to get the Dalton parts. I would order the gears and the black secondary spring and yellow primary spring through Erlandson's website. I have had good success with them, and they are fairly reasonable. I do not know about changing the jets with the tempaflow. Any other guys mess with them? Otherwise, the clutch setup you listed sounds like a winner. Trust me, I do not think you would lose the rematch with your brother. You are probably looking at about $300 worth in parts when all is said and done, but the difference will definitely bring a smile to your face!

rtoner70 you're great! Thanks, what does "needle stock clip" mean. and do you think I could just get away with doing-
-almond/red or erlandson yellow
-70 daltons
-erlandson black #2
-dalton 52/36 helix
-24/41 gears

and not
-Mains 480 to -20F
-needle stock clip

the carb ajustments will help the motor run better on top , It should only take 1/2 hour to change jets and check the needles. My 2001 xc 800 NON ev would smoke a really fast stock 2001 mxz 700. Your clutching has problems! run a max rpm of 7700~7800 on a long pull , think about 24/41 gearing you should not loose any top end. Once the clutching is working good traction will be the issue!

Needle stock clip means the clip on the needles in the carbs is in the center position. The needles in the carbs have a c-clip on them to adjust how far into the jet the needle rests. There are 5 notches on the needle that you can put the clip on. The stock position is in the middle notch. There should be 2 notches above the clip and 2 below the clip in the stock position. By lowering the clip on the needle, the needle rises in the jet, and makes the mixture richer. Raising the clip on the needle leans it.

I would go ahead and try the clutching changes, and see how it goes. Might want to check the needle setting, just to make sure it has not been moved. I would also suggest to leave the needle setting in the stock position. The clutching alone will help greatly. If you think you need jetting changes, that can be done later.

Thank you all so much!! I'll keep you posted on how I make out with the new clutching/gears. I'll check to make sure its in the stock position but will mess with the jetting later if needed.

I got my helix in the mail today and its not the same one as I ordered.

"pockets" recommended me getting a dalton 52/36 helix so thats what I ordered from mcbperformance.com

It finally came in today and its a dalton 52/40-36 not 52/36.

Whats the difference??

Should I send it back and get the 52/36 which I ordered. mcbperformance.com claims it will work the same.

Let me know, Thanks!

P.S. I don't really want to sacrifice any top or bottom end.

The dalton 52-40-36 will give you a much better mid range hit than the 52-36. Bottom end and top end will be the same on both.

Cool, so I'm probably better off with the 52-40-36? I do mostly bumpy trail riding, never lake.

I was wondering if the same clutch set up could be used for a 03 800xcsp, mine seems like it could use a little help. any suggestions?