[pierbridge]

Nice pictures 440.....those are some big nobs on that track...hang on tight...[]

 

[X-Treme3x]

Originally posted by pierbridge
[br]Nice pictures 440.....those are some big nobs on that track...hang on tight...[]

Thats my ripsaw [] Only put 12 miles on this year but I did some dead stops from 5500rpm and whhooohaaa...she hooks up 2x has hard as it did before. I really cannot wait to get to some drag races so the girl can flex its muscles....snow is not looking good. I have never seen such a shitty winter. The weather is going to have to change in the next 2 1/2 weeks before the frist race.

 

[X-Treme3x]

Originally posted by gulby
[br]The sled is at my parents place at the moment so I can't go out and look but from what I can remember they are pretty cranked, I would say that they definitely need to be rebuilt the guy that I got it from said that he never did it. Would loosening them help steering etc. To take the rear shock off do I need to pull the entire skid or can I just prop it up and take it out. Thanks for all your help guys and if any one has any experience with this sled and know anything that I can do to make it even run better and harder let me know. I want to have a finely tuned older sled that can smoke my buddies newer and high cc sleds on the trail and in the ditches. Thanks
[galleryattach=6659]

If you are really looking into getting stuff done you can always get your head shaved humm .010-.015 thou of and inch for starters. If you want to go a step further you could always get your cyl ported. Humm...I'm not sure about your shock...you might have to take your skidout.

 

[xcr440]

Originally posted by gulby
[br]The sled is at my parents place at the moment so I can't go out and look but from what I can remember they are pretty cranked, I would say that they definitely need to be rebuilt the guy that I got it from said that he never did it. Would loosening them help steering etc. To take the rear shock off do I need to pull the entire skid or can I just prop it up and take it out. Thanks for all your help guys and if any one has any experience with this sled and know anything that I can do to make it even run better and harder let me know. I want to have a finely tuned older sled that can smoke my buddies newer and high cc sleds on the trail and in the ditches. Thanks
[galleryattach=6659]

Depends does it dart or is it hard to steer on hard pack.
If you can get to the top bolt on rear shock then you can take them out with out removing skid.

 

[X-Treme3x]

I noticed before that Skip and ZRpilot mentioned that had a slight bog. I told them to adjust their airscews to 2 turns out. Said it helped but they still had it...Change you needle jets from stock (285 P-4) to 159-P4. That should really wake the sled up from a stop when you punch it. I noticed since I changed them when I sit at 5500 and punch it..it used to get this slight bog in it..nothing major but I knew it was there. Now I sit a 5500 and punch it....bog is gone!! You can really notice the difference....just some food for thought XCR 440 guys.

 

[Zrxpilot]

When you refer to needle jets, are you talking about the needle in the slide? How much do they cost?

 

[X-Treme3x]

#28 on the diagarm. They only cost me $18CDN per 1 jet.
[attachment=25172]

 

[Zrxpilot]

Thanks for the pic. Can you install these from the top or do they go in thru the bottom of the carb?

 

[X-Treme3x]

They go threw the bottom. You have to remove the carb from the engine, slides/choke/gas/oil/vent all of them. Remove the bottom of the bowl then remove the jet. You will see the peice that the main jet screws into...thats the needle jet. Take a standard size screw drive and push/tap it threw...should only need a light tap and it will fall out. When you goto replace the 285 P4 w/ 159 P4 you will see a small slit in the needle jet. If you look at the bore the needle jet goes into you will see a pin..they have to line up..needle jet can only fit in 1 way. Push it in and then put everything back together....then tell me if you notice a difference in the sled.

 

[CanadianXCR]

who recomended the needle jet change? I know mine are still stock, but i don't have this low end bog you guys speak of (knock on wood). It does seem like these sleds are jetted a bit rich down low. I still haven't got off my ass to install my boost bottle yet, i think that will help clean up some of the low end fatness on the sled.

 

[Disco]

[galleryattach=4709][galleryattach=4708][galleryattach=4594][galleryattach=4595][galleryattach=4596]Heres my red rocket
what do ya think old track ,new track?

 

[X-Treme3x]

Originally posted by CanadianXCR
[br]who recomended the needle jet change? I know mine are still stock, but i don't have this low end bog you guys speak of (knock on wood). It does seem like these sleds are jetted a bit rich down low. I still haven't got off my ass to install my boost bottle yet, i think that will help clean up some of the low end fatness on the sled.

Its not to clean up low end bog...if you notice when you punch the sled from a dead stop, once it hits the high rpm there may be an almost hesitation out of it. I know it might not seem like it does it but if you were to change them you would see what I mean. The needle jets were recomened by a individual who raced for Polaris back in the day with the particular sled. I have also taken addition information from him for my sled and let me tell you..I thought it was quick since I had it... Its like a whole new machine this year

 

[CanadianXCR]

hmmm...i see what you are saying, i don't think i really have smashed the fun flipper from a dead stop before, but i have gotten into it pretty quick and it seems pretty good...problem is i haven't had a chance to get good test riding in this year yet...Now that we have snow i will try that out tomorrow... I hope to install that damn boost bottle soon too so i can see if that makes the throttle any more crisp than it already is..

 

[CanadianXCR]

also i forgot to mention does anyone know the meaning of the numbers for needle jets?? i was told years ago but i forget now..Also XCR4403X can you use the stock needle with the different needle jet?

 

[xcr440]

yes you can use the stock needle with a different jet.

 

[X-Treme3x]

When I say dead stop I mean sit at just under your engagement 5500rpm??? and smash that sucker..when the rpm jumps listen and pay careful attention to how the sled reacts/responds and you might know what I mean. The sled will almost seem to heasitate or kinda dragg it seems, but still pull like a mofo. I know on mine once I changed them I could tell the difference..but before to me it just seemed to be the nature of the beast..I mean it still flew but I could tell that they cleared it up.

 

[johnsonxcr]

my 99 xcr 440 gen II runs terrible in temperatures above 20F. it will take forever to hit the powerband and the belt slips a lot. when it cools down just 10 degrees it is a lot better, it will sort of hesitate before it hits the powerband still, but when it does it pulls harder than any 440 i have ever rode. we have cleaned the carbs and exhaust valves and it doesnt seem to help at all. can somebody help me with this?

 

[XCRacer440]

Originally posted by CanadianXCR
[br]haha..what a coincidence, i was just wroking on my brakes tonite as well..no leaks on my end, but i should take a peek at my switch just in case...My problem was that my brake light was staying stuck on, even though the brakes were disengaged...i ended up taking the caliper and pads off and cleaning and lubing the slides for the pads/caliper. I also cleaned and lubed the caliper piston as well. I then spent over an hour flushing and bleeding the brake system, i accidentally got a bit of air in the bugger so it took me forever, thought i would never get that damn air out...Finally got it worked out, started the sled and the light was staying stuck again...Cracked the bleeder to let a bit of fluid out and played with it some more and so for it hasn't come back on, so i am crossing my fingers it is fixed...didn't feel like driving around with the brake light stuck on and confusing the hell out of other riders...BTW its a Magura brake system...

It is most likely your relay switch, my break light also used to get stuck on but its fixed because of that little part.

 

[XCRacer440]

Originally posted by xcr440
[br]What are you running for spring and weights. Could be too heavy of weights.

Let's start out simple with his problems, no jumping to conclusions. How long has it been since you cleaned your VES?

 

[XCRacer440]

Originally posted by XCR4403X
[br]Make sure you use either Champ BR9ES or Ngk R2NC plugs.

No, no no use RN57Ycc Champions. That was the plug that was designed to run in that particular race engine.