XP Turbo

[Fack]

Hey everyone. I was writing to see if there was any interest in an XP turbo. I know there are others out there currently building kits for these sleds but I feel that there is a lot to be had in the current systems available. As we all have noticed ski doo has fallen behind in the high horsepower class. There's no denying that ski doo leads the industry in stock form, but when it comes to aftermarket turbo systems producing reliable high horsepower there isn't a lot out there. A lot of this stems from the other major manufacturers going to efi systems thus simplifying turbo fueling requirements. I feel that just as ski doo can still make a carbed sled compete to the top of its class, a carberated turbo can be made to compete with efi in reliability and performance. I know there are skeptics that believe this is not possible, but it can be done and there are sleds out there with carb systems that work. Many of us have seen a carbed turbo polaris 600 beating up the mountain consistantly without problems. I would like to try and bring that to the XP 800. I would like to use a 66 series aerocharger now that they are being made available again. I have used an automotive turbo with great result but I feel with the "new" 66 series turbo a cleaner faster responding turbo kit that has the potential to produce reliable high horsepower can be achieved. Anyway...just wanted to hear your thoughts or ideas.

-Fack

 

[groominator]

800r

I have a lot of interest in going turbo on my 07 XRS 800r. I'm open to all information and prices.


XRS 159 with Challenger 2, BJ clutch kit, shaved head, MMP 9 inch rear two wheel axel, Timber sled intake, Timber Sled Mtn Tamer suspension with air shocks. vent panels (mid & lower) HPS can, Boss Seat ect.

 

[pinnedunderdoo#3]

the xp turbo would be awesome to ride but my only concern is the cost to make the kit and sell it.... talking to a guy with a xrs turbo last ride he payed 7g canadian for his and that wasnt even instalation i just feel that if your going to make a turbo it has to be with in reason cost wise cause for a turbo xrs with no intercooler and nothing really fancy on that kit (i forget the name) i dont thinks its worth forking over 7 g to have a turbo sled when theres always a bigger better one around the corner... but hey if you can make one for 3500-4000 tops i think you would have really good sales.

 

[mandingo]

would be intrested if the price was right , love the xp , but sometimes its just not enough . would like to buy a turbo someting for a second sled but not wanting to spend 20 plus grand .

if there was something reliable out there for a carberated sled , could be a lot of fun

 

[Fack]

I havent worked out a price on the kit yet due to the fact that I haven't built one yet. It would be more in the range of $5,500. This is a lot of money for a kit I agree, but you can't do a kit for much less. The 66 series turbo is $3,000 just for the turbo. There are cheaper turbos out there but then you have to build an oil resevoir, run an oil pump to oil the turbo, and plumb it in to the coolant system. They work it's just a lot of extra stuff. Also with the aerocharger you have the variable vein which allows you to utilize minimal amount of exhaust flow on the bottom to spool the turbo and when the veins open you are still efficient on the top end. It's really a neat system and works really well on 2-stroke motors. Also, with the ski doo there are quite a few modificaitons that have to be made to the carbs. You are no longer using the dpm so a new way to give you some adjustability on the bottom end has been come up with. The key to making these turbos respond well is really crisp bottom end and when you disconnect the dpm (which you have to do) you lose that. You could get it to work good at one elevation or one temperature but that's not where I ride and I assume no one else rides there either. This is for a mountain sled and you need to be able to make quick adjustments to the bottom end to compensate for elevation changes. I'm not reffering to adjusting the power jets but a new adjustment has to be added to the system that can give you a quick easy way to adjust the pilot circuit to maximize bottom end response. Also, other things have to be done to prevent "flame outs" and bogging when the sled goes air born. There is a ton of stuff you have to do to make these things a consistant day after day runner, and unfortunately it's not cheap. As for the XRS I have a kit that I built on a 2006 ski doo that works awesome and it would be easy enough to build one on an XRS. The fueling requirements are different for the "R" motor but it wouldn't be anything more than changing some settings in the carbs. I'm still up in the air about doing this but I think it would be fun and it would put ski doo up there with all the other turbo sleds. Keep the info coming.

-Fack

 

[groominator]

Fact

Keep me posted. BY mid summer I would love to here back from you.

groom@conceptcable.com

 

[eagle]

I am interested in a kit for the xp let me know what you come up with.

 

[sloppy2nds]

you said "reliable" and "high horsepower" in the same sentence. not trying to $hit in anybodies cereal here but i dont see how that is possible. id love to turbo my sdi 1000 but if i do that i might as well be riding an arctic cat. itd be a total liability then. its bad enough that every time i start it, its one pull closer to blowing without a turbo.

 

[Fack]

Haha! There is no doubt that reliability goes down with any real high horsepower modificaitons. When done right turbo's put relatively low strain on a motor. Having the correct claibrations is the key to making turbos last. When set up properly you should be able to get 2000 miles out of a set of pistons at reasonable boost. Of coarse when you start cranking the boost you are going to shorten the life of engine parts. Reliability is always an issue with any sled and when you understand a system and what potential problems to look for you shouldn't have any problems. If turbos didn't work and weren't reliable there wouldn't be so many of them in the mountains. It is the only way you are going to make big horsepower at higher elevations. You can take a good running big bore or a well tuned stock power plant and run them up to 7000 ft and above and there is no comparison. Anyone who tells you otherwise is feeling guilty about spending their money on other mods. I'm still not sure about buiding a kit for these sleds. I would just like to know if it would be something that people are interested in. Keep it coming...

-Fack

 

[cableguy]

if you can get 1500 miles before new pistons on a 2 stroke turbo i'd be interested.
under $5000 complete kit? sign me up G

 

[Unklsnomobile]

There 's only 10000 XP's out there. Chances are a few guys might be interested. Keep us posted

 

[WatchThis!!!]

There 's only 10000 XP's out there. Chances are a few guys might be interested. Keep us posted

Waaaaaaay more.

 

[turboless terry]

just rode my buddies xp turbo yesterday. Still have a few things to get dialed. You are looking at more like 8 grand with the kit and clutching, vent kit and everything else needed to make it run. Seems like it is going to be awesome. The only drawback is it isn't as hassle free as is my turbo nytro.

 

[pinnedunderdoo#3]

just rode my buddies xp turbo yesterday. Still have a few things to get dialed. You are looking at more like 8 grand with the kit and clutching, vent kit and everything else needed to make it run. Seems like it is going to be awesome. The only drawback is it isn't as hassle free as is my turbo nytro.

ok lets say he sells his kit for 5500 drill 3/4 inch holes in panels throw in some screen material $20 dollars clutching can't be more then 300 bucks canadian tops and whatever else lets say 500 on the high side so your looking at $6320 far as i have seen thats pretty well is where any yamaha kit starts...

 

[rjm350]

I am planing on having a turbo on my XP by next ridding season. I would be very intrested in this kit.
As mentioned above, getting the pilot circuit dialed in can be the problem. If this can be over come this kit would be awsome. With that Aerocharge the kit would have very little lag time, and be great.
What boost pressures are you thinking this kit would run at?
Also would you be looking at putting an intercoller on this kit?

 

[NoSecondChances]

Turbo boyz is already making a kit with the 66 for the XP.

As said, I would shy away from "reliable", "turbo 2-stroke" and "high hp" in the same sentence, but not bashing, reliable is a term that people often throw around too readily. Cars are reliable, sleds are not, even stock ones. when your sled can go more than 25,000 miles without touching anything, then you could call it reliable.

The market is there for the turbo's, and if the kit is well put together and works well out of the box, people will be willing to shell out a few more clams for it. If it's junk, then no one is going to buy it, even at bargain basement prices. Yeah its cheap, but if you're sled don't run, what's the point right?

Build a quality kit for a good price, people will buy it. I thought that your price of $5,500 was cheap, I know kits in Canada that go for more than that without install with an aerocharger 53.

 

[turboless terry]

His kit was almost as expensive as my nytro and we did the install. I had my dealer install the nytro. His is a boostworks kit. The kit looks awesome. They come with an intercooler. Turbo boyz don't have one. All nkow is that about every turbo, anymore, is intercooled so it has to make a difference. Boostworks says a big difference. Turbo Boyz says not enough to justify the weight.
The kits seem overly expensive but what do you do if you want that power. There are some things that should have come with the kit,such as, 07 needles and pilot jets. Nobody had them. They were special order.
The instructions could be alittle better but there customer service has been awesome.
I hope it works good for him because i love the rev. I love my mcx nytro but its not an all around sled. Those who say the are the best boondockers are full of it or don't know what boondocking is because the nytro is heavy in the technical stuff. You can take a bunch of weight off them but you can't get it off the front end where they need it. I bet the xp is a 100 pounds lighter. I actually like the old revs better because I have an 07 & 06. Just not used to the xp.

 

[turboless terry]

I am planing on having a turbo on my XP by next ridding season. I would be very intrested in this kit.
As mentioned above, getting the pilot circuit dialed in can be the problem. If this can be over come this kit would be awsome. With that Aerocharge the kit would have very little lag time, and be great.
What boost pressures are you thinking this kit would run at?
Also would you be looking at putting an intercoller on this kit?

Boostworks kit is 9 lbs. Anymore and you are over working the turbo. It is a 53 series and they are only good for 215 horse but if that is fairly reliable in that light of asled it is going to be fun. Not going to win all the hillclimbs. Just a fun all around sled.

 

[Fack]

Thanks for all the input good and bad. I wouldn't build one with an intercooler and here's why. Keeping a 1:1 ration between the intake and exhaust side is critical on a 2-stroke which means you want the intake pressure and exhaust pressure to increase equally as the boost goes up. When you add an intercooler to a system you undoubtably get a pressure drop across the intercooler which throws our ratio off. This is not a big deal on a 4-stroke motor because there is no scavaging affect taking place in the exhaust. It may not be that big of a deal with an intercooler that flows well but it does affect the efficiency of the system. Also, most intercoolers you see use air to cool the charge air inside. This works well if you can get alot of air flowing across the intercooler. I don't see how this can be successfully accomplished when your intercooler is right above your hot motor and your cruising around the in the deep snow at relatively low speed. In just a short matter of time you heat soak the intercooler and you have gained nothing but the weight of the intercooler. I would think that you a better off drawing cold air from outside the hood in the first place and not worrying about trying to cool it. There are kits out there that draw hot air from under the hood and then try to cool it with an intercooler. Doesn't make sense to me but maybe it does to someone else? Intercoolers work on drag sleds that run with out a hood and are getting a ton of air across them, but we don't see that much in the mountains. I figure cold air intake and leave it. If you could figure out a way that ran the charge through an intercooler under the tunnel that would work awesome and does on some really fast sleds, but I don't see it being done on an XP or a rev.I know there are other guys already building kits for these sleds, but like I stated earlier, I feel that there is more to be had as far as making these things consistant and more reliable. Keep it coming! All this info is great!

-Fack

 

[rjm350]

Very intresting about keeping the intake/exhaust pressure raio 1:1. How do the drag sleds deal with pressure ratio when the run intercoolers?
I like the idea of a cold air inake!!
What boost pressures can be ran with the 66 series turbo?