What do you guys think about pilots and sled engines? Say money wasn't an issue? Remember the pilot transmission will stay so it would have to run through that?

Like this one?

http://pilotodyssey.com/new440.htm

Yeah, maybe with efi, loose all that jetting crap?

Yeah, maybe with efi, loose all that jetting crap? How does it perform?

Performs good but still needs some tuning done.

EFI is not required IMO its just something else that can fail or go wrong, carbs are rock solid and very reliable, once you establish your jetting you don't need to mess with it much, I set and forget mine if its running lean on a cold day I block off one of my intake tubes with a piece of duct tape to fatten it up I don't change jets...

http://pilotodyssey.com/intake-mod.htm

Been told that a rotax 583 is a good one to go with, produces about 95hp from a stock motor (( Internal Combustion Engine ? )) so no need to mod? Do they make any high hp 4-strokes that could do the job, surley realiability on a 4-stroke would be better and it would give higher tourqe outputs?

583 is a great Engine and would make all the power you need in stock form.

I have been looking for a good 4 stoke myself I hope that one of the 4 stoke sled engines would work they are still too new to be easily found at a good price my 440 will have to hold me over a few more years..

would the pilot transmission hold up to the power of a 583? I know you said they are new but do you know of a decent 4-stroke Engine to suit the pilot?

The trans will hold the power but you need to keep a eye on the clutch pack inside the trans, they can slip and burn up.
http://pilotodyssey.com/PO/viewtopic.php?t=64

They are a easy and cheap fix if you don't burn it up, mine in stock form seems to hold up well if I ran into a slipping problem I would probably put shims under the springs to increase the tension.

I havent even really looked for a 4 stroke sled Engine once they become plentiful in the sled salvage yards I will look for one, search around maybe they are plentiful now I havent been looking since my 440 is running good and I have too many other projects going.

Any one know much about this Engine on ebay? Is it any good?Item number: 4624856607

All I know is its a case reed Engine you will have to mount it high in the chassis for the carbs to clear the transmission.

Been looking on the Rotax website,

http://www.rotax.com/en/Engine/2004/Sno ... Models.htm

what do you think of the 4-stroke v-twin going in a pilot?

You give any more thought to this project?

After speaking to a rotax Engine supplier, ive come to the conclusion that buying the Engine on its own isn't the best thing to do, so it looks like i'll have to buy a complete sled. Ive been a bit busy at work for the last couple of months but its all calmed down now, so the search is on for a powerfull 4-stroke sled, i have all of the rebuild parts now apart from the Engine.
Any suggestions on a 4 banger sled?

Sounds cool, they have sleds in your neck of the world?

I would join as many sled boards as you can and ask what is the hot ticket in the 4 stroke sled engines, ask owners for over all measurments if you can get someone to do it..

Keep us updated on what you find out I am also looking for a 4 stroke sled but not seeking one out at them moment..

I would look at the Yamaha's 4 strokes
I think the 3 and 4 cylinder are a bit large to fit in a pilot frame, plus with the PTO gear reduction they would build lots of torque which would be hard on the Pilot's tranny clutch pack.
The best 4-stroke I've seen for a pilot would be the Phazer power plant. It is two CRF250 cylinders grafted together. It makes about 80 H.P., problem is it is a brand new model, costing 7200.00 for the sled, and just for a Engine, a bit much.
Any ways look at Yamaha.com there you can see the Engine.
There is lots of ATV 4-strokes out there, but limited on power for all the work involved IMO.
Wayne

Here is a cheaper model
Phazer Genesis 80 FI, four-stroke powered. The lightest liquid-cooled, YZ-inspired Rough Trail sled. MSRP $6,399*
http://www.yamaha-motor.com/sport/produ ... /home.aspx


80 hp would be all I need.

Need to find out what the RPM is

Although I am sure they weren't intending to do so, it appears that maybe the EPA and other greenies are doing us a favor by forcing the four strokes on the sled makers.

One interesting thing I have noticed about several of them is the ability to have the exhaust out the back, could be good to not have all that heat building up in front of the Engine and behind the seat.

It says peak power reached at 11,000rpm.
Pre-owned sleds in the UK are like rocking horse shit so finding one could be a problem. It looks a good Engine just need to find out its dimensions.
80hp would do me to.

11k RPM would push a Pilot up to about 90 mph with current gearing heh

I will have to look a little closer at these maybe get lucky and find a wrecked one.

You have any luck on the sled msg boards?

check this one out, just under 800cc on a four stroke sled...this might be a good buy??

http://cgi.ebay.com/ebaymotors/2004-POL ... dZViewItem

Good find Drakman I will try to stop by the Polaris dealer on the way home form work tomorrow to see if that Engine is any good.

http://www.go-polaris.com/talty/

that's Brain the owner on the Polaris racing brochure upper right hand corner.


I sent him a email see if he answers.

On the Yamahas the 4 stokes turn high RPM's but they gear the PTO to 8000 rpm because that is the most efficent RPM for the clutches. This gearing down makes these motors have great torque numbers.