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jtap00 03-21-2010 11:20 PM

New engine
Has anyone tried to put any other engines in there Revolts. If you have I would like to know if you ran into any problems that you did not see coming. I have started putting a Polaris 800 RMK snowmobile engine in. The engine fits in the Revolt really nice and looks like it will work well. The biggest problem so far is the exspansion chamber and muffler, making it fit is a challange. When I get it running it puts out 140-hp and thats stock.

offroadpro4 03-22-2010 12:47 AM

Re: New engine
It would be cool to see some pics, and some vids..
keep us posted...

Red Rock Powersports 03-22-2010 12:55 AM

Re: New engine

It is good to see you surface. I haven't heard from you for a while. Aren't you going on the ride with Team Oregon in a week or two? Sounds like quite a project. Are you going to be able to have it ready to roll? Knowing you, I probably should have asked that last question :o. :D:D


jtap00 03-22-2010 12:16 PM

Re: New engine

four_by_nut 03-22-2010 12:47 PM

Re: New engine
MMmmmmmm...........tasty! That looks AWESOME!!! 140hp from an 800???? Sounds like a really SLICK upgrade for those that want to race something like that. I'm assuming that is two stroke though, right? Which, per racing rules, it too large. Has to be 400cc or less to be two stroke in most off road desert racing circuits like BITD etc.

Looks like you are going to need a serious heat shield to keep the exhaust from cooking the back of the seat!!

And you should go ahead and order a replacement transmission now! Your going to need it!!!!! :p Or look to replace it with a beefier version. I think Ron (RRAWTRY on the forum) replaced his recently???

acusports 03-24-2010 06:49 AM

Re: New engine
Nice job!!

800 twin 2 stroke 140hp sled motor!! That thing is going to be insane. There is a guy on youtube that did the same conversion in a Honda Pilot, watch the video you will be horrified. The stock tranny holds up just fine (its a Honda)

I would not worry about heat that much as 2 strokes run way cooler than 4 strokes, a simple heat shield or header wrap will do wonders. The only thing I see that concerns me is the length of that Y pipe is pretty long for a 2 stroke. That motor may run differently than it did in the sled. Have you thought of modifying the factory Polaris expansion chamber to help make that 90 degree turn?? I know its easier said than done. You did a really nice job!!

Please keep us posted on this one

jtap00 03-24-2010 09:53 AM

Re: New engine
That is the stock Y-pipe that I cut apart and made longer so I could get from behind the seat. The exspansion chamber I have also cut apart and took the volume from the longer header pipe and removed it from the exspansion chamber. Im sure you are right about it will not run the same as the sled. If the pipe does not work right I will find someone that knows about them and have one made that does work, but I have to try.:)

lutrev 03-24-2010 10:17 PM

Re: New engine
How did the motor mounts line up? Also with your homebuilt pipe, if you "only" get 120-130 hp and can keep the pipe within the cage you will be doing great. Very nice work. Do you have a starter on this motor as well?

jtap00 03-25-2010 10:09 AM

Re: New engine
The motor mounts I took off the Weber engine and took very little mods so the mounts in to buggy it self were not touched. The mount took less then two hours to make.
The pipe will be in the cage and should have it done today.
The engine I have in the car now come with a starter but the model of sled I had did not come with a starter. I plan on adding a starter. I have to get the starter ring on the clutch and mount the starter on the engine. You can buy the kit to do this on e-bay.

lutrev 03-25-2010 07:10 PM

Re: New engine
Thank you, cant wait to see a video of it running, good choice for a motor, tons of 800rmks out there, and lots of hop up parts if needed.

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