I recently took my 2002 can am ds650 into the shop because it didnt start and backfired 247. i only had 60 psi compression so i knew it needed to be rebuilt. so i gave 700$ for a tear down only for them to tell me it would be another 4700$ for new piston rings, head/jug, crankshaft and bearing, bushing and seals. i am not familiar with rotary engine but i was wondering where to get a used or rebuilt motor or cheap parts and someone with the know how to rebuild it that wont cost 4500$. someone please help or shed some light on my situation. thanks, Jeff

 

man Jeff im in the same boat i just checked my compression and it was about 70psi. so we tore it all down and tomorrow I'm going to take it to an engine shop and have my rings checked. I'm really hoping thats all it is. Rings are about 50 bucks. If i were you i would get it back and have an engine shop look at it and tell you whats wrong with it. could be rings are bad or even a valve is sticking. Ill let you know what they tell me. look at this site. really good stuff.BOMBARDIER

 

you could buy a good condition DS650 and have it shipped to you for that

hell you could pay someone to put in an R1 or a GSXR1000 for that money

 

It a Rotax not a Rotery Engine. Pack up the parts and send them to Eric @ OMW. He is the man when it comes to anything DS650. $4700.00 sound like a lot of cash. For that price you should be able to do a 730cc motor.

 

Are you guys doing compression test or leak down test? The Rotax motor has a decompression lever.

You could easily do a GSXR/Busa/R1 conversion for way less than you have been quoted.
Good luck

 

Agreed

 

Have several complete engines need to sell,Just became a parapaligic thanks to Kaiser!! Call Gary T. L/M 503-320-9688

 

how much?

 

Just trying to turn some $$$$ need badly lot of bills.thanks Gary Tiffany

 

If mine had low compression, one of the first things I would check, is the valve timing... It's pretty common for the cam chain tensioner to go bad, and let the timing jump. For slightly over $4700, you could buy my DS1000.