I brought this up in the general forum and appreciate the response I received, but I would like to know more about the topic since I am seriously thinking of coming over to SkiDoo. I understand the outer main bearings are a sealed bearing with no lubrication from injector oil. This is used on all Series 3 engines.

Could some one please define what engines are Series 3. Is the 500 SS a series 3?

How are these bearings holding up? Has this been a problem for anyone and if so, at what mileage? It seems there is no info on the life of these sealed bearings before they need to be replaced or repacked. Does SkiDoo give a recommended service/replacement interval for these bearings?

Is this supposed to be a better way of buiding a crank or is it a cost saving measure? It doesn't seem like the greatest idea in the world to me, but I am certainly no expert.

Any info on the subject would be greatly appreciated. Thanks.

I just sold my 05 600sdi x with 9000 miles my buddies has 10100 miles no problems with either one of those DOO's Go for the DOO U won't regret

I believe the sealed bearings use a certain grease from Ski-doo. From what I've heard/read when you start seeing the bearing pushing grease out of the seal, it's time to change them.

All hearsay tho.

not sure the 500 ss is a series 3....but on the series 3 (800ho 600ho) the outer mains are not lubed by injector oil they use a grease that is kind of spendy. Never usually have a problem with the outer or inner mains as far as that goes. I have had many many of these motors apart with thousands and thousands of miles and no issues on those bearings.

I had 10000miles on my SDI with no crank bearing problems. They run in Isoflex grease and seem to be trouble free...

Thanks for the replies. It seems as though these sealed bearings are a good thing. Probably how BRP gets away with using so little injector oil, especially in the new E-tec. They have obviously been working up to the E-tec for several years, introducing new product and designs a little at a time. I guess that is why they have so much confidence in the E-tec and are dropping the SDI. Much of the E-tec engine has already been proven in the SDI.

My hat goes off to BRP for their ingenuity in keeping the 2-stroke alive. Maybe someday we will see one in an automobile!