The one year warranty add-0n was a joke, too. The letter said it ends June, 2010. If you had a 2009 with a two year warranty, the "free" warranty was actually inside the time frame of your two year warranty. They gave us nothing.
I have bought two top ends in less than 440 miles during my ownership and in some 900 miles of the sled's life. The sled is on its second MFD, chassis relay, stator, and maybe 3rd voltage regulator. I just installed Wiseco pistons in a replated cylinder. I was sorry that an aftermarket gasket set was not available--Polaris did not deserve my hundred something dollars for the few o-rings,etc.
Its not all pistons-- the second factory new cylinder bore is large enough that a full diameter piston (85 mm or 3.34 inches, would have been close to factory clearance. It measured 3.347 inches, or 85.01 mm.
The pistons were different-- one was 3.320 in (84.328) and the other 3.338
(84.7852). The clearances were .027 (.6858) and .009 (.2286) -- neither within spec.
It was fun-- I could get a .035 in/.88 mm feeler guage between the skirt and the cylinder with the piston at top of bore. The little piston practically drops in without trying to compress the rings-- gravity will do it.
Like so many others, I am really mad.
On the bold I dont even know what to say about that. I guess when your order pistons you better order about 12 to make sure you can get two that are even close. Great job there Polaris....
I dont think mad would cover what I would be had that been my engine.
.027 clearance is a flat joke. Hell .009 and their spec of .006 is a joke too. The company I work for would throw throw that crap in the garbage.
That doesnt sound like much but its really alot when your talking about something thats trying to work that hard. These engines should be built with
specs so tight that you dont even need gaskets in the engine. Poor quality leads to one thing... CHEAP CHEAP parts...
I was told by someone that works for Polaris that the update had smaller pistons because they saw to many failures from pistons sticking in the bores so instead of actually fixing the issue they created a band aid remedy to shut people up and just made smaller pistons... You wouldn't even have to graduated high school to provide that marvel of engineering.
I had considered buying a PRO because the chassis is crazy good, but you couldn't give me one of those powerless engine's and after reading and seeing with my own eyes pistons that had .009 and .012 clearance its insane that they even last as long as they do.
You look at the engine that's in the pro 143 hp... You can get that out of a 660... with pipes and porting pretty easy. It also makes more torque. Might as well buy a 600 and put a 660 or 685 kit on it at least that will run.
Makes me mad when these guys think that they have the only mechanics that work on stuff. Half those guys couldn't take one apart without the manual that tells them how. Becaus if they were good mechanics they wouldn't have put these motors together with the bad specs. They would have told polaris that was never gonna work.
