2010s' have all the new stuff that the update kits do plus the new style cylinders......or so the dealer says...
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Sorry Stew polaris dont cover the Yakima models![]()
2010s' have all the new stuff that the update kits do plus the new style cylinders......or so the dealer says...
There is no new cylinder in the recall. It only gets replaced if it is damaged.
Actually..the 2010's do have a new cylinder...the 08's and 09's dont get ....the cylinder for the 10's is identical to the older cylinders but it has a longer thicker skirt section to better support the piston..this cylinder will not fit the older engines unless you change the upper half of the case......
Just curious Monte, why not go with the updated engine, extended warranty and then look at mods? Most AM pistons are billet, the cast factory type are almost always better. Billet need more clearance since they expand unevenly where the material is denser around the crown and in the center pin area. At Mn compression should be great with a stock motor, it's at altitude where we lose 3% per 1m feet that they may need a bump in compression.
As for mapping that remains to be seen but you can bet they will be rich on top end. If that's the case an AM exhaust, i.e. SLP single will lean you down, maybe just right for the stock fuel map. At least that's the way it worked with the 08/09 map, it was low RPM mapping that was lean.
Anyway, just curious about your logic, obviously you gave this some consideration.
Hey Ron,
Yeah, I've been back and forth on this for some time. Talked with quite a few people on what to do. And yes I would prefer a cast piston too. My sled never experienced any motor related issues. Always ran great. So for me to get the pistons I would have to sacrifice a map that I know works and a higher compression head. I did tear it down before last year just to look for any scoring. The piston to cylinder clearance that Polaris is using just doesn't make sense or sit well with me. The piston wear was obvious from where it was trying to tip in the cylinder. In 700 miles, pistons shouldn't look like that. You won't find such poor tolerances from Honda, Yamaha, Suzuki etc..Just my thoughts on it, I'm not a professional engine builder.
The new twin ring should dissapate heat better and keep the piston from tipping. Still seems like a lot of clearance. I spoke directly with Wiseco. Their forged pistons that we consider to expand quite a bit are still running a tighter tollerance than Polaris and they are a twin ring. They convinced me they have minimal expansion and will be a long life piston. It's sorta a have your cake and eat it too thing for me.
All my riding is done out west so I prefer to maintain the higher compression that the original head has. Plus if anything goes wrong I can blame myself and not worry about what Polaris is or isn't going to do.
Good to see you back on here Ron.
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I just purchased a holdover '09 and am having the update done before I pick it up this Friday... I can't wait!
I thought it said in the recall letter that the cylinders would be changed to a new dual ring. Isnt this correct?There is no new cylinder in the recall. It only gets replaced if it is damaged.
I thought it said in the recall letter that the cylinders would be changed to a new dual ring. Isnt this correct?
I thought it said in the recall letter that the cylinders would be changed to a new dual ring. Isnt this correct?
I thought it said in the recall letter that the cylinders would be changed to a new dual ring. Isnt this correct?