whats up everybody. just thought id say hi. ive been snowmobiling for 6 years now and started when my dad bought a indy 5. im pretty much addicted to sledding and went to hay days this year. theres lots and lots of good deals there and im planning to upgrade to a 03 rmk 800 next year when i go back. If you have that sled tell me how you like it. Thanks!!!
If it's the 03 Vertical Escape, it's the lightest 800 RMK that Polaris produced. Nice sled
The 800 engine is a bit of a problem, especially in the long track sleds. A weak case design can cause premature failure of the PTO end of the crankshaft. Tearing the engine apart and doing a wide-bearing upgrade helps that problem. Keeping the primary clutch balanced also seems to help a lot. I had engine plates and torque stops/push stops on both of mine to keep the engine planted, and never had a problem. If the case isn't perfect, the wide bearing may give you a bit more time before the engine breaks. That engine is really happy with perfect cases...
Take a look at the VES guillotine valves, as well. If they are aluminum, consider replacing them with the Stainless Steel valves. There is no cooling around the valve assembly and with hard running, the engine can build enough heat that the guillotine can melt the aluminum and parts can fall into the cylinder. SS solves that issue.
Welcome to the forum!
2007 Dragon RMK 700 155", 2008 RMK 600 155", 95 Prowler 550 2-up, Really OLD AC Cheetah
1992 Ski Doo Mach 1 (SC-10/2 suspended) March '07 SF.com Sled of the Month! (Lost in fire 4-7-13)
1992 Ski Doo Mach 1 original 2006 Ski Doo MXZ 500SS
1999 Ski Doo MXZ600 Webmaster Evergreen Valley Snowmobile Club SledNH.com Moderator