We were just going through our Polaris 800 twin engines and discovered the power valves were damaged on one. Have you seen this, and is this very common?
Derrick R. â€“ Idaho
Yes, the 800s are known to experience more damage to the power valves as there is not as much coolant in this area as is found on the 700 cylinders.
In response to the extra heat that can exceed the threshold of the aluminum material used to make the valves, Polaris now offers stainless steel valve kits and you can also install titanium ones for even more protection. These materials have even higher melting temperatures, making them better suited to withstand the grueling conditions you mountain guys place your sleds under when doing long, sustained wide-open pulls up a long climb.