I believe a turbo will let it live longer. Cooler intake temps, less consistent full throttle load, case pressure supports the piston, auxiliary injectors help cool the piston and allow a solvent to move lubricant.You guys are starting to scare me My sled turns 8700 with the BD high boost kit with 1600 miles on it.
Yes. The locating pin migrates in, the ring spins on the piston and catches the exhaust port.
I have had this issue on 800’s and 850’s.
All from 300-800 miles per engine.
The last 850 engine made it just under 1100 miles, but failed a leak down test around 750 miles. We kept dropping fly weights until it went down. Polaris moved from a historic 5% leak rebuild to 10%. I think the bean counters made this decision to get past warranty claims before they pass it on to the insurance company.
You can tell when a ring starts it’s migration, you will get a audible pop and the engine shuts down. It will start up, but the inevitable has started.
I don’t. Sorry to say.I had the same piston failure, ring cought port, cost me 1200$ chopper bill. Warranty covered a new motor.
Tony, do u think they fixed this ring / pin issue?
Depends on the rider, Ive got one guy that will do it in under 1000 miles on every piston except a Suzuki.I don’t. Sorry to say.
It started in my 800’s and the 850 has the same issue. Let’s see what the Boost piston has to offer.
Doo had the same issue when the etec came out. A Doo engineer was flown here to see where the piston failure occurred. Jim had the first one to go down. They had multiple design pistons in the first year of production. I believe they got that fixed.
The piston locators coming out has a lot to do with the rider..... The cylinder finish on a Polaris is still a little to aggressive.Depends on the rider, Ive got one guy that will do it in under 1000 miles on every piston except a Suzuki.
Rev 800s were every 5-700.
The best fix so far is three sleds and keep them all under warranty.
His Doo turbo hasnt gone down yet so well see on that one.
I think we were led to believe the Stop Sale was on 850 Axys sleds and not the Matryx. Then the conclusion of the Axys having the engine issue would be disrupted if the Matryx had faulty engines.