Originally Posted by rv9builder
Jim, What happened at 47 hours? It wasn't covered under warranty?
Piston Meltdown. Detonation is not covered under the warranty. Seems Rotax has seen enough of this to exempt it from coverage.
Rotax immediately concluded bad gas (without any evidence). Once that was ruled out they turned to the cooling shroud that Vans has now eliminated from the firewall forward kit.
I plan on giving it a proper write-up but it's not a priority for me. I won't own a third Rotax engine.