If you guys haven't read this guy's stuff, you're missing out on great engine info. Blogger Mike Busch writes piston engines should be overhauled only when needed...
...Designed as a retrofit kit for Rotax 912 or 914 aircooled engines, the HPS incorporates a new g...festo.
Designed as a retrofit kit for Rotax 912 or 914 aircooled aero engines, ........