Has anyone heard of any preformance upgrades available for the 084 engines? I heard the
aircraft experimernters have come up with a theory that it should be no problem to get 1 hp per cu. inch. Seems they say it is a must to beef up the headbolts with Helicoils to spread out the stress. They tend to pull headbolts out of the case and throw cylinders otherwise. That's just a start. It would be interesting to check out any other mods available!

Dave