"Richard Lamb" wrote in message ...


"Phil Sisson, Litchfield Aerobatic Club" wrote:

For what its worth, the lycoming 0-290-G only had one mag.


That's all it needed for ground power duty...
The O-290 AIRCRAFT engine has two.

RIght, but it has no problems with detonation, cylinder glazing,
or other compression-reducing syndromes. The plug isn't even
moved to where you would put a single plug if you'd designed
that engine for only one plug. They just took the 2-plug O-290
cyls and blocked off one side.