My diagosis from afar is ignition noise. No two ways about it. You MIGHT
be able to get away with resistor wire or resistor plugs, but talk to your
local EAA tech counselor about shielded ignition, shielded this, shielded
that.

An automotive engine is one of the best broadband noise sources known to
man.

Jim




This is a KR2S with a Corvair 2700cc/164cid engine converted per
William Wynne Manual and uses a distributor/coil and a JD Dynamo w/
regulator.