What is involved to use shielded sparkplugs and wires?
The BC12-D uses unshielded plugs and wires. To improve radio reception it is desirable to replace these with shielded wires and plugs. Modern shielded plugs and wires are significantly taller than the original, and for the top plugs require a bump outs rework to the original engine cowling. One idea is to use shielded plugs and wires only on the bottom set, and switch the magneto to this set during radio conversations. Another suggested alternative is to use Ercoupe Cups available form Fresno Airparts (559-237-4863) You have to turn the threads down to fit the standard shielded plug harness end.
