spark plugs

[Dave Prizio]

Auto spark plugs are used with electronic ignitions such as Lightspeed because they can tolerate larger gaps that go together with the higher voltage that these systems produce. Both spark plugs and caps can be found that have solid ends or threaded ends. Just be sure to match the caps and the plugs.

The auto plugs work well and they are MUCH cheaper than aviation plugs.

[PaulMillner]

Auto spark plugs are used with electronic ignitions such as Lightspeed because they can tolerate larger gaps that go together with the higher voltage that these systems produce. Both spark plugs and caps can be found that have solid ends or threaded ends. Just be sure to match the caps and the plugs.

The auto plugs work well and they are MUCH cheaper than aviation plugs.

Also note that Electroair has certified fine wire and massive electrode plugs with a large gap, 035 IIRC. SO, lots of alternatives! :-)

Paul

[Aaron Novak]

I guess my only concern would be quality control of automotive type spark plugs. There are bad ones that get through and fail in short order, you probably would not get one...but you never know. One of the reasons aviation plugs are designed the way they are, is for mechanical durability both from engine vibration and abnormal combustion. Automotive plugs are much less durable in this area. All plug manufacturers are not equal either. NGK is the leader in ceramics. Good Luck!