spark plugs 1916-1920

Unknown

Hello All,



1. Can any one tell me the brand and type of plug that was originally

installed from the factory on the early super six engines?



2. What are some of the more common interchange plugs by other

manufacturers?



3. Is there a modern plug out there that works with these engines? Is

is better to stick with the originals?



4. My car came with rusty old AC 78 plugs that look to be about 7/8

Inches in diameter and pretty stubby and don't look take apart but

may be so. Mike M. in Arizona tells me that Champion C-4's work well.



Thanks in advance for the help. Also looking for an original hand

crank for the engine if there are any spares out there. Any

suggestions for a substitute?



Thanks in advance for the help,



Chip in Seattle, WA USA