polar gap plugs

[Jim Steck]

>Surface gap plugs are the coldest plugs you can get.  On the rating
>engines at Autolite they can't even be made to pre-ignite.   They
>would also foul out pretty quickly after a few cold starts in
>a street motor.

Not necessarily . . . they were original equipment in Alfa Romeo 4 cylinders
when the cars were still imported.  Maybe the Autolite plugs were colder than
the Lodge used in the Alfa.

-Jim Steck