What's the best plug to use in a Fronty "T" head?
Model A crank bigger carb and header.
Stock T piston head.
Thanks for any help.
They are 18mm, so get some model A spark plug adapters for 14 mm plugs and you will have a much better heat range to select from. Most of the A parts houses carry them.
oops- meant 7/8" not 18mm. Sorry