Re: Compression adapter

[amuller]

Brillman has adaptors. https://brillman.com/product/spark-plug … 8-to-14mm/

Not sure if Champion still carries them.

7/8" plugs are readily available and cheaper than adapters. The last small equipment to use them, that I know of, was the Gravely Convertible 2-wheel tractor, up into the 60s. An old-timey Gravely dealer will know about this stuff.