Valve Adjuster Threads

[karmarepair]

Most sources say 8mm X 1. Not so the CB Performance Elephant Foot adjusters on the early AeroVee 2.1 kits, circa early 2000s, They are 3/8" x 24. Of course if you don't drop the nuts and they roll away to who knows where, you won't care. And the wrench you'll need in valve adjustments is a 1/2".

Later kits use different heads and rockers and adjusters, so YMMV.