Well I came up with the The number of turns head thread Test.
Basically there is a seat in the head for the wider portion of the plugs just above the threads to stop on. This seat, notch, ledge, whatever... read more

Mustang FeedsChad Green is having the best year of his nitro career. Green's goal is to use his momentum to pick up a Northwest Nationals win.
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Pacific Raceways has produced big moments for Ron Capps and Maddi Gordon. The teammates are ready for a big weekend in Seattle.
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Cody Chatfield has put in the work to drive the Booze Brothers Vega Funny Car. Chatfield and his family help to keep this Vega running.
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There's plenty on the line this weekend at the NHRA Northwest Nationals. Team Kalitta is ready to continue its push towards series titles.
Check out this amazing Fox body Mustang. This Ford is a great looking car and the amount of go it has matches its level of show.
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Elite Motorsports has a head of steam heading to the Northwest Nationals. The Elite drivers want to continue their success in Seattle.
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