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 FeedsAlexis DeJoria's move to John Force Racing has worked out pretty good so far. We talked with DeJoria about her favorite drag racing moments.
Travis Harvey scored a big win at the IHRA Pro Mod Mania event. Harvey brought home a cool $125,000 payday for his efforts at Milan.
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Dallas Glenn pulled off a dominating Pro Stock victory at the New England Nationals. This was Glenn's first win at New England Dragway.
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You're always going to find cool cars at any drag-and-drive event. Check out these unique vehicles we discovered at Turn & Burn.
Leah Pruett and Matt Hagan are looking for more success at Epping. Here's a preview of the TSR team's plans for the New England Nationals.
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Muncie Dragway Owners Announce Historic Indiana Facility Is For Sale
The owners of Muncie Dragway announced this week that the historic racetrack has officially been put up for sale.
NewsSource Today, 06:20 AMMore...