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 FeedsPro Modified veteran Chip King topped a record-setting barrage at St. Louis, breaking the 5.50 barrier with a stunning 5.596-second run.
It was a wild year for the Funny Car and Nitro CHAOS series. Here's a recap of how the title chases played out and who scored the wins.
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Weather Can?t Stop Swanfest Money In The Bank At Rockingham Dragway. Here's a recap of who scored wins at this no time party.
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The Midwest Nationals marked an important point in the NHRA Countdown. See who picked up wins in St. Louis this weekend.
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Two days after setting a new stick-shift world record at FL2K, Brett LaSala's "Snot rocket" Mustang lost a tear tire at over 200 mph.
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IHRA-Owned Racetracks Listed For Sale As Saga Continues
Numerous IHRA-owned facilities are now up for sale. We've got the tracks that have been listed for auction and when the auctions end.
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