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 FeedsJordan Vandergriff's drag racing path has been unconventional. We get to hear Jordan's amazing story on this episode of The Dragzine Podcast.
Leah Pruett and Matt Hagan are ready to wave the Dodge flag at U.S. 131 Motorsports Park. Both drivers are pushing for NHRA championships.
Chad Green heads into the Dodge NHRA Great Lakes Nationals in a prime Countdown spot. Green is ready to make a step towards a title.
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DMV N/T Heavy Hitters Street provides fans with great racing. Here's a look at how it all got started and what makes it an awesome class.
John Force Racing is hitting the NHRA Countdown hard. Here's a look at how the team is approaching the event at U.S. 131 Motorsports Park.
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Sean Madden Wins WI Outlaw Stick Shift Challenge At Great Lakes Dragway
The WI Outlaw Stick Shift Challenge featured the top H-pattern cars in the country. Sean Madden pulled off the win in the Outlaw Stick class.
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