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 FeedsSmall tire racing is always evolving. X255 has been introduced to give racers a lower-cost option to compete at big events.
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The SEGA racers put on another great show. Check out this recap of the Brainerd Motorsports Park event and see who brought home a win.
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There's nothing like a new race car. The Decker family is debuting its new centrifugally supercharged Camaro at the IHRA Triple Crown.
High performance vehicles run on money and good maintenance. Moser Engineering has what you need to maintain virtually any rearend.
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Veteran racer Shane Molinari tragically lost his life following an on-track accident at Sonoma Raceway during the annual RaceWorz event.
Recent Technical Articles
Special Delivery: The Russell Family?s 1,379 HP 1979 Dodge Li?l Red Express
This isn't your standard Li?l Red Express. Rick Russell has turned this Dodge truck into an 8-second drag-and-drive monster.
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