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 FeedsThe PDRA Pro Stars is bring extra excitement to the World Finals. Check out who will be a part of this special all star shootout at VMP.
Pulling off an LS or LT swap in a muscle car just got easier. Check out Moroso's high-clearance oil pans for LS and LT swaps.
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The U.S. Nationals is the kind of event that just has to be experienced. Here's a look at what The Big Go in pictures.
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Reigning Top Fuel champion Doug Kalitta clinched the $150,000 regular season championship and the Countdown top seed at Indianapolis.
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If you're looking to customize your ride RC Components has a wheel for you. The Kolor Pop wheels feature bold colors and great designs.
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The Yellowbullet Nationals is the perfect outlaw racing experience. Check out our massive photo gallery from this event.
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