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 NHRA Potomac Nationals could shake things up in the nitro points standings. John Force Racing drivers are ready to make big moves.
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The Potomac Nationals will give Ron Capps a chance to grow his points lead. Maddi Gordon is ready for a fresh start at a new track.
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Not all quick release steering hubs are the same. We take a look at what you need to think about when picking a hub for your build.
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Elite Motorsports wants to build on its success in Chicago. The team is ready to make a deep run on race day at MDIR this weekend.
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The Kalitta Motorsports camp had dominated in 2026. The team has a chance to keep the points leads in both nitro categories this weekend.
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Maple Grove To Host Massive IHRA Triple Crown Doubleheader
The IHRA is moving its Triple Crown Finale to Maple Grove. Racers will have the chance to run the final two events at the historic facility.
NewsSource Today, 02:40 PM