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 has added Mark Beatty to its leadership team. Beatty is ready to help the PDRA grow even more in 2027 and beyond.
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Jake Klein and his father built an impressive truck. The "Nasty Graham" is packing plenty of boosted Gen III HEMI horsepower.
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Mountain Motor Pro Stockers need some high level work in between rounds. Here's a look at what goes into turning around a MMPS.
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According to sources the IHRA has laid off staff for the Outlaw Nitro Series. The series has already amended its 2026 schedule.
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Strange Engineering's Max Extension Strut is deigned for maximum weight transfer. Learn how this strut can help any door car hook better.
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Meltdown 10 Brings The Golden Age Of Drag Racing Back To Byron Dragway
Nostalgia racing is back at Byron Dragway with Meltdown 10. This event features nothing but the best nostalgia racer has to offer.
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