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 2026 World Cup Finals was one for the ages. We've got who brought home the wins and what big records were set at the WCF.
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The NHRA has announced the 2027 Lucas Oil Drag Racing Series schedule. Check out where all the top sportsman racers are headed next year.
The new R-Series twin-turbo system from Hellion Turbo moves the turbos to the top of the S650 Mustang engine bay for 1,200 horsepower.
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Matt Hartford is having a career-best year in Pro Stock this season. Hartford's approach to business and racing has fed his success in both.
Cutting a good light is how you win races but that could be changing. GM has filed a patent for a camera-based launch control system.
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Recent Technical Articles
2026 MWDRS Champions Crowned At Xtreme Raceway Park
The MWDRS faced weather challenges during the Ronnie Hobbs Memorial. The team did its best to get the event in and crown champions.
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