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 FeedsLeah Pruett and Matt Hagan are looking for more success at Epping. Here's a preview of the TSR team's plans for the New England Nationals.
The PDRA is shining a big spotlight on its sportsman racers. The Thunder Valley Throwdown will provide big payouts for these racers.
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New England Dragway has been good to Elite Motorsports. The team heads to the New England Nationals looking for more wins.
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John Force Racing is loaded up and ready for the New England Nationals. Here's the team's preview for the event this weekend.
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S650 Mustang owners now have another option to dial up some big horsepower. Check out Vortech's new supercharger kit for the S650.
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Three Unique Vehicles That Stole the Show at Mickey Thompson Turn & Burn
You're always going to find cool cars at any drag-and-drive event. Check out these unique vehicles we discovered at Turn & Burn.
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