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This article is in video format at the bottom of the page! How severely can a spark plug hole in an aluminum engine head, which previously had a repair insert and has since blown out, making the hole bigger and showing signs of erosion, be damaged and still be fixable? Basically, there needs to be enough material to ream or drill out so that complete threads can be tapped to accept an oversize spark plug insert. The image above shows a spark plug hole after a Napa Fix-A-Thread insert failed, lea …

We have a short article called "Harley Davidson Spark Plug Threads - How to Fix" on spark plug thread repair kits used for first time repairs on Harley Davidson and other makes of motorcycles that has received a lot of attention lately. We've also been getting emails and phone calls on how to make a repair after a parts store insert has failed making the hole bigger. For second time repairs on M14x1.25 there's a Big Sert kit available. Big Sert is Time Sert's name for an oversize thread repair k …

WiseAutoTools.com Summary: Prevent future spark plug blowouts in your Ford Triton engine with one of our  spark plug thread repair kits. The Calvan 38900-8 kit is praised for its ease of use and effectiveness, while Helicoil inserts may not provide a permanent fix. The TIME-SERT 5600 kit is ideal for larger repairs and has been used successfully even when a Calvan repair failed. Follow proper installation procedures and the updated torque spec of 20-22 ft pounds to keep your engine …

WiseAutoTools.com © Summary: The Calvan 38900 Ford spark plug thread repair kit has the tools needed to repair many 1996 and up SOHC 2-Valve 4.6, 5.4 and 6.8 Liter Ford engines. We identify all the components that make up this spark plug thread repair kit. This kit is used as a first time repair or for a second time repair when a different brand insert like Helicoil Save-A-Thread has failed. The thickness of the insert along with the large lip makes sealing up oversized holes possible, espe …