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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 …

DennisB WiseAutoTools.com © Summary: How to determine the right oversize thread repair when a previous parts store type insert or Helicoil has failed making the hole bigger. This question answered and more. We help customers find the best kit when a Helicoil or some other similar type thread repair has failed. There's a lot of information online however it's hard to know who's opinion to trust. A recent customer said "Everyone's got an opinion on thread repair kits online". That's true. I w …

DennisB WiseAutoTools.com © Summary: We cover three of the best oversize Ford spark plug thread repair kits available today. See the YouTube video below at the bottom of the article which is basically the same information covered in this auto repair blog. We have customers calling everyday asking for thread repair kits to repair a spark plug hole that was previously fixed, but the repair failed. Although we sell kits for other makes, Ford seems to be the one with the most spark plugs blowing …

DennisB WiseAutoTools.com © Summary: You guessed it we are talking about Ford spark plug blowouts once again. A recent customer with a 5.4 Liter in a 2004 Ford Expedition has experienced a SAV-A-THREAD spark plug thread repair fail which he purchased at local Napa Auto Parts store. He called us and wanted a suggestion for the best spark plug thread repair kit for his situation. We have a video covering different size outside diameter repairs. I show Big, Bigger and the Biggest spa …

WiseAutoTools.com © Summary: Testimonials for the Time Sert 5600 Triple oversize thread repair kit. Wise Auto Tools is happy to offer the Time Sert 5600 which is made in the USA. With so many China made spark plug thread repairs being sold at parts stores that tend to fail sooner or later. It's good to know that an American made kit can save our customers the expense of replacing a cylinder head. Engineered and manufactured in Reno Nevada, the Time Fastener company AKA Time Sert, has bee …