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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 …

WiseAuto Tools Summary: A blind hole is a type of hole that does not go all the way through a material, but instead, it has a bottom or "blind" end. This means that the hole does not exit out the other side of the material but rather terminates at a specific depth. Blind holes are commonly used in manufacturing processes for a variety of purposes, such as creating a cavity for a screw or bolt to be inserted into, or for creating a recess for a nut or other fastener to be installed. They can also …

WiseAutoTools.com Summary: The article discusses the problem of repairing a hole that is shallower than the shortest available insert, and how to solve this issue with Time-Sert. In certain cases, repairing a hole can be problematic if the hole being repaired has a depth shorter than the length of the shortest insert available. However, this is a rare issue with Time Sert as they offer a wide range of insert lengths. Nonetheless, there are situations where the shortest insert …