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When unboxing a Time-Sert thread repair kit—such as the popular 1015 kit or other engine-specific thread repair sets—one of the first things technicians notice is the geometry of the cutting tools. Rather than featuring a fully round shank like standard jobber drill bits, Time-Sert drill bits, counterbores, taps and driver tools are engineered with square ends. This design choice is not accidental; it is a fundamental engineering feature designed to maximize torque transfer, improve …

When a spark plug blows out of a cylinder head, it’s a bad day for any vehicle owner. For technicians and DIYers alike, finding a reliable, permanent fix that doesn’t require removing the entire cylinder head is the ultimate goal. While certain makes and models are notorious for this issue, the Wise Auto Tools Spark Plug Thread Repair Kit (Part # 4412S-187) is the versatile, heavy-duty solution engineered to handle the industry’s biggest problem children—even when working …

A recent customer reached out after installing a rebuilt engine from Jasper Engines in a Chevy. The issue? Stripped threads in the block for the starter bolts—specifically the 3/8-16 size. It's a frustrating spot to find yourself in, especially on a fresh rebuild, where the threads start about 1/2" down into a blind hole with roughly 15/16" of usable thread depth. The starter needs solid hold to avoid any movement or chomping on the flywheel during cranking. Hello, I'm Dennis Bandy, owner …

We recently received a great question from Michael, a DIYer facing a common problem of stripped threads for head bolts: repairing He's got two stripped holes for cylinder head bolts on a Pentastar 3.6L engine. His ask? “Would I be able to rent a Time-Sert 8313 repair kit or pay a usage fee? It’s a lot for me to afford for a one-time use (at least I pray I never have to do it again). Any help would be so greatly appreciated, thank you.” Michael’s situation is one many gear …

When a Save-A-Thread insert fails, it can leave the spark plug hole in your engine significantly larger than its original size. This scenario often requires more robust repair solutions, such as the 389XL Triple Oversize Thread Repair Kit. Here's a comprehensive guide on how to tackle this issue effectively.Understanding the Problem Spark plug threads can become damaged or stripped due to various reasons, including cross-threading, over-tightening, or the failure of previous repair attempts …