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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 …

Years ago, I wrote about a customer who only wanted the tap from a TIME-SERT 2200 kit. More recently, another customer asked, “Can I buy just the thread tap from the TIME-SERT 3700 kit?” These types of inquiries are common. The TIME-SERT 3700 kit, an M11x2.0 Universal Head Bolt Thread Kit, is popular for many LS engines. When I asked if the customer had the full kit, he assured me he did, but his answers suggested otherwise. He claimed the kit was old and the numbers on the tap were worn off. Th …

CostHeli Coil kits are initially cheaper, making them appealing for less critical repairs. However, repeat failures often lead to costly oversized repairs, like switching to Time Sert’s Big Sert. A customer put it best: “Cheap ain’t good, and good ain’t cheap.”Tool LengthTime Sert kits often include longer tools for deeper applications, whereas Heli Coil tools are typically designed for surface-level repairs. Extending or modifying Heli Coil tools can add complexity.Oversized RepairsIf a …