Blank Insert for Go-Kart / QM Engine Case

The Blank Insert for Go-Kart / QM Engine Case by SCRIBNER is a precision engine component designed for builders and tuners working with small-displacement racing engines. This blank insert serves as the foundation for custom crankcase modifications, allowing technicians to fabricate specialized oil passages, breather systems, and cooling galleries tailored to specific engine configurations. Whether you're building a competition go-kart power plant or modifying a QM engine platform, this insert provides the structural base needed for advanced internal engine work.

Manufactured by SCRIBNER, a trusted name in small-engine racing components, this blank insert is engineered to integrate seamlessly into go-kart and QM engine cases without requiring extensive machine work. The compact dimensions (9.15 x 1.3 x 12.1 inches) and lightweight design (1.77 lbs) ensure minimal reciprocating mass while maintaining rigidity during high-RPM operation. The blank profile allows experienced engine builders to drill, bore, and duct custom passages for enhanced oil circulation, thermal management, and crankcase ventilation—critical factors in maximizing reliability and power output in small-bore racing engines.

This insert is ideal for go-kart racers, QM engine enthusiasts, and professional engine builders seeking a foundation for custom crankcase engineering. Installation requires proper fitment into the engine case, followed by machining to match your specific cooling and lubrication strategy. Compatibility is direct with go-kart and QM engine platforms; verify case design and oil circuit requirements before fabrication to ensure optimal performance and longevity during competition or high-performance use.