Concentricity of your valve seats and guides is a critical tolerance that must be controlled for performance and longevity of your engines valve train.

As always, proper preparation with cylinder head machining, and reaming your guides prior to cutting your seats, will guarantee the best results.

The Rottler SG9MTS makes this a quick and easy step. This simple operation can be performed in minutes right on the machine prior to cutting the seats. With the optional Collet Kit R1, any reamer for any size guide can be used on the machine.

Follow along as we demonstrate step-by-step how to cut 5-angle valve seat profiles on the Rottler SG9MTS

Rottler’s Ryan Thompson delivers an in-depth tutorial on how to cut seats and ream valve guides using the Rottler SG9MTS.

The SG9MTS is a seat & guide machine designed for job shops, performance shops and general purpose engine work. The machine features Rottler’s patented Uni-Pilot technology with Manualmatic software, delivering stress-free, precision hole-to-hole machining of Intake and Exhaust Valve Seats on any Cylinder Head.

Starting with a new small block Chevy block from Dart, Ryan walks through the tooling, machine set up and cutting 5-angle valve seat profiles.

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