If you watched us pull the 13B-REW out of our JDM 1993 Mazda RX-7 a few weeks ago, you'll know the engine was badly in need of a rebuild, and thanks to the support of Valvoline we're doing exactly that in a 4-part series featuring our long-time friend and rotary engine guru Joe Ferguson from RPM Motorsports. Enjoy this teaser of some of the wrenching action as we teardown our damaged 2-rotor engine, and be sure to check out the full episode on YouTube (direct link in the Comments below). | Speed