Mazda RX-7 13B-REW Rotary Engine Build: Part 2
Porting & Seal Clearancing

In Part 2 of this 4-part rotary engine build video series, sponsored by Valvoline, Joe from RPM Motorsports shows us the technique required to properly street port the irons on our 13B-REW 2-rotor engine out of our 1993 Mazda RX-7. He also shows us the delicate and time-consuming process of clearancing the side seals to the very tight tolerances required to make good compression with a rotary engine, and he also shows us the similarly tricky process of clearancing the I-Rotary apex seals and Atkins corner seals.

Be sure to check out the video below for all the details and check out Episode 1 on our YouTube channel if you missed seeing us disassemble this fascinating piece of engine design and engineering.

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