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1993 Mazda Rx7 - Rotary Engine Rebuild - Part 3

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Intro - Part 1 - Part 2 - Part 3 - Part 4 - Parts List - Final

Welcome back. So now the short block is disassembled and I am taking time to clean all of the parts very carefully. A lot of people ask, "what should I use to clean these parts?" and I would have to say that kerosene works great for this job. Just make sure you have proper ventilation and a big exhaust fan is highly recommended if possible. You really only need about 2-3 gallons to clean all the motor parts. Next I will explain how I went about cleaning the engine parts and what tools were used.

Rotor housings:
On the 13-B motor, the rotor housings are the 2 aluminum sections where the rotors rotate (the combustion chambers). I was pretty lucky that my housings were in good shape after having 90k+ miles on them. I noticed a little carbon buildup around the spark plug holes which I cleaned off with a clean rag and kerosene. These housings should have a somewhat shiny surface on the inside and no grooves. For a…