Thanks to Glen Deutsch for the excellent info!
i’ve wondered about those, having had, (and loved) a Mazda RX-7. Since there are very few internal moving parts spinning around, (like a crankshaft, rods, and pistons), they really do scream. I loved embarrassing Corvettes and Jaguars at stoplights. (Of course, embarrassing an early 80’s ‘Vette is not that tough!)
The apex seals at the tips of the rotors are a definite wear item.
The fuel economy is not great, and it put out plenty of emissions. More than its fair share, for a motor that displaced only like 1,400 CCs.
Excellent throttle response, and very wide power band.
Love the sound they make!
All in all, a great deal of fun.
