Peripheral port 13B idle
Homebrew 13B at idle; fabricated ports, header, intake manifold, etc, breathing through a Weber 48 IDA.
Trying some tricks with porting and header design and it only fired up for the first time about an hour ago, so I have no idea of power output, and very little desire to make unrealistic guesses.
13B Peripheral Port MaZDA RX-7 on dyno.
This is my 13BPP FC3S. back in 2003. I was Dynoing the car and brake in the engine at same time cause car was not street legal, so cant brake in the engine on street. plus in my opion the Dyno brake in just much easier and save a lot of time
Rotary Miata 12a peripheral port Loud and Fast
1991 miata mx5 with a 12a PP rx7 engine conversion with cat delete going to a cherry bomb and dual borlas,
Engine has super seal, racing water jacket seals, hardened stationary gears, baffle pan, racing springs.