Originally posted by Sebring_S2k
Kinda off-topic, but how come the automatic RX-8 makes more torque at a lower rpm than the manual version?
Because the automatic transmission model is limited to 7500 RPM. The 6-speed peaks past 7500 RPM, so Mazda tuned the automatic version to peak before the limiter kicks in.
Originally posted by Tirodēslc
"First things first. the new renesis engine in the rx8 is a 2.6L. the older versions of the 13b were 2.6L to. the 12A in the 1st gen rx7 was a 2.3L and the three-rotor 20b is a monstrous 3.9l. if you've been told a 13b was 1.3l, you've been lied to.
"on a four stroke there's only one intake stroke for every two revolutions, so from a breathing standpoint, displacement is how much combustion chamber volume gets sucked in over two revolutions. for a rotary, with one intake stroke per revolution, that means measuring two combustion chambers per rotor, not one, like mazda says. each chamber in a 13b displaces 654cc, so by mazda's two-stroke method, a 13b is 1308cc. by my four stroke, its a 2616cc"
This is not a new argument.
The displacement is still 1.3 liters because the combustion event occurs in the same location every time. The fact that there are "two separate chambers" does not change the fact that there is only one combustion chamber per rotor housing at any given moment, and it only exists at one point in space.
If it was really 2.6 liters, then Mazda would call it 2.6 liters.