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Originally Posted by NoHook
No it isn't  . If it is a 2 rotor it is 2.6 liters and a 3 rotor is 3.9 liters. This has been covered in a nother post and I came out right. They rate it 1.3 liters because only one rotory is operating at a time and that space in that rotary is 1.3 liters but if you combine the liter size of both rotaries, guess what !! 2.6 liters. We dont say a 5.0 liter motor is only 2.5 liters because only half of the pistons are firing at once  . Why do you think they call the 2 rotor and the 3 rotor both 1.3 liters.  The way they figure their math is messed up and it is a 2.6 liter when a 2 rotor and a 3.9 liter when it is a 3 rotor no matter what they "rate" it at. Why do you think the 3 rotor cars have to race in the 4 liter classes?  |
Well thats odd, because in my RX-7 book it is clearly stated and i copied it off-line:Engine Watercooled 2 rotors
turbocharged engine with intercooler
Displacement (cc) 654cc X 2
Horsepower (PS/rpm) 185/6500 205 /6500
Torque (kgm/rpm) 25.0/5000 27.5 / 5000
By that 654cc X 2 i would think that it means 654 per rotor and by 2 it would be 1308. Hence the name 13b for a 1.3 liter or 1308cc. Also, the 2 rotor and 3 rotor are not called the same thing, a two rotor is a 13b for 1308 ccs and a 3 rotor is a 20b for 1308 plus a nother 654 for the added rotor coming out to 1963. and the four rotor is a 26b using the same mathematic platform. {{{FLEX}}} Thank you.