The 1986 and newer RX-7s all had a 1.3L engine displacement. The engine is 2
rotors, each rotor having a displacement of 654cc, which yields a total engine
displacement of 1308cc or 1.3 Liters. Therefore, you should change the
displacement figure to 1.3 Liters. You can check out the other RX-7 and the RX-8
that are already on this website to see that they are already listed at 1.3
Liters. That is the true prowess of the rotary; no other internal combustion
engine can match the power per liter ratio.
JJJ
05/02/08, 06:01:35
A month later...and this RX-7 still shows a displacement of 2.6 Liters !?!?!?!
What a travesty :(
The reason it has allot of power per litre is because it combusts 3 times in
just 1 rotation, so you could say a single rotarie is the same as a 3 cilinder
engine.
But where the piston engine is calculated at displacement for every combustion
chamber, the rotarie is only calculated for 1 combustion chamber.
If you would see the displacement the same as with a piston engine, the RX7
would actually have a 3.9 litre engine.
In the time a piston engine completes it's cycle a rotarie completes 4
combustion. So you could say the 1.3 litre twin rotarie is compareble to a 2.6
litre 4 cilinder piston engine.
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