Since it appears one could purchase a complete new Mazda 2 rotary engine
here in the US from a dealer either in pieces or an assembled short or
long block, could one purchase the same components or assemblies for a 3
rotary from a dealer in Japan? If so, would you have to walk into the
dealership to make the purchase, or could it be done from abroad.
Jim Kidd
First there is no such animal as a 3 rotor side exhaust port
like the RX8 engine. The 3 rotor has been out of production
for at least ten years. All were peripheral exhaust port versions.
The RX8 will soon have a direct injection side exhaust port two rotor
16B engine with 100 mm instead of 80 mm rotor housings. The RX8
Product Manager told me at the show it would be cheaper to make
than a 3 rotor with about the same power and be lighter weight
in the bargain. The other thing you get with wider rotor
housings is a better combustion chamber shape. Lower surface
area to volume ratio not to mention more torque.
You could build one using an after market
3 rotor e-shaft from Guru racing in Australia. It would
be a bit down on power as the RX8 center housing would not be
a true 3 rotor center housing. Using a stock RX8 center
housing as the second center housing will result in
smaller intake ports on the center rotor. This problem will
go away if you make it a p-port 3 rotor with side exhaust ports.
Paul Lamar ...No rotor no motor.
So it sounds like finding a complete new or used RX8 engine, + another
RX8 center section, another RX8 rotary and another RX8 combustion
section. This plus the after market e shaft should do it. P-Port the
rotary housings and have a "modern" 3 rotary engine.
OR, wait for the 16B, buy a new one, and go. Is it already a P-port? Any
idea of the timing of its availability?
Jim
I doubt the 16B will be p-ported for emissions reasons.
P-porting is something you will have to do yourself or farm it
out. Lets see 100 mm... 3.83 inches ...looks like we could run
2 1/2 inch p-port runners. No telling how much
power that would be. My guess is 375 HP.
Paul Lamar ...No rotor no motor.
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