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.
Paul,
Everyone wants bigger and better, not that there's anything wrong with that
if the power is needed.
I like the idea of the 16B, if it has a true direct injection - there
shouldn't be a problem with that, given the technology is currently
available and has been proven.
I also like the 100 mm wide rotor housings, given it's a better shape for
the flame front and more efficient burn.
If we just step back a little and look at what the RX8 and the 16B represent
and transpose those attributes to a single rotor this would IMHO represent
more than enough power for many builders. With reasonable weight savings, I
might add.
I look forward to what HP a configuration like that with side exhaust would
produce. I'm guesstamating 160 hp at 260 lbs all-up and I think that's
conservative, a 2" P-port would more than be up to the task.
Just looking at it from my perspective in power requirements!
George ( down under)
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