If Mazda really wanted to, they would make a "15B" like some some have predicted. That would shut everyone up quick, however there is no need to produce a wider Rotary yet.

As for that article, it's complete bull. I have heard about it, thanks for actually typing it up for me to see. By their reasoning, any engine will benifit from IMA, that's not a Rotary specific thing at all. Hell, it definately would help the torqueless wonders that are Honda 4's. As for Rotaries being hard to start, not true. If you take care of the car and break it in properly, you'll never see any flooding problems. On a final note, I don't consider the multi-side port 13B to be so much a "vast improvement" as it is just plain different. The original dual peripheral port design is still superior for absolute power production, but early on the side intake port/peripheral port design was adopted for the first street Rotaries. They where quieter and more well behaved, not to mention cleaner. Emissions restrictions have evolved so far that a side intake/side exhaust engines became nessicary to create a US legal car... not to mention Americans don't like cars that you can actually hear the engine.

Anyway, the 13B is pretty much Mazda's "smallblock Chevy" if you will. It's been in production since the early '70s, and has more then doubled its power output over the years by pretty much moving around a few ports and lightening the rotors and counterweights.

If only Mazda Imported the newest Cosmo to the states, complete with 20B option.

 

i just have one question. why the heck is everyone comparing 1/4 mile times when both of these cars are clearly not tuned for the drag strip but an actual circuit course. it's nice that the S2K can beat the RX8 on the 1/4, but that only reveals a small portion of their true performance. i say take them both to the circuits and let their true potential show.

 

the rx-8 was not intended for the 1320, instead it was intended for the auto-x or street circuit. it is high revving and you can keep it up in the revs to get that good power band. it has alot of useable power where as honda (most) dont have much useable power. It has a 50/50 balance as far as weight goes. it comes with pretty decient suspension. This car is meant for the curvies.

 

wasnt there a three rotor engine that mazda produced? i think i recall seeing an rx-7 with a three-rotor engine swap

 

i think you're thinking of the the 20b tri rotor engine.

 

That's what I was saying about how I wished they brought the Cosmo over with the 20B option, the 20B is the twin turbo triple rotor engine availible only as an option in the early '90s Mazda Cosmo. The stock engine in those cars was a 13B-RE, a twin turbo two rotor, a slightly reworked version of the 93+ RX-7 13B-REW twin turbo two rotor.

 

whats the power difference between the two?

 

the turbo tri rotor didn't ahve that much more power but the tri rotors can put down 600+ hp to the wheels on pump gas and low boost, some of the tri rotors have put down over 1000hp but stock to stock the 13b vs the newer 13b they are about equal

 

In stock trim, I think they where in the low 300's. It was somewhat detuned for the family car it came in, though.

It has an extra rotor, which means overall the engine is capable of about 150% the performance of a 13B given the same percentage of air and fuel per rotor. Kinda like the difference between a well tuned 2.0l piston engine compaired to a well tuned 3.0l piston engine.

 

good stuff :bigok: