Hi all,
Just curious,has anyone on the board heard any legitimate news about a higher displacement rotary engine in the works at Mazda?

While the new 13B/Renesis motor is a wonder in that it produces 230hp in an emissions friendly package the reality is that whatever followon to the RX8 Mazda comes up with will require more hp than the current engine is likely to produce barring a turbo. The current generation of piston engine development has gotten to the point that the venerable 13 series engines cannot really compete with even mid level piston cars now. Doesn't anybody else find it odd that the Mazda 6 has more power than the RX8?

Just curious,

Peacedog

 

Wasn't there talk of a 16B for the RX8? Don't know where that went or if it is true.

 

i heard they were going to call it the 16C?? as well that they were gonna use it for the "new 2010 rx7"...i forgot where i read this but its out of my head that i remember reading about...

 

There was a post in this section that discussed that with links to some magazine articles or something, the post may have been moved though.

 

i remember reading somewhere the revised RX-8 for 2010 would still have the renesis but with direct injection this time

 

The base Mazda 6 only puts out 156hp, and 210 with the v6, compared to 232hp in the Rx8. The MazdaSpeed 6 version that puts out 270hp is turbocharged, so it's not exactly an apples to apples comparison. If you compare NA to NA, the Rx8 has more HP.

 

Non Mazda rotary, but a 20:1 compression.

And it can burn Diesel!!

http://machinedesign.com/ContentItem...rnsdiesel.aspx

 

This article seems to hint at it.

http://rotarynews.com/node/view/947

 

Richter12x2, Fair point about about the Mazdaspeed 6.

My main thought is that these days 230hp is not enough to truly get a car into the non-ricer/legitimate sports car category.

I know that Mazda had problems getting the 20 series engines past US smog, although with the new Renesis system the side exhaust setup might take car of that.

Something between a 13 and 20 series engine using the Rensis design could easily make 300hp and be smog compliant.

I just wonder if it would be retrofittible into earlier model cars. With Mazda ending support for the 12A and early 13Bs this may become an issue for alot of us in 5 to 10 years as all of the NOS parts dry up. Assuming rechroming/ceramic efforts for older model housings continue to be a mixed pag.

Cheers,
Peacedog

 

True, but I don't consider the Rx8 as a pure sports car anyway - just like I don't consider Mustangs, Camaros, Chargers, GTOs to be pure sports cars. Any of them, done right, could be a lot of fun to drive though.

Rx8 starts at 230hp, which was a lot higher than the old NA Rx7's - with a little bit of intake and exhaust work, I'm thinking you could get to 250. If you really want to go nuts, my suspicion is that you could make a stock TII turbo work with some modification, and you'd be seeing a reliable 300hp - if you can stay on top of the fuel.

 

1. where did you get that idea
2. how long do you really expect them to make parts that they dont sell tons of?

if you check, today, mazdausa has enough housings, both rotor and side to build 60+ 12a's, isnt that enough for a 30 year old car?

 

I heard from somewhere that they were going to code the engine 16X, but that's just what I read...

 

just playing with ya

 

Didn't you guys just read the above link from Tassai? It looks like they are not only making the rotors wider but to change the stoke, they would have to completely enlarge the trochoid housings. Plus they are using direct injection and (my personal favorite addition) aluminum side plates. It's about freaking time they did that. I hope this change doesn't effect the high rpm red line much (even though I believe it will). I hope the larger stationary gears and e-shaft are beefed up substantially since the centrifugal forces of the heavier larger rotors are now further away from the e-shafts center of rotation. That will put way more stress on them.

 

Just found more info.


http://www.mazda.com/motorshow/techn...sis/index.html

 

Huh, I read an article in automobile magazine that said they coded it a 16C... I guess that would make sense. Seeing as how 12A -> 13B -> C series Engine...?

 

Someone hasn't seen my 6 port turbo build thread.