^^^ Beautiful! Thanks!

 

Awesome pictures! Thanks for taking them.

 

Longer stoke and narrower rotor !
Wonder if it will rev to 9k like the renesis - I doubt it as the longer stroke will induce more stress on the eshaft which may limit rpm.

 

Great pics...whilst some are saying a 2010 release, I don't think anyone can really predict anything with certainty at this point of time.

Mazda engineers have obviously put a lot of time (and money) into designing the 16X, and they have addressed the issues we have all long being talking about...fuel economy, additional power etc.

If the changes will increase power by 20%+ and economoy dosen't improve that much, people will tolerate it if overall performance is better.

Mazdas done well to make this engine a successor ....

 

Lighter besides larger displacement, I like it.

 

Thanks for posting those.

Very interesting. Looking forward to seeing what it's like to drive in a few years.

 

I read some where a while back in 2001 on the RotaryIllustrated.com website that the limiting factor for RPM in a rotary is the strength of the stationary gear that the rotor spins around. (Or perhaps it was the rotor gear that is secured inside the rotor; like I said it was years ago that I read about this RPM limiting factor in the racing rotaries).
The stationary gears are bolted to the outside of the front and rear rotor housings protruding inwards. It is this gear that the rotor spins/rotates around. These gears that along with the ecentric shaft that absorb the combustion forces as well as the centrifical forces of the rotors mass.
The ecentric shaft has a much shorter ecentricity than that of a reciprocating (piston) engines crankshaft throw. So the ecentric shaft is subjected to exponentially less torsional stress than that of a piston engine. The ecentric shaft should be able to RELIABLY tolerate well in excess of 10,000 RPM!
It is the centrifical forces (WEIGHT) of the rotor that places high stresses on the rotor gear and stationary gearset at high RPM. If Mazda can keep the weight of the new rotors in check, then there is no reason why the new 16X can,t redline @ 9000RPMs in production form.

 

Wow thats hot. Now the real question: What car is going to get that engine???
Oh yeah and did mazda fix the oil filter so you car get to it with out ripping your hand off?

 

It could be in just two years Dave...you never know your luck in the big city....

 

Thanks ORX-800,,,, Great Pics, and this 16X looks like a 4 port not a 6 as many suggested.

 

*smashes glass case, takes engine and runs off*


i think more power, lighter engine and less fuel consumption will be very much saught after once the rx8 carries on with age. I could definately see people replacing the 13B-MSP with these ones once the engine starts to die.




seriously IMO, I think they need to rentroduce a tri-rotor twin turbo beast...

But then again with the japanese being japanese, they will soon make motors that are half the size of a V12 and produce 2ice the output...

 

The best info I have seen yet on the 16x thanks for the shots..

 

No problems....it's great to be back in Japan.

The 16X is a 6-port; the auxiliary port for the rear rotor can be seen in the 4th photo from the bottom - round hole above the rear primary port.

Cheers,
Danny

 

I see the hole you mean, but could you look inside it? I mean, is this hole connected to a port or is it a runner that is connected to the aux port in the six port version but that is still present (to save weight and to make the production process more similar) in the four port version?

 

Thank's for posting these interesting pictures! I see some interesting things! First the rotors seems to be a bit to the LDR combustion chamber that the 12A had. Then i noticed the extra boss over the trailing plug but what i can see no cast protrusion in the water jacket. Also noticed the boss on top of the rotor housing toward the trailing side, maybe Mazda try different location for the injectors? I think the engine will rew to 9000 rpm becausse rpm is what most automakers try to do nowadays to make the most horsepower on N/As. Hope to see a 280 hp 16X soon!

/Lasse

 

gonna put one in my rx8 when its out.

 

Hi fmzambon, I returned to the Motorshow yesterday and re-checked that hole...you are correct, it was only provision for the auxiliary port. The display model is only a 4 port.

Cheers,
Danny

 

Just save this pic on your desktop and zoom in. That part of the water jacket is in the shade, but the protrusion is definitely there.

One would only need a drill bit and a tap to fit the third spark plug (plus the electronics needed to fire it, of course).

By the way, thank you ORX-800 for rechecking the engine

 

I wish adding the third plug was that simple .

Paul.

 

Hi Danny,

Thanks again for being "our man" on the ground at the TMS!,

Yeah, Japan is a great place, been there a few times years ago for work (Mazda) and Holidays, toured Hiroshima Plant officially (then the series II RX-7 was coming off the line), City of Hiroshima reminded me a lot of Adelaide in size and style.
You should try and get there and tour the plant and new Museum.
The Hofu plant is their most modern where the 3 and 6 are born.

Danny, did MMC have ANY RX-8's on display at the TMS?
Have not seen any pics anywhere if they did.

ON YA Danny!

Later
ASH

 

Fantastic pics - Thanks *very* much :D

 

I've glanced through a lot of this and maybe someone has already mentioned this but something else to note may be the rotor edge chamfer that was added to the RENESIS. The super shiny surface makes it hard to tell but the angle and depth of this chamfer could be a big factor in port timing also, yeah?

 

No, the chamfers on the rotor edges are to help guide the exhaust gas to exit smoothly to ports on both sides, without the chamfers the opening of the ports and exhaust flow will be sudden and abrupt. I read this in the rotary books.

It's the shape/size/position of the intake/exhaust ports that determine the timing.

 

So I seen a picture a while ago, I didn't think any thing about it, but these new pictures particular this one showed 4 holes in the crank lob


a while ago I seen this next picture and shrugged it off as a cool render, then I noticed the 4 crank lob holes, then direct injection so I decided it was a 16x render. but what intrigues me is right by the exhaust it looks like a black circle was drawn to hide something? a logo maybe, or more importantly a turbo?
you decided


I know there was just a post on the next rx models being years away but one can dream...