olddragger

iTrader: (3)

my "projection"
1- ion beam ignition system--possible 3 plug design
2- compression a tad lower
3- lighter rotors--but side seal moved from its current position--possible 0 gap side seals
4- better side seal springs
5- redesigned intake manifold and intake exhaust ports, possible duel TB setup.
6- ceramic apex, corner and possible side seals ( larger than current)
7- better engine coatings--especially for the stationary gears/rotors/oil pump/flat bearings
8- semi direct injection
9- redesigned coolant passageways
10- all aluminum engine, redesigned shape, reduced redline.
12- alternator that charges only on decelleration/steady state
13- secondary electric water pump with better radiator fan control
14- single/larger oil cooler
15- Porsche type PDK type transmission ( think about this...)
It will be designed to run hotter.

YUL PHL

iTrader: (1)

hoping you can retrofit into a prev. gen rx8

missinmahseven

I don't like the bit about reduced redline one bit.

olddragger

iTrader: (3)

reserve your opinion until after to drive it

RIWWP

iTrader: (2)

Yeah, it's not really that big of a deal. If we currently use a range of 4,000 to 9,000, does it really make it worse if they move the torque curve down 1,000 rpm and drop the redline 1,000 RPM? 3,000 to 8,000 is still a 5,000rpm band. With greater ecentricity comes greater leverage (i.e., torque). With greater ecentricity comes more momentum spinning off of center that has to be balanced. A lower redline is to be expected and understandable

Mazmart

iTrader: (12)

The cool thing is (I think I'm safe to put this out there): I was told by one of my Mazda insiders that the 16X is still a 9000 rpm engine . Of course I have no idea what the latest developments are nor will I ask. If good news is coming I will be building excitement to that point.

Paul.

olddragger

iTrader: (3)

thats news--especially when the renasis was never a 9K engine--not really.

nycgps

iTrader: (1)

You better tell us everything you know before we start boycotting Mazmart !

j/k

nycgps

iTrader: (1)

it's a 9K rpm engine, hell it can go over 10K on Mazda's test bench. It's just that you're not making power after 8.5K that's all

RIWWP

iTrader: (2)

Just depends on what RPM range the intake and exhaust routes are tuned for. You tune them high, and it will sacrifice low. Vise versa. So if people scream for low end torque, you are going to lose top end power, and Mazda will probably just lower the redline because there isn't a point in tuning for that if they go lower, and it's just added heat and stress anyway. Doesn't mean the engine can't, but that there isn't a point to it. If Mazda is simplifying the intake, it suggests a narrower powerband . Doesn't mean it has to be though. They have done plenty of crazy ideas in the past, and there could be a simple and elegant solution found

Or my prior point of increased leverage through increased eccentricity. That would be in favor of a lower redline for less e-shaft stress. But, doesn't mean it has to be.

PhillipM

It's faster to take it to the redline than it is to change early - certainly I haven't seen many dropping off early with power unless they've had a problem - and I haven't seen many piston engines make peak power right at the redline anyway, even race motors....usually means you've cocked something up if they do...

Definately a 9krpm+ engine once you give her a little tickle on the breathing side though

zoom44

even thats only true with Mazda tunes. Racing Beat showed very clearly with their first commercial tunes that its quite possible to have the power still increasing past 8500. that's why their tunes include a raised rev limit

olddragger

iTrader: (3)

run this oem engine/car consistantly to 9K on the track and you will wish you hadn't.
For street--every now and then--yea OK, but remember the tach has a caution marker at 8.5 K too.
At 9K balancing becomes very noticable, heat buildup increases tremendously and the e shaft is at borderline. Miss a downshift --say instead on hitting 4th at 85mph you get 2nd instead and the engine revs to 9.5-10K before you have a chance to catch it--its not good.
This is not a 9K redline engine. Remember also our tach reads a little slow......so at 9K on the tach it is really at 8.5 or 8.7--I forget exactly what.
Just because you can rev it to 9.5k every once in a while--hell you can rev it to 10K if you dont care--doesnt mean that the engine was designed to operate at that rpm.
The new developemnts will allow for more power so higher rpms will not be needed.

Footman

iTrader: (2)

I find fun in the revving part though, but I see manufacturers are going the safer route, more torque down low, less revs..

look at S2000.... go from 2.0L to 2.2L drop the redlines down
look at Civic SI... go from 2.0L to 2.4L drop the redlines down
I just hope Mazda doesn't go from 1.3L to 1.6L and drop the redlines down... that would just make the car seem tamer! I want a screaming bitcH!

PhillipM

I do, to 9.5krpm, and loading the engine for faaar longer than you would on track. And it loves it.
And my tach is spot on to +-50rpm...

As for not revving high in case you mis-shift, we'll, you could say that for every single engine out there, answer is, don't put it in second when you want fourth, problem solved.

olddragger

iTrader: (3)

yours is not oem --lol!

I do need to elaborate though. What i am meaning is that this engine will not last its expected street life if you are constantly running it up to a true 9K rpm.
E shaft flex etc really doesnt become an issue until you increase both power and rpms to 10-11K. But supporting cooling, oil supply, rotor clearance ( along with coolant temps) simply means in the best interest of engine life--dont go to a true 9K a lot. Now a much lighter rotor and better oil supply changes everything.

PhillipM

Yes, but the point I'm trying to make it niether would many production engines!

rotarygod

In terms of longevity at 9K rpm, I'd throw a Renesis against any production car piston engine.

WTBRotary!

iTrader: (6)

Im sure there's so much we still don't even know. Although these updates are getting me pretty excited for sure.

Speed_8

they should price the car around the same as the brz, or go all out and make it a high end sports car, 40k usd range. It has to be over 300hp to boot. Thats just my opinion.

77mjd

I was thinking about this too. Now with the BRZ and FR-S coming, Mazda could use that as more direct competition and should easily be able to come up with something in the same price range that would outperform them (even though I'm sure the current 8 already would outperform them). It might be much harder for Mazda to go after the Z, Genesis Coupe, etc. in performance and stay in a similar price range while at the same time convincing people to drop mid 30s-40k on a rotary.

Personally, I'd rather see them go the BRZ route ( lighter with a bit less power). A rotary with a true 250-275hp in a 2500-2700 lb car would be a monster.

olddragger

iTrader: (3)

trouble with the 40K+ range is you start to complete with cars like the Mustang Boss etc.
300hp will not atainable without really high rpms or FI. I am thinking maybe 275 hp or so. Maybe. Life expectacy will be increased and emissions will be good. may start seeing multifuel use?
Remember also we have to run that damn ethanol crap so gas milage will never be as good as pure gasoline like in other countries.

YUL PHL

iTrader: (1)

why not give the miata a backseat and give it a hardtop?

bse50

it's called rx8...

olddragger

iTrader: (3)

Lol!!!