SLWASFK

You're forgetting that the Spirit R Type A weighed in at a touch under 2700lbs.

I believe it also had 4.30 gears. And I know it had 17" rims, IDK what tire size though.

zoom44

ill tell you what i heard today from what i consider to be a credible source-

you all know how dedicated (possibly "obsessed") the rotary engineers are at Mazda- often working on their own time like during the "creation" of the renesis. Well they have apparently again been burning the mid-night oil on the "renesis 1.5/2.0 project" to the point that some of them were quite clearly exhausted. So Mazda has given them all a mandatory vacation for a little while.

this halt on rotary work could be the basis for the rumor ash heard

SLWASFK

Rotards forever :D

good post, zoom.

RX8Maine

Can a 2.0 L 2-rotor even be efficient with the geometry issues? I thought 0.65L per rotor was settled on because it was the sweet spot for efficiency and power.

rotary crazy

who said 2 rotors?

with todays technology maybe thats not the case anymore, maybe they can go much bigger now

rotary crazy

I was thinking 10a rotors

rotary crazy

I knew one of the big guns would say something

Great news man thanks!

wait! dint they make you sing something?

Rootski

iTrader: (1)

...assuming it wasn't retuned.

faboo

It would be a contender to the cars of today

and we are talking about 3+ years away

Icemark

Remember the target for the reni in full US emissions trim was 250. We all know how that changed in actual production

8 Maniac

iTrader: (1)

glad to see mac11 and brillo mentioning direct injection. I honestly dont know all the details of it, but before all these rhumors (true or not) about the next gen rx/rotary engine, I remember people such as rotarygod discussing how DI would be a good way of increasing hp as well as better emissions and that it would be a good solution to some of the common issues people have with the renesis.

If anyone can elaborate on what a decent/normal set up with DI can do (as far as hp improvements or emissions) that would be nice. Nothing too detailed, just something to help show how much DI can do since some people find it hard to believe a 300 hp engine is possible without a turbo.

I havnt really seen much of what ice has said in the past, but from what some of you say he is reliable. But I do trust that zoom44 most likely not post something like that without good reason so for all those doubtful, have a little more faith

DailyDriver2k5

Where in my post did i say that two turbos are better than one? My point is that it took two turbos to achieve that 255HP. Mazda could have used one turbo to get that HP as well.Hell they could have used 4 turbos for that matter.... So whats your point?

My point on the matter is that Mazda built a new rotary that was shy of 23 Hp of a rotary that used FI. Nothing more nothing less. Just like Nissan built a VQ3.5 to attain 300 HP N/A without using twin turbos as the old Z32. Thats call improvement in technology, nothing more nothing less.



How many people will buy a 30k+ car? Why don't you look at the sales figures of the RX-8 and compare them to previous sale figures of rotary cars of old. I know that awnser, but you need to look it up.

If Mazda built a new RX-7 next year, there would be plenty of people, new intrested ones and old vets alike who love rotaries that would buy one. No, the new rotary RX-7 will not sell like a Mazda 3 or 6, but it was never intended too, its a niche car, like most other sports cars on this planet.

Ajax

His point is that it didn't take 2 turbos to achieve 255 horsepower in the FD. You could do it easily with 1 and actually achieve a lot more horsepower. The FD had 2 turbos to decrease turbo lag. The turbos were piped up sequentially, not parallel, with a small turbo spooling first and then a large turbo spooling later.

DailyDriver2k5

I understand that, i use to own a Z32TT.

rotary crazy

not really, most new cars even with a power jump will have almost the same performance of today because of the weight increasse

A 2700 lbs car and 280+hp will be a contender in 5 years without a problem, a rx-8 with 300lbs less and todays renesis would be a contender today

mac11

iTrader: (1)

I've seen nothing that said the final drive was different. but you can go play around with that calculator all you want. changing the final drive size doesn't change the E.T. or the trap speed just the RPM at which those are achieved.

And that is deff. a bhp not whp rated calculator.

mysql101

Let me see if I understand this. You're saying changing gear ratios can't increase speed?

mac11

iTrader: (1)

I believe somewhere Mazda came right out and said DI was going to be the next step for the rotary.

From what I have read you can see upwards of a 10% increase in power on direct injection alone.


I'm making some very broad generalizations here so lets not get all ******* but heres what I have been looking at.

current reneiss = (230bhp/1.3)/10 ~= 17.69hp/.1L
next renesis(1.5L) 17.69 * 15 = 265.35hp
add DI - 265.35 * 1.1 = 291.88.

mac11

iTrader: (1)

What I said was go look at that calculator and put in all the final drive ratios you want it won't change the outcome of the calculator.

http://rx7.com/accel_calculator.html

rotary crazy

I think those # are about right, now put that engine in a 2700lbs kabura

mac11

iTrader: (1)

yea....exactly. call it whatever you want at that point, it will haul *** regardless.

rotary crazy

I just name the kabura so that people have a clear idea, but im sure mazda will give it a diferent name

rotary crazy

Hey ZOOM any info on the engines? hp? DI? anything you can tell us without getting in trouble?

Floyd

Or how about just some "general" information about the possible benifits if these make it into the next gen rotary engine?

rotary crazy

I dont get it, if a 1.5l rotary can be a sustantial improvement over the renesis why are they testin a 2.0l? what car would this engine be put in? how powerfull would a 2.0l DI rotary engine be?