danger

omg another factory 20B car would be sweet! can you imagine that? supra, viper, corvette, and any other car would be anhilliated with a street ported 20B. Put some aftermarket products into it, and you can have yourself one sweet car for the track.


Mazda, do it! DO IT NOW!

wakeech

ya fuz... power does that, but it's only 'cause you run out of grip... aero solutions or softer tyres (among many MANy other things) would fix that in a jiff, other than a prudent right foot (but who the hell wants to do that, right?? :D)...

and danger, ya, a 20B RX-7 would annihilate a Supra, but a VIPER?? i really don't think so... a supercharged 20B RX-7 would kill a Z06 (MAAAAAAAYBE), but i still don't know about that... an 8.0L V10 is still, uh, big if you know what i mean...

as for having that much engine in an 8, i'm still sticking to my guns and saying that it's waaay too much for a sports sedan... i think that BMW is REALLY pushing the envelope with 333 in the M3, and with a low-pressure super charger, i could see the RENESIS easily challenging that number, but man, that's a LOT...

BlueAdept

Mazda is, according to some sources over here, testing both supercharged and turbocharged renesis engines with a view to picking a design for an as yet undisclosed purpose...

Can't speak to the reliability of that information though.

wakeech

wow cool! where'd you hear that??

BlueAdept

It was on an editorial on either the pistonheads website or somthing similar... I'm trying to remember who showed it to me...

zoom44

yeah i just read that sometime last week. i have to remeber to copy those things when i read them. i cant remember where i saw it....

SPDFRK

wakeech, I have driven my friends M3 and it is not too fast by any means as long as a car has good suspension you can throw a bunch of bhp at it and not worry about driveability issues. In order to match power to weight ratio with the M3 using 2970 lbs for the 8 than we need 289 hp which shouldn't be hard to get with only bolt ons. I can't wait!!

danger

well maybe not an n/a street ported 20b. But imagine a turbo street ported turbo 20b? what about a twin turbo version? OMFG! thats it im buying the car! i don't care if its reliable or not, im buying it and making viper owners cry!

RX - 8

dont know how correct i am ..but i've notcied this about rotary motors...the 1st gen sevens..those motors last forever...the seond gen N/A's last long too...but the tII had some problems and the 3rd gens...well i'm sure we all have blown a motor so far...you think maybe that has something to do with the turbos?..if so i hope that mazda has did enough research to fix the problem with the Renisis motor

GoRacer

Click here for more details

Toadman

Nice....

wakeech

make those lights flip ups with some general refinement, and that's the 5th gen rx-7!! pretty wild...

Donny Boy

No turbo please. Just want it normally aspirated but with more power, maybe. Keep in mand that this car weighs at least 350 pounds less than the 350. Plus it's better looking and seats 4 and has the greatest dash and . . . need I say more.

MikeW

I thought the reason that the RX-8 was delay was so the engine could get its emissions certification down to ULEV (US) A turbo would have too much cold start heat drain. Most companies have moved away from turbos, unless they are adding direct injection.

I vote for a 350 hp tri-rotor RX-7 for $35K, assuming the RX-8 starts at $25K

$100 bucks a horse sound nice.:D

Grimace

Rotaries make a lot of heat. Turbo's exasperate the problem. The combination of the heat thrown off by the turbo + the heat from the engine cooks rotaries.
That not to say a turbo renesis can't be reliable, but there better be some really good cooling (better than what came with Turbo II 2nd gen and FD RX-7's stock).

irresistibo

The M3 is supposed to be pretty tame with the traction control on, take it off traction control and your spinning the wheels on any gear.

That picture of the " RX-7" is all photoshop, ive seen this kind of stuff a lot, its not gonna look anything like that, probably. The side lines were taken from a 3rd gen, the lights and bottem half of the front end are RX-evolv, its not gonna look like that. Kudos to the guy that made the pic though, it looks beautiful, wish i had photoshop skillz like that.

Gimme a high hp version of the RX-8 and i would be happy, gimme a 4th gen RX-7 in road trim, and I would be the happiest fool alive. I dont care if its 3 rotors, turbo'ed, supercharged, i would find a way to buy a 4th gen RX-7, not sure yet on the RX8, my heart still belongs to the RX-7.

Takumi

what about a aftermarket turbo? bolt on turbo i dunno...
Thats possible isnt it

zoom44

yes but you have to watch the boost pressure and the heat generation. too much of either and the engine go boom!
:D

Takumi

as far as heat how would you compensate for that on a rotary ??
please forgive me if my questions are extremely newbist but im new to rotary. And as far as i read on the other threads ... it say that the turbo is the main reason why it creates so much heat and the engine can't handle it? how will the renesis rotary conquer the previous 13 b rotary . When it comes to turbo. not that Turbo is that important. I could go either way turbo no trubo infact i almost prefer na

SPDFRK

The first thing I do when I get in a car is lose the traction control and it won't spin the wheels in any gear just barely turn them over in second you may get a squeak in third if you shift without lifting off the gas but that won't ever happen because your not gonna drive that car like you just turned 16.

Quick_lude

Even in the wet?

Grimace

Well, the Renesis puts out as much power as the previous twin-turbo engine, gets better mileage, and should be more reliable. I'd say that "conquers" the previous motor.

How would you compensate for the heat once you go turbo. Big intercooler. Lots of cooling ducts. Don't drive like a maniac 5 minutes before you park the car, and let it idle before shutting it off for a while.

SPDFRK

That is definately when the ASC goes off!! I'm from Michigan and loved driving/sliding in the snow but out here in AZ the best thing I can get to play on is rain and that only happens about 14 days a year. It actually rained here today so I was able to make one lefthand turn at lunch and get the tail out, made the rest of the day just flyby.:D

Takumi

Thanks grimace lots of air ducts and large intercooler. But i meant by conquer was how will mazda conquer the heating issues hehe. But I understand now Thanks to you Thank you very much !

wakeech

well, intercoolers and ducts aren't the be all and end all...

intercooling is like trying to keep heat out of the engine before it gets there, and cooling ducts are only effective if routing air to a cooling system, like an oil cooler.

because the engine oil is the only medium in the engine which can carry heat from the rotor itself to the outside of the engine (as it's the only liquid in there), keeping the oil cool is of paramount importance when looking at cooling the ENTIRE engine, because it's a really really crappy coolant.

then, other stuff like the radiator, fluids, lubes, ducts, etc etc...

but ya, as far as the rest of the engine goes, effective air management (no, bigger holes aren't necessarily better), cooling systems and hardware capable of handling the application, and as Grimace said, brains-in-your-head driving will ensure safe and smooth operation.