IF they can get almost the same power from the rotary..as the rx-7 with out using the turbos(approx 250 hp)..Maybe they should add a turbo to the RX-8 ...then the hp could be in the 300's...the only thing is they might raise the base price of the car..and i dont want that.

I suppose more power would be nice, after all, you can never have too much power! :D However, the projected 250 hp is probably adequate for most. As you already mentioned, a higher hp version would undoubtedly cost more.

Perhaps they'll offer a turbo on the Mazdaspeed version or maybe the RX-7?

Are they bringing the RX-7 back? I was under the impression that they were going to add a Turbo to the RX-8 in a few years. Can anyone confirm this?

Read the latest Road and Track yet? Possible 2005 RX-7 pending success of the 8.

Toadman,
Thanks, I'll have to check it out. I have a subscription to Car & Driver and need to get R&T (I think its better).

Originally posted by Enzo250GTO
Toadman,
Thanks, I'll have to check it out. I have a subscription to Car & Driver and need to get R&T (I think its better).

yeah but r&t doesn't have caba ceaser, no wait casaba csere, wait i got csaba csere how am i supposed to pronounce that when i cant even spell it;) :D

Pronounced "Saba-Sera". :D

Originally posted by Enzo250GTO
Are they bringing the RX-7 back? I was under the impression that they were going to add a Turbo to the RX-8 in a few years. Can anyone confirm this?

as far as the turbo in an rx8 check hamx0r's link to some memo's that he found. one mentions a supercharged and/or turdoed version later on ( mazdaspeed? it says mps) bossting power to 350bhp.
i couldn't figure out how to make a link to that thread as im at work and needing food, maybe one of the mods can do it. how about it toadman?

You mean here? (http://www.rx8forum.com/showthread.php?s=&threadid=449&pagenumber=3)
Cmon, this forum isnt that big to search, yet at least...

thats the one! searching works to, i just thought a link would be quicker but i couldn't figure how, thanks t-man:cool:

No turbos... I hate turbos as they ruin the mid corner stability when you floor it. The sudden power rush breaks the tires loose and well... bad things happen.

I would prefer NA, then if it needs it, asupercharger. But plz no turbo.

as far as the turbo in an rx8 check hamx0r's link to some memo's that he found. one mentions a supercharged and/or turdoed version later on ( mazdaspeed? it says mps) bossting power to 350bhp.

Yes, a RX-8 MPS with 350hp. That same engine will come in the 2004 RX-7.

The following MPS's (Mazda Performance Series) are also in plan:

- Mazda 2 2.0 (MPS?)

- Mazda 3 MPS

- Mazda 6 MPS. That car will be reveiled at the Paris Auto Show next month. With a 2.3L Turbo that preduces 250hp. That car will be sold in Europe fall 2003

- MX-5 MPS. The concept car had a 1.9L 200hp engine. A think the real MX-5 MPS will have the same specs. But I also think that this will be for the next generation MX-5/Miata

- RX-8 MPS. The 350hp

More Mazda: The comingup Premacy will be called "Mazda4" and the new MPV "Mazda8"

A turbo would be nice indeed, however when you look at the base horse power 250 is very sufficient. I agree more power is better but when you compare to a company like NISSAN in their past Z models the turbo model upgrades tack on about an additional 5K to the cost. You have to pay for your power. I have heard rumors about turbo upgrades upon demand/requests of consumers...I'd hate to buy the car the first year and then they come out with a high performance model year 2.

Not a turbo.... go 3 rotor!

I hate to sound like a girly man but isn't 350HP too much?

I mean the a RX-7 (coupe) should weight less than the RX-8. So a sub 2800 hundred pound car with 350 HP would be like a bat out of heck. I'd hate to see the insurance on that car. Sure there are drivers that can handle that kind of power but the average dude is just going to crash.

LOL... the guy I work for drives a TVR Cerbera 4.5... Oh man that thing flies... I think it's just about 1000 Kg and over 450Bhp..

He's had 2 of them and crashed neither... Mind you it'll wheelspin at any speed and in any gear.

The thing is an animal, still, the new Tuscan is faster!

hmmm... as a devout 7 fan, i just don't want to see it have the same engine in the RX-8... at least not to the same tune. the 7 should be something special as a halo car, not diluted by sharing out its power with another platform. but hey!! a 320 hp version of the 8 to beat the smoke outa the E46 M3 would be REALLY cool!! ;)

You want to talk about expensive insurance?? Mazda doesn't want to price itself out of consumers pockets because the insurance is through the roof. That was the biggest problem with the FD3S, people wanted a supercar, Mazda delivered, but nobody could afford to own said supercar ;)

3 Rotor. I like turbo, and it is better than nothing, especially if sequential like the FD3S, but 3 rotor would not have any lag, and based on the horrible complexity of the FD3S's turbos, would probably be much more reliable and easy to fix, unless of course Mazda is working on how to NOT have the problems of the RX-7.

Originally posted by fuz
No turbos... I hate turbos as they ruin the mid corner stability when you floor it. The sudden power rush breaks the tires loose and well... bad things happen.

Sounds like you are bit fuz zy on driving technique.:) The mid corner, aka apex, is the point of maximum lateral G's where in a balnced handling car both front and rear axles are at the limit of grip. You ain't supposed to "floor it" because any change in longitudinal loads will cause a slide. The exception is you are trying to compensate for an unbalanced car that is understeering.

I would like to see a supercharger on the RX-8 because a turbo has inherint heat and reliabilty problems. A SC would give more torque and power at lower RPMs although it would limit the high RPM performance. But I think its the way to go. low boost levels like 4-5 psi (or 0.25-0.3 bar) of boost would be sufficiant to produce 40-60 more HP.

also since the side exhaust ports surface area is twice as much are the old perifial port (can't spell) the volacity of the exhaust could be twice as low for all we know. The exhaust might not have suficiant volocity to get the turbo to spool quickly enogh to be any use.

hmmm... interesting thought, but no, you could screw with the cross-sectional area of the exhaust manifold to the turbo, and the diameter of the down pipe to compensate for those huge ports...
but yes!! i totally agree that a super charger (a nice LOUD blower!! hear it sing... ahhh...) would rock in this car, or any rotary, making up for the small displacement giving you (or well, probably your silly kid) the ability to win the stop-light wars with that GT Mustang... :rolleyes:
:D heh heh...

Originally posted by BlueAdept
Not a turbo.... go 3 rotor!


3 rotor... TURBO!

make that a limited edition... i'll buy one for sure. Reliable or not.

HAHAHAHAHAAA!! no, i don't think they'll make their sports sedan with power enough to kill a VIPER!! :D
cool, yes. but save it for the 7!!!
i think rotolewski hit the nail on the head when he said a small blower, roots type, and with a nice whine to it... oh ya... :)

That's why I suggested 3 rotor... it's nice and reliable... and somone can add a turbo later.

Originally posted by babylou


Sounds like you are bit fuz zy on driving technique.:) The mid corner, aka apex, is the point of maximum lateral G's where in a balnced handling car both front and rear axles are at the limit of grip. You ain't supposed to "floor it" because any change in longitudinal loads will cause a slide. The exception is you are trying to compensate for an unbalanced car that is understeering.

Oops, my bad. I meant just after that point, when you are still in the turn, and start powering out to get ahead on the straightaway.

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!

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?? :confused: 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...

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.

wow cool! where'd you hear that??

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

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....

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!!

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!

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

http://homepages.ihug.co.nz/~glenyuri/rx8-panspeed-1.jpg Click here for more details (http://homepages.ihug.co.nz/~glenyuri/rx8.htm)

Nice.... ;)

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

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.

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

Originally posted by 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

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).

Originally posted by 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!!

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.

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

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

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

Originally posted by 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.




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.

Originally posted by 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.
Even in the wet?

Originally posted by 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

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.

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

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 !

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.