do you think mazda is holding back on what this engine is really capable of doing seems like its all computer controlled its probally one of there better engines but why restricted it?maybe im just hoping. they do use it for racing one step away from irl or f1 so the motor cant be that bad can it?

 

FYI, Neither one of the series you mentioned use anything close to a production based engine for racing...

 

It's called marketing.

 

no but there traing there young drivers in the mazda series. hey my engine is in that car so its so its nice to see that on tv what other real production car is really powering its own series with the likes of rahal,andretti,unser and lyndyke.i never said they are f1 or irl cars but are engine is in the mazda star series and i think thats more bragging rights that we need to talk about gt boys go home

 

Emissions. Rotary is notorious for polluting some of the worst emissions in any engine. I'm also guessing fuel economy?

 

you don't like to use punctuations huh

 

no when i type its just plain english sorry im really lazy

 

Reliability... sure you can unlock it and do alot of 10000+ rpm on the rotary, but your apex seals are going to give way to the burning oil inside... not to mention the rest of the parts in the chassis that will not be able to handle the vibration and heat...
Everything is there for a reason...

You know those F1 Mazda cars have their engines offloaded and serviced after each race?
And they had a whole team of engineers to take care of it for that matter...

If you are prepared to put in that much attention to your engine, then by all means go ahead and get an "unlocked" 13B in your car... dont forget to disassemble it after coming home from Walmart though...

 

As we have seen in the aftermarket with Canzoomer there is a lot of room to play with on the RX8. Somewhere in the range of 20-25 whp. I think one of the reasons is cheap components, that is causing the voltage irregularities. Two, the US emissions standards. Car started at 250 hp, then went to 238 hp, & people are even dynoing close to that. Tuned, this car is getting almost 200 whp, that equates quite nicely around the 238 hp at the crank.

 

I read somewhere the first test renesis was was putting out around 275 hp but emisions detuned to 250 in Japan, 238 in USA, 228 in the UK. A sports car sedan does not need 275hp to serve it's purpose and still be fun. Mazda is testing 300hp renesis engines in their future rx7's to hit the market in 2006. It won't necessarily make that car any better than the rx8 at 238 hp. The rx8 is a very ballanced 4 passenger sportscar in it's present format. A true pleasure driving experience.

 

It's the emissions that's the issue in my book (no, I'm not stating facts, just my opinion) - and borne out by my experience with my original rotary car, my 1985 RX-7. On that car, you could easily pick up a full second or more in the 0-60 run and noticably change the torque of the engine by just advancing the timing. In my car's case, if memory serves, we advanced the lead plugs 12 degrees and the trailing plugs five degrees. The car had noticably more "snap" than before and would suddenly be able to easily spin the wheels in the 1-2 shift (a little "chirp) before, and be able to "chirp" the tires in the 2-3 shift.

But, the price tag of that trick was your mileage and emissions went to hell in a handbasket - exhaust CO and HC levels doubled and tripled respectively. I would guess that even with 20 years of R&D that that's still the issue. "Uncork" one of these engines and don't make emissions or mileage even a consideration and I'd think you'd see a BUNCH more power out of it.

Stew

 

i like my rx8 an di wish it was faster i think that it can be made faster but mazda is holding out on us maybe i should buy nos so my car can be fast and i dont like to use punctuation but this is english so everyone should understand it

 

If you look at it the same way many of you are every car manufacturer on the planet is holding back.

 

all car companies should just put race engines in every car. you call it crazy, i call it population control.

 

No manufacturer would deliberately and willingly "hold out" on something they could do to improve a car. It would make no marketplace sense for them to make an engine capable of higher hp and intentionally depower solely so they could "hold out on us." What holds them back are constraints of economics and regulations.


As a public service, I am supplying extra punctuation marks, free to any who need them. Copy and paste where needed.
.........
,,,,,,,,
''''''''''
????????

 

you forgot about the hyphens

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obviously the only reason car companies cant do certain things are because of epa standars and to maintain a decent level of fuel economy. sure every car could have 500hp, but who the hell wants to have to fill up every time with 100+ octane? not me.

 

Oh, wait. I see you supplied the hyphens.

Thanks.

Now let's make sure no one misses a period.

 

Am I alone in thinking Mazda does have a few renesis tricks up their sleeves, but wont reveal them until the release of their RX7 model? Makes sense to me that the RX7 would resume its place as Mazdas flagship, and in turn, will have the extra hp to differentiate it from its sibling, the 8.

 

That trick up their sleeves might well be factory FI. After all, the Renesis was an improvement on the engine in the 7, just not turbo-ed.

 

Someone hit the nail on the head! Marketing, that’s the name of the game. Why would Mazda, in its first years, release a RX8 with ___hp with no room to up the HP in it’s mid year life cycle? Most all car manufactures do this.

Lets look at Nissan, as an example, the 350z went from 287 hp to 300 hp, along with a ‘refreshened’ interior and a few other changes in its mid life cycle.

 

Nonsense, if Mazda could have released the Rensis with the original 280 projected hp they certainly would have. Especially considering they failed to hit 250, then 247, and it even looks like 238 is a bit generous. Emissions, cost, reliability, gas mileage, and from the looks of it the lack of an engine dyno probably held them back.

 

No doubt IKE, Mazda once again had egg on its their faces when they could come through with the advertised 248 HP, but that isn’t the argument here. The question is whether or not Mazda is holding something back? The canzoomer proves this. The problem is the cat pays the price.

 

I do think the same. It's all down to overfuelling for catalyst protection. Get the fuelling back to LBT and get the power back too. But adios catalyst durability...

 

I dont think Mazda is holding back on the engine's output, since everyone and their mother who has tried to squeeze HP out of the engine is seeing very minimal gains (not counting FI).

Intakes, exhausts, ECU piggybacks, porting, flywheels, everything....isn't getting the engines anywhere NEAR the intial "280" that Mazda had claimed with the first RX concept. Anyone who thinks otherwise is dreaming.

 

I think the 280hp figure mentionned probably by Marketing or Program Office people in early RX concepts refered to the magic Japanese power "limit". It also was the power of the very last series of RX7 in Japan. There probably were no Renesis prototype at that time making more than 200hp.
I don't think you can get 280hp on the Renesis by engine management recalibration only. Maybe 250.