Why is this so difficult? just curious becuase I want to know.

Some people say its becuase the way the ECU works that it can't handle boost that well (wtf?). Others say its becuase of the high comp rotors it has, wich is understandable. What if you swapped in the FD rotors and called it a day? I thought the renesis is a better design than the regular 13B, wouldn't it also have a better intake?

Just some questions..

 

I remember seeing an article that RE turbod the rx8, the numbers werent impressive I remember that much, I can go look for the article it if your interested

 

So i take it you havent read about the australian rx-8s that are now coming turbocharged, factory i think dont quote me.

 

yea i heard about that, its a big *shhhh* secret apparently. I bought a mag that had an article on the 'mystery' 8 with forced induction. it was supercharged.

I wonder how much power you could get if you put 9:1 rotors in it like the FD?

 

greddy makes a single turbo kit for the 8 I believe it uses a td05, its not that pricey either, at 5 lbs of boost it puts like 230 to the wheels, come with the greddy e-manage

 

the one that the aussy's make are supposed to me like 300hp +! i saw it on here somewhere..i will get the link tomorrow..i read about it though..and it's from mazda!..

 

I thought the 8 made 250 hp, i guess thats bhp not rwhp.

 

the problem is the passenger side motor mount. the mount actually goes through the header making it very awkward to fit a turbo in there. i read all about the renesis on yawpower.

 

I think it also has alot to do with the exhaust ports not being in the rotor housings. I 've heard some one say it causes to much heat, and the space issue as some one mentioned above. thats why people are using blowers. But, what do I know!

 

adding turbo charger isn't the main issue. The problem is on the ECU where nobody was able to hack it and reflesh for boost applications. Customers usually want plug and play install. They don't want to deal with programming e-manage or any aftermarket ECU. The only ECU I could think of that could control the electronic throttle is probably motec ($5k). There's no easy way to do it as far as I know.

 

The side seals in the Renesis motor are more exposed than the 13b in the 7s ... therefore , they are exposed to too much heat from a turbo application causing early engine failure and possible detonation issues ... Right ??

 

There's a number of factors here.

First, the ECU on the RX-8 controls a TON of stuff on the car, not just the FI system. The traction control, the ABS, a BUNCH. Ripping out the ECU and going standalone simply won't cut it for a street car. So, fuelling is tricky.

Next is space. As stated, the passenger side motor mount actually goes through the stock exhaust manifold - it's VERY cramped in there.

But, things are progressing. Greddy's kit is now out - VERY nice, very complete kit, uses the E-manage for fuel control. The E-manage actually works really well on the RX-8, and is sufficient for a modest turbo setup. Here's pics of it on Mazdatrix's site -
http://www.mazdatrix.com/8turbo.htm

$3200 for turbo, manifold, intercooler, new oil pan, E-manage, all the stuff - that's a DAMN good deal, and a really well designed kit. And that's Mazdatrix's "no favors" price.

Mazda Maniac on the RX-8 forum has built his own custom turbo setup, and just got the car running with it. This dude is really sharp, and pioneered the use of the E-manage to tune the fuel mixtures in on the '8 -
http://www.rx8club.com/showthread.php?t=46776

I just don't think the RX-8 is going to be a big horsepower platform. You'll be able to get some good power out of it, but I wouldn't expect 600hp monster cars or anything. The car just wasn't designed in that fashion - it was made to be a four seater sports car, not a fire-breathing monster. It's a totally different car and platform than the RX-7.

Dale

 

$3200 Woww !! That is affordable and you get some goodies with it How 's it going Dale ?? Haven't heard from you in awhile ... hope all is well . I see you got an FD ... awesome !!

 

The 8 makes 238 hp at the crank, originally it was listed at 250 but due to mazda having to richen the **** out of it for emissions and what not it was downgraded.

 

nice bit of info, thank you. The reason im interested is becuase the new seven is also rumored to use the renesis, so hopefully things will progress into the high hp numbers with a bolt in.

 

In this months Turbo mag, they have a 3rotor single turbo'd RX8. Put down alittle over 900WHP, that thing is sick

 

Yeah I read it, but thats the 20B. I think in the mag it was PP/turboed it was just nutz. The best turbo-streeted rotary I've ever seen.

More interested though in the turboin of the renesis. I did some searching about the 2006 rx7. There was a rumour that it would use the renesis with a 1.6L displacement engine!
But then there was a comment from mazda saying that they had no immediate plans at all of bringing the seven back and were only interested in the 8 at this moment. It makes sense, theres only one plant for the rotary and I think they only have enoughe production room for one car.

Theres a nice racing beat exhaust out for the 8, the greddy kit and a nice k&n intake and with all that combined im sure you could make 350rwhp.

I still dont understand how you get less power from using a peripheral exhaust and more from using side housing ports..