VelociRedBeast

I Just want to know in plain writing. Is there anything going for the auto and if so who's working on what? I want this in straight words and I want a website or thread of someone working on something. All I keep seeing is "I think there is a.." "auto *Might* not be able to go much higher because..."..Please help, is hoping to have a powerful automatic some day a lost cause or not?

NgoRX8

iTrader: (1)

I hear ya man, I'm wishing for more power in the auto as well. Someone please hear our cries. I would love to have a strong automatic. Even if I were to switch to a manual now, it wouldn't be worth the sweat I put into this car. But maybe someday the thrill of the drive will reach me. :D

DreRX8

Re-Amemiya has a turbo kit available for the auto RX8--don't think its for sale here yet. 2nd--My10ae is tuning the Canzoomer unit for the Auto 8 now. 3rd--there is always nitrous. Add those above mentioned mods with exhaust, high-flow cat, high flow air filter then you have a decent performer. The RE-Amemiya kit is supposedly 260PS--I assume its wheel horsepower--not sure though. The auto RX8 is still a decent autocross car.

VelociRedBeast

Can someone who reads japanese how much the kit costs? Here's the link..I can't read any of it though..IF it's out already which i doubt..

http://www.re-amemiya.co.jp/rx_8/

therm8

http://www.bulletproofautomotive.com...il.php?ID=3510

VelociRedBeast

...nice...how come no one on here has this yet? wow, I'm gonna have to put %75 of all my paychecks aside for like 3 years to be able to afford this..oh well at least my warranty will be expired by the..

therm8

it's $5000 and pretty much identical to the Greddy kit (with the exception of tuning) which costs half that, I for one refuse to pay that.

VelociRedBeast

Well, Re-Amemiya has been doing so much for the 8 community and it's a great company, so unless Greddy comes out with something for the auto before I have enough money for the Re-Amemiya, then that's what I'm getting.

JeRKy 8 Owner

SSR is planning onmaking a turbo kit for both the manual and automatic too butyou have to be patient. VelociRed youdont even know if your tranny isgoing to be able to handle Re-Amemiyas kit.

therm8

I doubt the transmission will be a problem with a 25-30% increase in power.

rotarygod

I wouldn't consider upgrading any engine a necessarily lost cause. Llok at how many peope build and modify little Honda engines to get some amazing numbers. Even the low power Renesis is superior in power to ANY stock nonturbo 13B rotary. Look how much power those things have gotten. With stock 13B ports it was possible to get up to 400 hp. The 4 port Renesis shouldn't be much different in this regard. With boost comes power. The key as with any RX-8 engine is how you tune it. I guarantee that one day we will see a 300+ hp boosted 4 port Renesis in an automatic RX-8. It's just a matter of when. Most people are designing around the higher power engine at the moment so the 4 port isn't getting much attention. It's not a lost cause. Look at it this way. You're just starting from a lower step on the ladder. It doesn't mean you still can't climb up.

Richard Paul

iTrader: (5)

Say Fred, are the exhaust ports the same on both engines?
If so why isnt the four port a better starting point for a blown engine. Assuming you are starting from a bare engine and not a car.
Seems that with lower comp and without all the butterflys and such. Primary and secondary injectors and whatnot. Seems to me an easier project.
There isnt any reason why you cant get the intake to work as well is there?

rotarygod

The exhaust ports are done the same way but the port timing is a little different. The higher power engine has 10 degrees more exhaust port timing. The static compression ratio is the same 10.0:1 between both engines. The lower power intake manifold works the exact same way that the high power engine's manifold does. The difference is that it doesn't have the auxillary ports and the tuned length of the runners is a little different set for a lower rpm range.

I've been doing alot of thinking about the secondary/auxillary runners coming online and how this should be addressed with forced induction. The logic comes from throttlebody sizing on forced induction engines. On an n/a engine, you want a progressive form of throttlebody to keep intake velocity high. If you don't use a progressive you typically need to use a smaller than optimum single plate so drivability is still good. This only applies to street cars. With forced induction you don't want a progressive throttle system. The RX-8 uses the same principle but with one throttleplate and a valve elsewhere in the system to open the other runners based on rpm. The drive by wire system controls how much throttle opening is needed for this regardless of where your foot is on the accelerator. You could have the pedal floored but the plate is only oipen halfway since that is all that is needed at that spot. For a boosted engine, you want these intake runner valves open as soon as you can once under positive intake pressure. The easier you can get boost into the engine, the faster you build power and the wider your powerband. On the Renesis engines, I would run the vacuum/pressure lines from the actuators directly to the manifold. They open based on pressure anyways. Under no boost they stay closed. At these rpm's and throttle levels, they wouldn't normally be open. Once positive pressure appears they open. This is so much easier than relying on a computer to judge when it is best. Especially when the computer was designed to do it on a nonboosted car. Someone with a turbo needs to try this and let us know how it works. It would take all of 5 minutes to do. The simpler we can make this the better. That would just be one less thing the ecu controls.

Richard Paul

iTrader: (5)

Are those controlled by diaphram or vacuum motors?

rotarygod

Positive air pressure either from the airpump or exhaust backpressure. I don't know how they do it on the RX-8 but these 2 methods were how it was done in the past. Just simple electrically triggered vacuum solenoids inline that opens and closes the air supply to them.

DreRX8

Yeah patience patience--The RX8 will definately have nearly as much aftermarket support as the RX7. With that type of increase in power, I don't think the tranny will have an issue--besides, you can always go to level ten and try and have a heavy duty torque converter built or even a stall kit to get quicker et's.

lastphaseofthis

The AVP( or 5th and 6th ports, AUX ports, yadda yadda) are on controlled by a electric servo motor on the rx8 (6 port version obviously)

...and the VDI, vrad(useless), and 2ndary ports are opened via vacuum/solenoid.

And now you know. :P

RXeligion

ITS ALIVE!!!!!1

Brettus

iTrader: (2)

NGO had an auto ??????

9krpmrx8

iTrader: (46)

Thanks for enlightening us with your 6 year thread bump.

lastphaseofthis

pffft. should i just delete it?

reaperschild

I don't know a whole lot about rotaries yet but, i heard you can modiy the tranny to were it performs just as well if not better than a manual. Plus boosting ghe hp wigh add ons like a supercharger, pullies, cai,exhaust, ecu flash though its stupidly expensive compared to a mustang. These cars are more for drifting amd auto x due to the perfect weight distribution. I love em to death though. The sound of the stock exhaust resembles a yamaha street bike. This is real JDM not like those stupid hondas you see everywhere.

reaperschild

Just do a 20b swap and call it a day, lol

Stray

Just stop.

LifeAfterRx8

iTrader: (17)

Wow... 6 year old thread bump?? Really, is it that hard to tell by the thread's date?
Obviously the OP has found his answer by now as he hasn't signed in for almost 2 years... probably sold the car.