RotorGeek

Good luck man .

Aoshi Shinomori

So you're saying that since he's not selling anything, we should insult his attempts at awesome? He is doing this:
1) to make his car fast
2) to show everyone RX8 owner that they too can make their car fast

So what if he's not selling it, porting isn't something only Ito can do, he might be very good at it, but that doesn't mean others can't do it. This is very similar to what Hymee and Richard are doing in that they are working to advance performance of this awesome car. Make you own opinions, but insulting someone's work because they're not selling it to you is chilidish.
More good luck Ito.

rev-2-9k

The more information we have on performance the better. The fact that Judge Ito wants to share it with us is awesome. I wish him the best of luck and hope he can break into the 12's.

Ito, have you looked at any suspension mods to stiffen up the rear end and keep your wheel hop down? Charles Hill says his RB sway bar helps alot, that is what I have so.....

davefzr

Nah.. it just gets to the heart of what the old thread was about and why it got so heated..

but to the point of being old.. i'll shutup.

Mr. Port & Polish

I want to talk about reliability with nitrous for a second. This is the reason I'm a bit excited about my ported renesis engine on my Rx8. I have found, through test and tunning with my kid's 91 6 port streetport Rx7 on nitrous that a 150 hp increase while seems a bit extreme could add a serious punch to a street driven Rx7 or Rx8 for pennies on the dollar in comparison to other bolt ons, and maintain reliability.

The 91 Rx7 engine was built in May 2004. Some dyno runs were made all motor, engine made 165rwhp and 139tq. Rx7 is basically stock with a ported engine and Racing Beat complete exhaust. Stock ecu, afm and stock injectors. At this point I checked the compression, and the numbers were at 125psi over all compression from the combined 3 chambers, equally on both rotor housings. I wanted to see if a high dosage of continuous abuse of nitrous, would create some early loss of compression and corner seal spring failure.
I installed a nitrous kit. I started with a 100 hp shot on got the power up to 200.3whp and 172tq. At this point the car is driven seriously hard every single day(10 sets of rear tires have been changed from daily burnouts,2 broken trannies,one broken clutch,2 broken diff and 1 broken axle) The car is tested at our local racetrack with nitrous and pulled 14 second elapse times. About a month later, back to the dyno. I increased the nitrous hp levels to 150 and manage to pull 239 and later 261whp and 217tq. Take the car back to the racetrack and run in the 13.8 with street tires and a rookie driver. On the way home from the race track, I was driving the car for about 15 minutes on and off, with continuous nitrous for over 140 miles per hour and really trying to break the engine. What would take me about 45 minutes to get home, was done in 20 minutes. I heard absolutely no detonation and the car was feeling awesome.

The next day I re-check compression and my numbers were 127psi equally on both rotor housings.
I feel a 150 hp shot well tuned with the proper ingnition timing will make the Rx8 seriously fast for pennies on the dollar and not effect reliability. Thats why I'm a bit excited about a ported renesis on nitrous.

If fellow members for the third time want to get on my case, for what ever reason, I will just about walk away from this forum. I understand many members are interested in my research and that is why I am back. So I ask some members to just relax and let me do my job.

bureau13

So far I think I've seen more people jumping down other people's throats because they're afraid they'll get on your case, than people actually giving you a hard time! Whatever...this is pretty exciting. I've never been a huge fan of nitrous, but if what you've found holds true with the Renesis...it is pretty damn exciting.

jds

smrx8

iTrader: (1)

acosta motorsports does porting for the Renesis engine.there located in nj

canaryrx8

iTrader: (3)

more power to you dude, maybe a couple of years down the road when all this stuff is figured out I'll be able to afford some of it...lol

Red Devil

Avoid the naysayers and keep it coiming, I say. I don't like the idea of nitrous personally, but I'm very much looking forward to reading the upcoming article.

brillo

I don't know much about nitrous, how many shots can you get out of a bottle is your doing say 100 shot? Would it be possible to deisgn a sort of nitrous system with a "super charger" effect? by that I mean it kicks in at the low end for some torque every time you accelerate and backs off after a certain rpm basically boosting the low end of the car?

I don't know if that kinda systemw ould be considered a "shot" or not, but if every time you accelerated you engine got feed a 25-50 shot briefly, how long would would your bottle last? Ho much is it to fill a bottle anyways?

Red Devil

Charles, how much does it cost to refill your tanks?

Vrimmick

Ito does share lots of technical knowledge with us and I am certain both Richard and Hymee might benefit from it as well as all of us enthusiasts who like to learn more about rotary engines. It doesn't matter to me whether he wants to sell his ideas or not. What's important is that it is a learning experience for all of us and it usually boosts interesting discussions. Amen.

BOOSTD 7

LIAR! You're so full of it!

Haha, just kidding bro. Good luck, and let me know how things go. And if you ever need help trying to break some motors, give me a call. I seem to have no problem popping motors.

Ophitoxaemia

its a good thing to have people experimenting with the renesis. it takes large amounts of money, time and effort that i would never be able to do, and so i am grateful for anyone that is working on it and generous enough to share whatever about it they wish.

and special thanks for some relief from the endless "which wing/rims/body kit" will make my car "phat and wicked".

james

Razz1

Ok MR. Port and Polish.

Here's my question: You said you started with 242RWP.

I've only seen dyno's run between 170 and 180RWHP.

So what the hell do you have that starts HP at 242?

You don't even have a modified ECU.

Please answer this question as many people here would die just to get 242 RWHP.

Ajax

He bridge ported the tertiary ports.
That is all.

PoLaK

iTrader: (1)

Am i this said "forum member and moderator" ?

Vrimmick

He blew air on the car while dynoig it.

PoLaK

iTrader: (1)

For your sake i hope that was Sarcasam.

zoom44

i thought so. that's why i said :

a couple of pages ago. :p

Vrimmick

Sarcasm? No. No air - no power. BMW tuner Dinan showed different power outputs depending on the amount of air being blown on the car while dynoing. They used a 470hp Dinan's M5 (415 expected at the wheels). It put out only 334hp whp on a dyno without blowing air and closed hood. Open the hood and turn on a small shop fan blowing air at 10mph and the number goes up to 371hp at wheels. Still not there. Start a $7000 electric fan that blasts air at 75mph and you'll see big 411 whp. So basically without a wind tunnel or an efficient blower there is no way to measure real hp on a dyno. And even if you take the engine out, the computer won't be fooled and without blowing air it wont show you its full potential. I bet you $50 that is the case with RX8. I wonder if anybody ever tried it.

BaronVonBigmeat

Heh, I heard about that. I read a story somewhere about a new dyno that's been developed, apparently the power created by the car's spinning wheels is used to power a hydraulic pump, which in turn spins a huge fan. So apparently it isn't just BMW that observes airflow. I think it was at a Mustang website but I can't remember where, I just remember that there's only two of them in the US right now.

zoom44

you are correct but in this case this person did indeed bridgeport his renesis. shoving air at it would not account for a +/- 70 whp increase in this particular situation.

Icemastr

I am quite good at popping motors too.

Vrimmick

I know he did. 70 hp is way too much even for an air storm. Proper porting will do the trick though well.... hopefully. It sounds like porting is the best tuning method to get significant hp increase and it maybe hell of a good idea for FI applications, provided that side seal problem is a real issue here.