It's already a pushing 60mph in 6 sec. The rx-8 should also have the ultimate in throttle range and throttle subtleness. That's the whole point of an NA engine

Of course everyone want to make it a 5sec montster torque beast with a little boost. Personally I'm thing going supercharged would be a better match.

 

i think i creamed in my pants... and a renises fc, omg! that would be the most awesomest thing in the damn world, maby even better than a 20b fc, the engine reminds me of that cool little walking thing with two legs on robo cop (the one where the little girl hacked into it and madeit saw it was a dog or somthing like that, it's been a while) and our engines are the old junky old robo cop, it wouldn't suprise me if it started making cool hydralic noizes and was like "renises armed" when you started it... haha, im dumb

 

I think I'd agree, it would retain the na drivability. No lag, no fear of creep etc.

 

Is the UIM plastic??? Not sure how that would hold up to boost....

 

well, how soon after the 8 comes out will just the engine be available? And i wonder how much too. I figure....erm.... let's say $6000 for a spankin' renesis? don't forget you need the 8 transmission too... and nobody ever said that the 8's tranny will line up right with the FC, heehee. Someone will chop and bubblegum that thing into place eventually, hehe, hopefully me, but i doubt it. I think i'll just buy an RX-8 if i want that engine, THEN do mods. Until then, ill just continue in saving up for that cosmo engine for my FC.

*edit* you know what's funny? it says im an exhaust leak... how did they find out about my damn exhaust leak? heehee

 

We're assuming it will bolt right on, but I'm not sure if we'll be overspinning the NA or trans or not (1- 2000 more rpms). I'm sure you'll need to get a beefy clutch.

Now if you do bolt a 13b-t renesis on the TII trans, that's 2000 more rpms above.

 

I posted this a while back.

 

Oops, here it is

https://www.rx7club.com/forum/showth...t=renesis+pics

 

The fact that the side exaust port dont have overlap is a bad thing, the way their making the power is because there is more area in the exaust ports, and the intake porting is slightly more agressive than our 6-ports(kinda like a mazdatrix streatport for the 6 port motor) and also they redesigned the manifold so the 6-th ports have their own runners which WAY improves the velocity supercharging affect. if you gave the side ports overlap, it would make more power. The reason they went to side ports is soley for emmisions, with the side effect of they sound really really good. The reason thers 3 exaust pipes comming out is because the center one comes out of the center side plate, and theirs not enough room, so the side ports are smaller their, just like or primarys on our cars. the picture with the 3 exausht tubes looks closer to the production engine, the cutaway one looks more like a one off test engine,.. the ports look hand ground and such

 

I think i heard the transmission is the basically 6-speed that was on the miata internally, and that the special edition miata with the 6 speed was really a durability test for it or something

 

thank you drive through please:

 

talk about upgrades, seems like they have fixed a lot of problems.

 

Any news on a Crate engine program for these things?

 

the third to last photo shows 4 fuel injectors, lined up horizontally. How are these going to work? Someone had said "the three primary injectors", but there are clearly 4. are these to really all be primaries? Or will there be 2 primaries and 2 secondaries in the line of 4?

 

I'm starting to understand how they're getting 25MPG and 270HP now. Makes perfect sense. The exhaust manifold setup it what I'm a bit fuzzy on though.

 

Finally they make the flywheel and counterweight seperate. No more busting out the 3/4" impact and 54mm socket for a flywheel resurface job!

 

Just a thought.... Racing Beat is going to charge a FORTUNE for a header for that thing.

 

Also... if the water pump is electric... what's that pulley doing there? You know. The one, that looks a lot like the water-pump pulley on ours. The one with a water pump attached to the back of it. Yeah, that one.

 

I dont think they are going to be great for big HP #s, do you. Look at all the other new cars, Z, s2000. They are incrediable stock cars but I think the most power anyones gotten out an s2000 was under 400hp. And thats not cheap either. I dont think the RX-8 is going to have a much potential as FC and FD interms of all out power. Really you probally wont be able to run over 10 psi. Im sure the thing has high comp rotors. BUT again the car is going to be an amazing stock car. Just my opinion. Maybe theyll release a forced induction model later like they did with FCs.

 

I'll bet that if the RX-8 does well and every other RENESIS doesn't grenade, they'll bring out a new RX-7 with a single turbo RENESIS. YUM....

 

I hope they do release a forced induction model, or everyone will be fighting to put 13bt or rews into thier rx-8s. =)
less parts for me hee hee

 

i should make a forced model, rotorys and turbos go togather like pee's and cornbread...

 

My my my...must I explain everything, gather around children it's time for Kiyo's RE Basics 101.

First off I must address the one thing that I guess nobody else seems to have correct. OVERLAP IS BAAAAD! Now to explain, overlap between the 2 ports is a terrible thing to have because of the simple fact that you get NOTHING in the low/mid range as far as power and torque go (especially tq). A fine example of this is a P.Port. They produce incredible power on the top end but are **** on the bottom because of the fact that there is so much overlap you don't have enough velocity to do anything down low. The less overlap you have the better the fuel economy and torque (in general overall power is increased), and the better the power on top is. Note the RENESIS produces it's power in the 8500rpm range similar to a P.Port or bridge port. Why is this you might ask (this is where you chime in and ask...go ahead I'll wait...), I'll tell you due to the fact that the exhaust ports open later on in the power stroke there is a longer power stroke and this along with the early opening intake ports eliminates overlap altogether. Note the intake ports on the RENESIS are 30% larger than the 13B DEI (what you have now...well except for those lucky 20B guys) which produces better flow inside, but part of them stay closed to promote velocity which makes torque. Remember when those exhaust sleeves were made what happened??? Low/mid range power was greatly improved, why velocity. Instead of that giant (very badly constructed...sry) hole in the side housing the gases flow quicker producing better torque, and I'm sure if you measured better fuel economy (not that I really care about the economy part . Also it's gonna be interesting to see what they can do on the turbo side (although I like the N/A side because it keeps your power "honest"). I'm sure they'll do something like the twinscroll (I don't know if you guys actually know what that's all about, but that'll be another lesson) from the 13B DEI Turbo. Oh yea on the "side ports solely for emissions" thing, that's far from the truth. It promotes much better velocity since there are now 4 exhaust ports (2 for each housing). This like I said increases low/mid range power, fuel economy, and best of all bad *** sound (I'm sure they won't have that lumpy idle or the chainsaw effect). The extra throttle body increases the volume of air entering the engine and also increases velocity (smaller piping), and I'm sure we all know that velocity is our friend. I'm kinda tired of talking right now, and I'll do more later if you guys want (trust me there's MUCH more I could tell you). But as a final example of the whole velocity/side ports thing...how does a 13B DEI Turbo make so much torque (by the way the Turbo makes 22% MORE torque at 1500rpm than the 13B DEI N/A does at it's peak of 3500rpm...which is 168.36 lb*ft, and NEVER drops below 145 lb*ft from 1500rpm all the way to redline). How is this possible...velocity, that's what turbo's do! They speed up the air that enters and exit the engine, which is why you need bigger piping for a turbo engine, because you have a lot more coming out of the engine (and just like an N/A if you go too big you LOSE power). With the N/A you need smaller piping because you have to keep the air compressed more often to promote velocity to make power. That's why you make lower torque and power in the low/mid range with an N/A that has large piping, but you gain in the high rpm range (same with porting)...class will continue after lunch.

 

So what you saying is:

LET'S ALL HOPE Atkins makes a twin screw roots supercharger that's RPM matched for the renesis engine for massive low end toruqe.

That, and a Haltech adapter that plus directly into the RX-8 harness.

MAZDA - the 4th gen rx-7s need to be 3 rotor NAs that are tuned for torque

 

Something like that. Sorry class is dismissed until further notice (I'm actually eating lunch and I have to go back to class soon...putting an alternator together easy day).