Well, didn't someone say a corvette makes max hp at 5900 rpm? Why does a corvette redline higher than 5900?

Delhi is right. The new rotary needs to redline higher than any other production car, and that means it has to stay around the 9000 rpm area. I don't care what it's doing at 9000 rpm, it could be shitting candy, but it better get there and be doing something there.

 

what kind of candy? how about donuts? I think that an engine should only redline 500 rpms more, and if you need it to redline higher down the line due to power adders then you can increase it, but other than that, i see no point in having a much higher redline than the peak hp, unless it really did **** out candy or donuts.

 

Yes, I said that and you're right, it does redline higher than that, but there's another way of looking at it.
This new engine is supposed to make more torque across the power band, which means it also should make more horsepower across the power band. If peak power is lower than 8500, then I doubt you'll see it redline at 9000. If it makes peak power at 7000, the redline will likely be 7500. We really just need to see where the power band is.

Think about your transmission too. What kind of transmission must we have to sustain a 9000 RPM redline (and higher actually because like others, I tend to bounce mine off the fuel cut every so often)? The automatic is limited by the transmission. There are plenty of cars that have more horsepower in an automatic, however, I don't know how many automatic transmissions rev to 9000 RPM. All I'm trying to get at is 9000+ RPM is awesome, but it's hard on the transmission as well as the bearings in the motor.

I love the fact that my car revs that high, but would I care if I could get a rotary that revved as easily to 7k as this one does to 9 and had more power across the entire line? No.

And I can understand saving a shift, but how often do you do rev the engine above 8500 to save a shift? First gear, that'd be like 37-38 mph (I honestly don't remember what speed I'm going in first at the top of the gear. I'm too busy trying to get a perfect shift to second) Second 64-67. Third 85-92.... On a track maybe, but daily driven? eek!

 

more torque and hp across the line would be the best goal for this new engine, while still remaining decent on gas, we are damned by the every rising fuel costs

 

mazda's own people said they have 4 mayor points for the next rotary:

1- driving feel
2-power
3-economy
4- revs

thats directly from the mazda people, so I think the red line would remain the same, if it is lowered it will not be by a lot

another thing is that with the narrower rotors the ecentric shaft is shortter so there is going to be less flex as long as the rotors weight the same or less than the 13b ones

 

racing beat has already shown that there is more power to be had in the renesis by raising the REV limit and then PROPERLY TUNING IT. remember we were all saying "there's no reason to raise the limit on the 8 because power is falling off before there anyway"? well Racing Beat killed that assumption. i hope Mazda does it again- gives us a 9k redline with power starting to fall off at 8200 so that we can play with the tuning , grab another 800rpm and 20 hp. after all if they(mazda) dont leave something on the table- where is the fun in that for the enthusiast?

 

very true, they do raise the redline to 9300 rpm, and even lower the fan temps, it is good that mazda lets us play around

 

Completely agree with you. This thread has inspired a new savings account for me. When this is released, I'll either buy a whole new car, or just as you said Chetrickerman: "Buy engine and Tranny".

I'm so grateful we have shops out here in British Columbia that specialize in the 20b Rotary engine and the like. Not to mention, our our knowledgeable club mechanics.

I'm dieing to hear the roar of this new Rotary Engine.

 

WHAT? you have specialty shops? jerk, im jealous, i dont know of any really good shops around here, jsut auto repair, nothing like tuning or dyno

 

That's cause you live in a state that specializes in Cheese...heh

 

You can pretty much guarantee that we won't see anywhere remotely close to 300 rwhp.

 

no ****, and my name is chet = chetter cheese. HAHA, wisco sucks, but im glad it hasnt snowed yet, knock on wood

 

I hate to agree...but I doubt it will put out 300whp...

Still would be nice tho...

In other news...I think Chet was tortured as a boy in elementary school...I don't know why...call it a hunch...heh

 

i was, seriously, then as i got older and bigger, i kicked all their asses, wow, i cant believe you knew that

 

Winding Road has a bit on the 16X:


So if they are correct we'll see what 278hp at the crank? Not even close to enough.

 

More like the low 260's. It will be fine if the car it goes in is light enough.

 

That sounds about where it should be. It should really fall somewhere between 270-280 hp and around 190-200 ft lbs of torque. That's easily more than enough to make most people happy and more than we could ever ask from a street legal rotary engine. If you want more you have 2 options, yet another even larger engine or forced induction.

 

280 hp and 190 lbft of torque, in a lightter rx-8 and in a 2600 lbs Kabura

 

And my sources say its 23% more hp and 20% more torque

 

very good numbers. The key to this is that this engine is as light and as compact.

I say this engine will be lighter fully dressed than a 13BMSP. However the reliability is a real question mark this time. Time will tell, the 13BMSP, architectural wise, is a very proven design and in theory very reliable (proven by quite a few on this board). I'd worry about hot spots on the aluminum plates, since they might not have looked into re-designing the coolant passages, possibly due to budget again, or other reasons.

I really hope they've made changes to more than just the housings and direct injection. I am curious if they've made changes to things like rotor weight, rotor dish geometry, cooling, eccentric shaft, etc.
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this engine is being developed with more time and $$$ than the renesis

it will be as light or lightter, one part may be that it is a 4 port engine acording to all the pics I have seeing

enlarge the pic

http://news.windingroad.com/car-buyi...s-16x-renesis/

 

Well, RC, that is the intermediate plate you are seeing....... the Renesis has 1 intake port there, the plate that is removed, is supposed to have 2.

I am sure you know that tho. Looking at the 1st 16X picture released, it clearly has two circular holes cut into the end plates.
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Tyffany

 

you are right my mistake

That intermidiate port is huge!!

 

I hope we will get more details on this engine. Seems like its been all given away

1600cc, 20% power increase.. And while we all long to see the cut away model...... it really tells us nothing about dimensions! I hope they release info on the dimensions, and additional changes that they've done.
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they will at the show