but then your HC's go through the roof (won't pass any emissions tests on the limiter, by a LOOONG shot...)
these days, don't they simply use a combination of the two, under computer control to keep the revs from going too high??

 

All rev limiters are built into the ECU software these days. I get the impression that ignition cut is nicer on the engine than fuel cut too, that's why the rev limiter is ignition but over boosting which is much more dangerous has a fuel cut because it may ignite without a spark.

BTW, I've heard of heaps of stories of rotaries over-revving and living to tell the tale it's one of their strong points. Years ago there was a poll of people on the rx-7 list who had grabbed the wrong gear and not one blew an engine. Try that on the E36 M3 list! I've seen 9500rpm on my motor before without any drama.

-pete

 

Are there any EPA emissions tests/requirements at the redline? I don't know much about the requirements for emissions, but I always thought the requirements were only for cruising and idle conditions. Enlighten me!

 

HA HA HA!!! lordy i HOPE not!!!
i'm just being my friendly, green, and know-it-ally self...

oh, rpm_pwr, what do you drive?? a 7?? or an E36 M3???

 

I have a TII with stock internals, full exhaust, intake and fuel-cut defender, if you want power, you shift at 7500...redline is 7000. I have maxed out my tach several times(8000+rpms) and I mean MAXED it out(2nd gens also had rev limiters) and I hit my limiter...8600rpms...these engines can take it...but I do think they'd need to put a scatter-shield on the tranny in order for it to go any higher.

Also, they said 0-62 is 6.3...I imagine 0-60 will be more like 6.0-6.1 seconds

 

If the posted redline line is 9000 revs, I hope the buzzer comes on at 9250.
A modern rev limiter would probably cut the fuel to one rotor @ 9500, and if that didn't do the trick to bring the revs down, the other rotor could drop out @ 9750, and finally the spark cut out at 10000.

If you dumped that air/fuel mix into a hot catalytic converter, not a good thing.

 

It's way easier than that... think about it... your throttle input is just an electronic link into the ECU ANYWAY, so all it's gotta do is back you off.... disconnect your right foot... scale it anyway, until your revs are inside the limit... then you don't have to worry about HC's or going too lean etc...

 

The key to "Fuel Cut" is the CUT part... there is no fuel being introduced, so there is no air and fuel to mix, therefore nothing to detonate.

You'd run into problems with Fuel Reduction, but not Fuel Cut.

 

What's that bull about the RX-7 being about straightline performance and nothing else at the end of the article??? Did anyone else notice that...what's wrong with that statement?

 

I didn't even need to read that article to know that those editors were odviously smoking something It really ticks me off when people don't know sh*t about the history of the cars they are testing.

 

I agree.

 

Agreed, There are people within mazda that are making a very hard push to remind all the employees about the history of Mazda, the rotary and racing.

This is shown in their commercial on SpeedVision/Channel (whatever) .. http://www.rotaryscene.com/movies/MazdaAd.mpeg
Their next target is educating the media on what Mazda is all about, and how they found themselves again.

 

Note that the British gallon is bigger than the gallons here in the U.S. Yes.....I know...it doesn't make much sense...
The mess us up by giving us the english system of measurement, then they muck it all up again....

1 British gallon = 1.20095 US Gallons