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-   -   Engine idle speed (https://www.rx8club.com/rx-8-discussion-3/engine-idle-speed-683/)

MikeW Sep 18, 2002 08:04 PM

Engine idle speed
 
Anyone know how low of an engine speed that wankel engines idle at?
My mom has a Dodge Intrepid that can idle as low as 500 rpms. (in gear, automatic)

Hercules Sep 18, 2002 11:41 PM

I'd imagine it's around that area....

Does it make a difference anyway ? :) I don't know what purpose it serves to know... but educate me :)

Grimace Sep 19, 2002 08:34 AM

My old 7 never idled below 900 RPM. Towards the end of its life the thermowax (spelling?) sensor went wonky, and it would idle upto 2000, and even more fun, do a rythmic surge between 1000-1500 RPM.
Common problem on 2nd gens, I don't think this was an issue in later years.
Rotaries idle at about the same point as regular piston engines do.

kwolfman Sep 19, 2002 12:34 PM

My first gen with 5-speed idled at 750 RPM. I believe the spec for automatic was 650 RPM. My first gen developed a problem with the AC on, it would idle at 500 RPM, always treatening to stall.

wakeech Sep 19, 2002 05:38 PM

i think with the much lower overlap and higher thermal efficiency (longer power stroke and higher compression than many early wankels) the RENESIS will have a very low and lean idle, which would provide that 40% better emissions and sky-high (well, relatively speaking!! the car makes 255 bhp all motor!!) city-mpg...


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