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Engine idle speed

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Old Sep 18, 2002 | 08:04 PM
  #1  
MikeW's Avatar
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From: Illinois
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)
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Old Sep 18, 2002 | 11:41 PM
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Hercules's Avatar
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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
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Old Sep 19, 2002 | 08:34 AM
  #3  
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From: Toronto, Canada
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.
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Old Sep 19, 2002 | 12:34 PM
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kwolfman's Avatar
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From: Maryland
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.
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Old Sep 19, 2002 | 05:38 PM
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From: Greater Vancouver Area, BC
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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