[DML] Re: More on idle speeds

["stainlessilusion" <5n-@xxxxxxx>]

Indeed, I'm quite used to working on BBF 390s/427s that idle so slow;
but I just like the idea of adjustability and forgot the engine is
odd-fire and is limited to how low it can go. It just seemed that it
was idling a bit higher then it should. Yes, the screws are seated,
and the butterflies, although still sticking when you release the
accel; are closing all the way. If I hit the accelerator and let off
quickly a few times, then it closes all the way as it should. I've
been playing with distributor/timing adj, and CO-engine still has some
rock and roll at 800. Idles fine when the butterflies stick open at
1500 though...Dani B. #5003




--- In dmcnews@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx> wrote:
> 
> 
> I think Dani may be familiar with larger displacement engines, which
> do indeed idle around 500-600 RPM. A little engine like the PRV really
> struggles that low. But since displacement is so much smaller, you
> probably come out ahead in fuel consumption while idling.
> 
> Note that DMC lowered B28F idle spec from 950 RPM (I remembered it
> incorrectly as 900 in my last post) to 750 RPM. I'm assuming they did
> that for emissions -- no smog pump or EGR, standard on B28F.
> 
> Bill Robertson
> #5939
> 
> >--- In dmcnews@xxxxxxxxxxxxxxx, "Matt Spittle" <supermatty@xxxx> wrote:
> > 
> > 
> > Who wouldn't want their car to idle at 500 RPMS with gas prices
> lately? :)
> > 
> > Matt
> > #1604
> > 
> > 
> > --- In dmcnews@xxxxxxxxxxxxxxx, doctorDHD@xxxx wrote:
> > > 
> > >  
> > >  
> > > Am I missing something?  Why do you want your engine to idle below
> > 700  - 
> > > 800?  I thought 775 was the spec. On a properly operating engine,
> > the  idle speed 
> > > is controlled by the Idle Speed Motor and its ECU not by any  screw.
> >  Correct?
> > >  
> > > D² & 6530
> > > 
> > > Message:  15        
> > > Date: Wed, 13 Apr 2005 01:24:10  -0000
> > > From: "stainlessilusion" <5n-@xxxxxxx>
> > > Subject:  More on idle speeds
> > > 
> > > 
> > > 
> > > I'm hearing of people having too low of an  idle-while I can't get
> mine
> > > anything under 7-8 hundred. How low can a  factory new engine
idle? I
> > > have a new butterfly assembly, the whole thing  not just the
shaft and
> > > flies, Put in O-rings and checked every single vac  line...With the
> > > adjustment screw missing I still get 7-8. Any ideas?  -----Dani B.
> #5003
> > > 
> > >  
> > > 
> > > 
> > > 
> > > [Non-text portions of this message have been removed]








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