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] To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/