[DMCForum] Re: CO2 E & F Series, Etc.
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[DMCForum] Re: CO2 E & F Series, Etc.



'Tis true. Emissions in Connecticut (when I lived there) were tested
at idle AND at speed. They put my truck on a pair of huge slip-
cylinders (called a dynomometer I think) but I know they put the
analyzer in the pipe and revved it and took the reading.


--- In DMCForum@xxxxxxxxxxxxxxx, "content22207" <brobertson@xxxx>
wrote:
> Bad news Martin: I'm looking at a page from Volvo literature right
> now. CO2 is 2.0% on B27E and B28E, including Sweden & Australia. Is
> 1.7% on B27F through 1976, dropping to 1.0% thereafter and B28F.
I'll
> get the page scanned later today an upload it.
>
> Regarding advanced base ignition time for emissions: When I
mentioned
> this last year, people jumped all over my case. Is one of the
reasons
> I quit the Forum. Now you're saying the same thing! Go figure.
> Domestic auto manufacturers *DEFINITELY* 100% unequivocally
inarguably
> (etc) did this in the late 1970's. I know because I have identical
> engines spanning three years if production. Every year base ignition
> time was scooted up a degree or two, with a corresponding drop in
> performance (screwed up overall ignition advance)
>
> BTW: Not all emissions are tested at idle. I watched the state of
> Virginia do it to my little brother last year on a treadmill at
speed
> for 20 minutes or so.
>
> Volvo alternators are located where DeLo exhaust swings around to
the
> muffler. I do believe Wilhelm specifically asked about "F Series"
> (Volvo) engines... Same comment Re: oil pans.
>
> I never wondered about "why" the series 038 CPR, I just wanted to
> ensure it was proper for my block before spending $75 on another
one
> (remember: I asked you BEFORE I started buying my own factory
> literature). My spare 038 is currently in service on Louie's
otherwise
> stock DeLo engine. I think he's become rather enamored of it. Wonder
> if I'll ever see it again (without popping HIS louvers)? If my
> carbureted swap works out OK, will be a moot point.
>
> Urp?
>
> Bill Robertson
> #5939
>
> >--- In DMCForum@xxxxxxxxxxxxxxx, Martin Gutkowski <martin@xxxx>
wrote:
> > >
> > > - Advanced base ignition time (with correspondingly lighter
> > > counterweight?)
> >
> >
> > Emissions are tested at idle.
> >
> > >
> > >
> > > - Relocated alternator
> >
> > No, thats where Renault put it.
> >
> > >
> > > - Shallower oil pan
> >
> > Nonsense - there are actually spacers on the oil pickup making
the pan
> > approx 1" deeper than the Renault ones.
> >
> > >
> > >
> > > - Much richer fuel mixture (2% CO2)
> >
> > No, the E was set up to 1.5% WE set up to 2% sometimes when the
engine
> > "likes" it. This is within tolerance. 2% co at idle does not
constiture
> > a "much richer" mixture. The mixture adjustment screw has very
little
> > effect higher in the rev range.
> >
> > >
> > > - Series 038 CPR versus Series 066 -- closes much more slowly
(~160
> > > degrees) and exerts slightly less counter pressure. Vacuum
enrichment
> > > is *MUCH* simpler
> >
> > And you never stopped to wonder WHY there are these differences.
> Believe
> > me they didn't do it for the hell of it. Vacuum enrichment on the
> 038 is
> > very slight - something like 0.2bar drop in control pressure -
not even
> > enough to read on a gas analyser at idle! The 066 drops control
> pressure
> > by over 1 bar, and makes a big difference.
> >
> > >
> > >
> > > You may have one of the Renault imports (Z7V) that apparently
were
> > > being marketed out of Ohio in the late 80's. Differences from
Volvo E
> > > series:
> > > - Aluminum fuel distributor with external balancing screws
(don't mess
> > > with them)
> >
> > Only on later ones.
> >
> > >
> > > - Dampener between the CPR and the fuel distributor
> >
> > That was a warrenty item, not on all engines.
> >
> > > Z7V uses a one piece upper air assembly. Many more vacuum
nipples &
> > > ports than Volvo, most of them capped off. CO2 screw access
port is
> > > threaded and plugged with a washer base machine screw.
> >
> > That is actually there on the DeLorean engine, but the upper
casting
> was
> > not drilled out during assembly meangn you have to drill it out.
The
> > Volvos also have this screw
> >
> > > No place to
> > > attach an idle microswitch.
> >
> > That's because it didn't use the idlespeed system!!!
> >
> > Martin



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