[DMCForum] Re: Andrei's Broken Passenger Balancing Screw

["content22207" <brobertson@xxxxxxxxxxxx>]

Won't work like that. If that screw isn't open *NO* air is entering
passenger side of the engine. No wonder your CO2 was up! You were
dumping unburned fuel out passenger cylinders.

Try this: close bypass screw (disabling manual circuit) and simply
crack open the throttle plates like an old fashioned carburetor.
Engine won't be "balanced", but let's face it -- CIS through common
intake port (cold start tube) isn't balanced either.

I cleaned up the IDLE.TXT file. Original was written two years ago as
an eMail attachment to someone specific. Wasn't really suitable for
general consumption. Plus I've learned A LOT more about PRV's since
then. Hopefully Martin will see references to piston heights and
distributor differences.

Bill Robertson
#5939

>--- In DMCForum@xxxxxxxxxxxxxxx, "Andrei Cular" <acular@xxxx> wrote:
> I think that is where my problem is.  The screw for the pass side was
> cranked down by the PO or mechanic and the top broke off...  So I
have no
> way to adjust that bank other than the idle screw.  My idle is
hovers around
> 850.
> 
> 
> 
> Andrei
> 
> 
> 
> ----- Original Message ----- 
> From: "content22207" <brobertson@xxxx>
> To: <DMCForum@xxxxxxxxxxxxxxx>
> Sent: Tuesday, December 23, 2003 9:10 PM
> Subject: [DMCForum] Re: ATTN: Andrei (Part III)
> 
> 
> > Are you running off brass manifold screws? If so, try opening inlet
> > screw a bit more. Don't forget to set balancing screws PROPERLY (see
> > IDLE.TXT under Files section).
> >
> > Old Volvo PRV's idle at 900 RPM BTW. May have difficulty manually
> > tuning to 750.
> >
> > Bill
> >
> > >--- In DMCForum@xxxxxxxxxxxxxxx, "Andrei Cular" <acular@xxxx> wrote:
> > > I did try adjusting the screw but when I lean it out anymore it
> > starts to
> > > run really ruff.  Also I have no idea when this gas sniffer was last
> > > calibrated so for all I know it might be running less than 5%
> > already.  My
> > > home made O2 sensor says that I am just on the rich side of ideal.
> > >
> > >
> > > Andrei
> > >
> > >
> > > ----- Original Message ----- 
> > > From: "content22207" <brobertson@xxxx>
> > > To: <DMCForum@xxxxxxxxxxxxxxx>
> > > Sent: Tuesday, December 23, 2003 10:15 AM
> > > Subject: [DMCForum] Re: ATTN: Andrei (Part II)
> > >
> > >
> > > > Thought about this after "send" button was already pressed (but
> > that
> > > > message was long enough anyway):
> > > >
> > > > Nowhere did you mention turning CO2 screw to lean fuel mixture
> > back to
> > > > 5%. Why don't you try that before giving up on non-Lambda
> > experiment.
> > > >
> > > > This isn't rocket science: Without Lamda the upper fuel
> > distributor
> > > > chambers are going to flex to a maximum size and stay there.
> > That's
> > > > it. That's the whole point -- to remove constant fluctuation of
> > lower
> > > > chambers by frequency valve. All you have to do then is adjust
> > > > metering piston movement (with CO2 screw) to correspond to maximum
> > > > upper chamber volume.
> > > >
> > > > Hopefully your family members are NOT lurking. My sister does, so
> > now
> > > > knows all my sexual predilections.
> > > >
> > > > Andrei the ENGINEER...
> > > >
> > > > Bill Robertson
> > > > #5939
> > > >
> > > > >--- In DMCForum@xxxxxxxxxxxxxxx, "Andrei Cular" <acular@xxxx>
> > wrote:
> > > > > > Don't know how old you are, but I am old enough to remember
> > what
> > > > > > Detroit (and Kenosha!) went through in the 1970's:
> > > > >
> > > > >  Just turned 25, so I don't remember what they went through.
> > > > However being
> > > > > a car nut my whole life, helped my uncle rebuild an AMX when I
> > was
> > > > 5,  I am
> > > > > familiar with the history.
> > > > >
> > > > > When a manufacture has something that works they are very slow
> > to
> > > > change it.
> > > > > To get the full investment out of a design they usually will
> > just start
> > > > > bolting things on and making small tweaks till it is no longer
> > > > possible to
> > > > > get anymore from the engine.  Look at Porsche it tool them
> > nearly 50
> > > > years
> > > > > to switch from air cooled to water cooling in the 911.
> > > > >
> > > > > > I am honest to goodness curious about your test results.
> > Please post
> > > > > > to Forum (am away from eMail until Sunday). This isn't a "he
> > said/he
> > > > > > said" issue -- I really think you can come up with some hard
> > data that
> > > > > > *SOME* owners will find useful (surely I am not the *ONLY*
> > person who
> > > > > > wants to return to basics).
> > > > >
> > > > > I'll keep you updated.
> > > > >
> > > > > > Andrei the scientist...
> > > > > I'm and engineer not a scientist.  Sorry had to just incase any
> > family
> > > > > members are monitoring this group.
> > > > >
> > > > >
> > > > > Andrei
> > > >
> > > >
> > > >
> > > >
> > > > Yahoo! Groups Links
> > > >
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> > > >
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> > > >
> > > >
> >
> >
> >
> >
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> >
> >

---

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