Re: [Chrysler300] Distributor rebuild - where?

[Marshall Larson <yelof@xxxx>]

If the dwell changes when the vacuum advance moves the breaker plate, the
plate must be mounted excenteric to the shaft. Are you saying that is
the case? If it is, I didn't know that.

Marshall.

On Mon, 16 Dec 2002 19:45:06 -0800 "Don Verity" <d.verity@xxxx>
writes:
> Dwell is the time in degrees that the coil is building up energy to 
> fire the
> spark plugs. More is better, to an extent. To much will leave you 
> with a
> small point gap and they will burn rapidly, to little and you will 
> not get
> enough coil saturation time and will wear the rubbing block on the 
> points
> faster. The reason for duals is to get more dwell without the bad 
> effects of
> a small point gap. Just before the first set closes, the second 
> starts to
> open, so you get the combined dwell of both sets. Each runs at 28-32
> degrees. With both running you get almost 40. I usually change the 
> points in
> my G every couple of years. Back in the "old days" when all cars had 
> points
> and were daily drivers, tune-ups were a twice a year thing. Changing 
> your
> point gap will change the timing, as will point wear.Worn bushings 
> on an
> electronic distributor won't effect dwell. If it's bad enough 
> though, the
> reluctor will contact the pick up coil with bad results! Worn 
> bushings in a
> point set up will definitely effect dwell because the shaft is 
> moving around
> changing the point gap. On most single point systems, the vacuum 
> advance
> will change the dwell also. Sometimes by 4-5 degrees. The dual 
> systems
> breaker plate rides on a bearing and is much more accurate, usually 
> within a
> degree.
> 300ly,
> Don
> ----- Original Message -----
> From: Owen & Jo Grigg <ram300@xxxx>
> To: <chrysler300@xxxxxxxxxxxxxxx>; John Hertog 
> <crossram@xxxx>
> Sent: Monday, December 16, 2002 1:15 PM
> Subject: Re: [Chrysler300] Distributor rebuild - where?
> 
> 
> > Hi John & all
> >
> > I am running a Pertronix unit on my 300C, doesn't seem to be any
> noticeable
> > difference in idle or performance. Haven't checked the dwell, just
> installed
> > the Pertronix and put a timing light on the crank. I thought the 
> main
> > reason for correct dwell angle was to take the heat away from the
> > points....stop them burning out? Does it also effect ignition 
> timing? Can
> > you compensate by turning, advancing/retarding the distributor? 
> Could it
> > just be flogged distributor bushes causing problems on some cars 
> with
> > Pertronix systems?
> > As you can see I'm a bit of a novice when it comes to 
> distributors.....so
> go
> > easy on me ok.
> > What are the symptons I should be looking for??Don't much like 
> changing
> > points, but if it makes more power.......
> >
> > Owen
> >
> >
> > ----- Original Message -----
> > From: John Hertog <crossram@xxxx>
> > To: John L. Chesnutt <chesnutt@xxxx>;
> <chrysler300@xxxxxxxxxxxxxxx>;
> > Vath, Michael J. <mjvath@xxxx>
> > Sent: Tuesday, December 17, 2002 6:56 AM
> > Subject: [Chrysler300] Distributor rebuild - where?
> >
> >
> > > Hi Mike,
> > >
> > > The actual bushing is available from NAPA . I don't recommend 
> the
> > > Pertronix - dwell is unacceptable, and cars I installed 
> Pertronix on had
> > to
> > > be reconverted to points. As far as rebuilder, you might want to 
> contact
> > Don
> > > Verity - d.verity@xxxx ; he has a Sun distributor machine, 
> and can
> set
> > up
> > > the distributor properly as per spec once he has rebuilt it. 
> Don's
> rebuilt
> > a
> > > few for me.
> > >
> > > John
> > >
> > >
> > >
> > > To send a message to this group, send an email to:
> > > Chrysler300@xxxxxxxxxxxxxxx
> > >
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> > >
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> > >
> >
> >
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> 
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