Date:         Wed, 12 Nov 2003 20:29:55 -0600
Reply-To:     tom ring <taring@TARING.ORG>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         tom ring <taring@TARING.ORG>
Organization: Tippen Ringware
Subject:      Re: Cold Starting
In-Reply-To:  <3FB28502.4030706@fyi.net>
Content-type: text/plain; charset=ISO-8859-1

But the most important thing is the gap.

So, if that is correct, it should make very little difference to the coil if
there is resistance wire/rotor or not.  RF emitted (radio noise) may change due
to reflected power (bouncing back from the plug) being absorbed more or not,
but that should do nothing to the coil, since the voltage is much lower than
the initial pulse.

tom

On 12 Nov 2003 at 14:07, Eric Zeno wrote:

> I'll be glad to,    but I'll tell you that most of your
> eyes will be glazing over soon.
>    Put a DC current thru any coil, and you get a magnetic
> field.  Remove the power the field collapses, causing
> a reverse voltage into the source. If this source was
> removed by a switch the voltage will jump the gap
> at the switch and crate an arc.  This is a basics of the
> ignition system.  The VW coil is set for a given gap,
> and  several other  standard things like wire resistance,
> etc. If for any reason this should  change (with Bosch Platinum
> plugs) you run the risk of damaging the coil by over heating.
> This is exactly what I have found, as the coils still work,
> but several internal shorts would not let them charge
> enough to jump the plug gap any more.
>                Got it.  WE will have a test on this tomorrow...
>                              LOL   Eric
>
>
>
> Jack wrote:
>
> >I was hoping Eric would provide a bit more information about HOW the spark
> >plugs could be responsible for the coil's demise.  Has anyone else observed
> >this phenomena?
> >
> >//Jack
> >
> >
> >On 12 Nov 2003, at 12:50, Mike Collum wrote:
> >
> >
> >
> >>I may as well put in my 2¢ worth, too.
> >>
> >>Both my '84 and '85 are running with Bosch Platinum Plus 4 plugs (2
> >>years worth) and the only things I've noticed are easier starts,
> >>smoother running, and a little better gas mileage.
> >>
> >>Mike
> >>Houlton, Maine
> >>
> >>
> >>
> >>>  Interesting information.  I have been running Bosch Platinum
> >>>tipped plugs for many years in my stock '85 vanagon L, with good
> >>>results.  Maybe my coil is unusual?  They seemed to work ok in
> >>>my old Horizon, now sold, and in the daily driver Neon also.....
> >>>
> >>>
> >>>
> >>>>Dave,
> >>>>    Bad new.  Your coil is about to die. This is because of the
> >>>>plugs you put in.  I've seen this a dozen times.  Those plugs
> >>>>have killed more coils than I've ever seen any time in my life.
> >>>>Replace the plugs with stock, and replace the coil.
> >>>>    Now, you don't beleive me, right?  When its dead and you have
> >>>>tryed a dozen other things like so many other pros, that I had
> >>>>to strighten out, don't say I didn't tell you so....
> >>>>
> >>>>           Eric                   86-VW4x4
> >>>>           vw4x4@fyi.net          86-SS Syncro
> >>>>           Pittsburgh, PA USA     1936-Chrysler
> >>>>                                 92-Jetta GWC
> >>>>          www.fyi.net/~vw4x4/vw4x4.htm
> >>>>
> >>>>
> >
> >
> >
> >
>


------
Tom Ring K0TAR, ex-WA2PHW  EN34hx
85 Westphalia GL Albert
96 Jetta GL The Intimidator
taring@taring.org

"It is better to go into a turn slow, and come out fast, than to go into a turn fast
and come out dead." Stirling Moss