bosch #4202

[patrick.bureau at gmail.com (Patrick Bureau)]

the main reason why you need copper plugs on a older vw or mercedes is that
the ignition system uses the internal resistance of the plug to create a
proper spark, I know this make little sence (not my say here, but from 2VW
mechanics I know) and I have test platniums and they do foul up faster and
do not provide proper power/burn.

my 2 cents worth.


On 2/17/06, Cory Langford <Cory_Langford@bcit.ca> wrote:
>
> I tried platinum once in a roc and the are not a wise choice.  for some
> reason the ignition system fouls these plugs very quickly.
>
> Also found that the bosch plugs that have the 4 grounds for the electrodes
> also seem to cause problems.
>
> The nice cheap copper ones still work the best in old rocs - even turbo
> rocs :)
>
>
> Cory Langford
> '86 Roc turbo,
> '78 Roc turbo - Daily driver project,
> '65 Ghia Coupe
> 95 Eurovan, etc, etc... :)
>
>
>
>
> Gordon Forbess <gforbess@attglobal.net>
> Sent by: scirocco-l-bounces+cory_langford=bcit.ca@scirocco.org
> Feb 17, 2006 09:52 AM
>
> To
> Neptuno <neptunonc@yahoo.com>
> cc
> Scirocco-L <scirocco-l@scirocco.org>
> Subject
> Re: bosch #4202
>
>
>
>
>
>
> On Fri, 17 Feb 2006 09:14:19 -0800 (PST), Neptuno
> <neptunonc@yahoo.com> wrote:
>
> >Does anyone know if the above spark plug fit the Scirocco? A person is
> giving away 4 new ones and if they fit I will pick them up.
>
> It looks as if that's a platinum plug.  Even if it physically fits,
> conventional wisdom (among the Mercedes gurus, anyway) is that you
> don't use platinum plugs in anything older than 1992.  Poor idle is
> the main complaint when used with older ignitions.  I'm not sure what
> the collective opinion and experience is re: VWs.. but I'm sure you'll
> get it.
>
> Gordon
> 75 Mk I/Drake 1.9
> http://pws.prserv.net/gforbess/scirocco/scirocco.htm
>
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--
Patrick Bureau - patrick.bureau@gmail.com