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Re: [bmw] re: colder plugs
I don't think much of them. They may help a car with lean-surge due to the
longer spark length. But they seem to run hot and wear out.
-tc
>
> tc,
> Why do some people swear by the Bosch Platinum Plus Four and others simply
> swear at it?
>
> What's your evaluation of this plug? I read so much bad about it that I
> took them off my E34 540i.
>
> tsp
>
> ----- Original Message -----
> From: <[email protected]>
> To: "bmw group submissions" <[email protected]>
> Cc: <[email protected]>
> Sent: Wednesday, December 17, 2003 5:59 PM
> Subject: [bmw] re: colder plugs
>
>
> > I don't have my books with me now to see if I can find a plug for you.
> >
> > But a "semi suface discharge" spark plug generates a spark that, over part
> > of its length, tracks across the surface of the insulator. This allows a
> > longer spark for a given voltage and helps clean the plug when it is
> > cool. The "semi" means that the spark also spans a gap, which give
> > protection against the sudden and complete fouling that plagues true
> > surface discharge plugs.
> >
> > The Bosch Platinum Plus Four is an example of a SSD plug.
> >
> >
> > -tc
> >
> >
>
>
>
--
Ted Crum
[email protected]
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