Re: [bmw] re: colder plugs

["T S Perez" <tspst1300@xxxxxxxxxxxxxxxxxx>]

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: <tedcrum@domain.elided>
To: "bmw group submissions" <bmw@domain.elided>
Cc: <MDrainville@domain.elided>
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
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