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RE: Spark Plugs

To: "J. Le Clainche" <jleclainche@cox.net>, "Spridgets" <spridgets@autox.team.net>
Subject: RE: Spark Plugs
Date: Tue, 11 Jun 2002 08:29:40 -0500
References: <>
Sorry guys I couldn't respond sooner. I'm on the list at work.
The Bosch 2 and 4 tip plugs are not numbered or identified by heat range as 
other Bosch, NGK, etc. are. Moving up or down in heat ranges would be 
largely a matter of trial and error. The Bosch numbers I provided are by 
extrapolation, as I said, by finding a later model car (VW in this case) 
which used the same regular Cu plug as the Sprites and which also listed 
the various other Bosch plugs as options. We'd have to find a car that uses 
B8ES as standard, then find the Bosch equivalent listing, then hope that 
Bosch have developed a Platinum plug for that. Unfortunately, Bosch 
considers the NGK B8ES a "small engine" (lawn mower) type plug and hasn't 
developed a $5.00 platinum version.
         There's always experimentation. But, in my opinion, the B8EV, fine 
wire electrode NGK is the best option over B8ES (standard electrode).  BTW, 
are you indexing your plugs?
         HTH   Peter C

At 07:01 PM 6/10/2002, J. Le Clainche wrote:
>Are there any 2 or 4 tipped Bosh Platinum suitable for a full-race 948 cc
>engine? In your opinion, are there any plugs better than the NGK B8ES for
>that application?
>Jacques Le Clainche

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