Due to neglecting my plug changing duties, I got about 100,000 miles out of
one set.  No problems at all, though the center electrode was worn down to a
nubbin.

Karl Wolz

----- Original Message -----
From: "Jeffrey R" <Oxroad@AOL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Thursday, October 05, 2000 12:47 PM
Subject: Gapping Bosch Super W7DTC spark plugs?

> I'm installing a set of Bosch Super W7DTC spark plugs in my 83.5
Watercooled
> 1.9 liter. The spark plugs come pre-gapped at 0,8 mm. This is the spark
plug
> with three contacts (?) that surround and serve the electrote. Where a
normal
> spark plug has only one--the W7DTC has three. (I'm not sure what you call
> this contact--but it's that normal little tab that you gap between it and
the
> electrode on the spark plug)
>
> Anyway the W7DTC are set at the factory and I'm assuming should be
installed
> as is at 0,8mm-- bentley calls for a gap of 0,7 + 0,1 mm --so this seems
to
> fall in that range. (How exactly you would re-gap the W7DTC I'm not sure.
It
> looks complicated and certainly couldn't be done with a flat feeler
guage?)
>
> Anybody had good experiences with these plugs?
>
> Jeff
> 83.5 Westy
> temporarily in NV