Every parts house I've talked to about them (+4s) says to stay away from
them unless you have a newish engine.

Apparently they foul quite easily.

Karl Wolz
----- Original Message -----
From: "Brian Honan" <bhonan@HOTMAIL.COM>
To: <vanagon@GERRY.VANAGON.COM>
Sent: Sunday, November 26, 2000 4:02 PM
Subject: Re: 3-prong Spark plugs?

> >Ron,
> >I notice you didn't mention the Bosch Platinum Quad plug below....
> >I also seem to remember you don't sell them on you web site...
> >what is the reason for this?
> >
> >I seem to recall that some list members have reported that the Bosch Tri
> >Tip
> >Platinum plus caused the head to run hotter..
>
> I'm not Ron nor, a pro nor did I keep up with this thread, however those
> plugs I was told burnt out my coil starter.
>
>
> Brian
> 87 GL
>
> . and some speculation that
> >this could cause the head gaskets to deteriorate quicker... and that the
> >Platinum Quad ran cooler....
> >
> >Can you enlighten us?
> >
> >Thanks,,
> >Bill Davidson
> >
> >----- Original Message -----
> >From: "The Bus Depot" <ron@NETCARRIER.COM>
> >To: <vanagon@GERRY.VANAGON.COM>
> >Sent: Friday, November 24, 2000 8:12 AM
> >Subject: Re: 3-prong Spark plugs?
> >
> >
> > > Some correction/clarification is in order here.
> > >
> > > First of all, the part numbers for the correct tri-electrode Bosch
plugs
> >for
> > > a Vanagon are W7DTC or WR7DTC - not W7TDC as erroneously mentioned in
> >the
> > > below post. (Note letter reversal.)  The only difference between the
W7
> >and
> > > the WR7 is that the latter adds a resistor to prevent radio
interference
> > > from your engine electrical system.  That is the one that we stock,
for
> > > $3.75 each.  (If purchased as part of a $50+ order, you get an
> >additional
> >5%
> > > listmember discount on request.)  Incidentally, Joel is correct that
> >these
> > > are for all watercooled Vanagons (except diesel of course) - not just
> >'85.
> > >
> > > If you want the stock, single-electrode Bosch plugs (basically
> >equivalent
> >to
> > > the W7CC0 that came factory-installed), that's the W7CC, and they run
> >$1.25
> > > each. These are the plugs that we include with our tune-up kits, and
are
> > > what the vast majority of Vanagon owners buy.
> > >
> > > There is also a Platinum Plug, the 4233, for $2.49 each, but for my
> >money
> >if
> > > I were going to upgrade over  the stock plugs I'd jump right to the
> > > tri-electrode WR7DTC's.
> > >
> > > - Ron Salmon
> > >   The Bus Depot, Inc.
> > >   www.busdepot.com
> > >   (215) 234-VWVW
> > >
> > >
> > > > the Bosch W7CC0 and Beru 14L-7CU/14L-7C are
> > > > the recommended ones in the owners manuals.  However
> > > > the W7 is the ticket ... that's the Bosch heat range, so
> > > > you're ok with those triple-prong plugs. i've been running them
> > > > for about five years and love 'em.
> > > >
> > > > > After speaking with Bus Boys, I was informed that the 3-prongers
> > > > > are for '85 only? Is this right?
> > > > Bullshit. W7 are for any bus that needs that heat range, and that's
> > > > any watercooled bus.  i KNOW the 86-91's require the W7 range, and i
> > > > think the 83-85 watercools do as well.
> > > >
> > > > my advice: replace it with more Bosch W7TDC. that's the only plug i
> > > > buy nowadays. i can't prove it, but my overall mpg has gone up 1.0
mpg
> > > > since i put them in.
> > >
>
>
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