I can't blame just those plugs for major failures but it can add up. But
when holding the heads in my hand I see that the extended reach plugs just
don't look right.

Dennis

-----Original Message-----
From: Rocket J Squirrel [mailto:camping.elliott@gmail.com]
Sent: Tuesday, August 21, 2012 8:35 PM
To: Dennis Haynes
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: New-Spark-Plugcebo Effect

"Let the piston meltdowns and broken rings begin."

Even I, a registered Vanagon ninnyhammer, would not want to melt my
pistons!*

Who's seen 1.9s suffer this kind of damage from using the NGK BP6ET plugs?

Chris "tencentlife" Corkin likes them and he seems to garner more respect
than most. Seems he'd know whether they were damaging to our engines.

But hizzoner Dennis Haynes is no slouch either. Both guys know more about
these engines than I ever hope--or care--to know. So when one speaks, I
listen.

--
Jack "Rocket j Squirrel" Elliott
1984 Westfalia, auto trans,
Bend, Ore.

On 08/21/2012 04:28 PM, Dennis Haynes wrote:
> Those are simply the wrong spark plugs. The standard plug is a W7C. The
"D"
> is a longer reach plug used in the inline 4s. The projected tip brings
> the flame front closer to the piston and can increase the propensity
> for knock and ping. This can also increase the production of NOx
> especially once ping begins. Unfortunately in the Water boxer Ping is
> not heard until it is getting really bad. Let the piston meltdowns and
> broken rings begin. Yes it may feel better especially after replacing
> worn plugs. If you want to use quad electrode plugs go for the Bosch
> 4477 ( my favorite). Although it is listed as a replacement for the
> W7D's due to its more universal design the actual reach is closer to
> the "C" series and the platinum tip being enclosed eliminates the
> glowing red part that can induce ping. BTW back in the old days if you
went to the dealer to get spark plugs you would get W7CS.
> W=14mm thread with gasket
> 7=Heat range Higher is hotter.
> C=length of thread and reach, (d=extended tip) Next C =copper,
> S=Silver If an "X" = extended gap such as .060.
>
> The new Bosch numbering system is not as easy to decipher.
>
> Dennis

> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On
> Behalf Of Rocket J Squirrel
> Sent: Tuesday, August 21, 2012 4:24 PM
> To: vanagon@GERRY.VANAGON.COM
> Subject: New-Spark-Plugcebo Effect
>
> Just swapped out my older Bosch W7DC0 pluggies for new NGK BP6ET.
>