Yes, all the in line 4/Audi 5 engines used the "D" reach plugs.

-----Original Message-----
From: Rocket J Squirrel [mailto:camping.elliott@gmail.com]
Sent: Tuesday, August 21, 2012 9:33 PM
To: Dennis Haynes
Cc: vanagon@GERRY.VANAGON.COM
Subject: Re: New-Spark-Plugcebo Effect

I have to assume that the VW engineers picked plugs with a certain reach as
appropriate for the engine (1.9). Were longer reach plugs, such as the "D"
ones, available at the time?

W/r/t the risk of increased ping caused by plugs firing closer to the top of
the pistons, couldn't one compensate by using higher-octane fuel?

Not that I'm a great big fan of buying even more expensive gasoline, but I
do like the peppiness these plugs provide.

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

On 08/21/2012 05:49 PM, Dennis Haynes wrote:
> 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
>