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
>