I take back my question about higher-octane gasoline. Woke up this
morning realizing that it was a silly suggestion. The higher octane
prevents detonation caused by high compression, has nothing to do with
where the charge is ignited.

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

On 08/21/2012 06:45 PM, Dennis Haynes wrote:
> 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
>>
>