The Right Spark Plugs

[quk@isham-research.demon.co.uk (Phil Payne)]

In message <25c0118d.35181226@aol.com> MHLIGGINS writes:

> Based on the comments by Ned Ritchie re: platinum Bosch plugs, as well as
> the recommendation by TWO Audi mechanics in Nashville, I have used only Bosch
> copper plugs in both of my '87 5K quats.  I've thought about the tri-
> electrodes, but don't consider them worth the extra cost.  The Bosch web site
> says the 3-e plugs were not designed to improve power, but to increase plug
> life.  I figure they'd know.

Agrees with my observations on the MB engine.  The three electrodes just seem 
to share out the wear.

Anyone care to guess how old Roger Galvin's triples were when we removed them?
 
0.7mm gap burnt out to 2.1mm.

-- 
 Phil Payne
 UK Audi [ur-]quattro Owners Club