[AJD] Champion Plugs - was Re: JD 70 running rough

[Ronald L. Cook]

John,
	All very good information.  Duane's, Frank's, and yours.  You are quite 
right about getting the engines up to temperature and RPM with a load. 
Everything works better and probably will last longer.  I would like to 
have a dynamometer so I could work my tractor's engines.  Those old 
tractors no longer have any field work to do.
	But......my old Pratt & Whitney radial gets worked hard on the sprayer 
and all of sudden the Champions spark plugs that I had always used, 
REM40E, decided to no longer work properly.  Several friends of mine in 
the business had similar results.  Something has gone haywire at 
Champion.  When this first happened to me, around 1998, I took the new 
Champions out of the airplane and put the old ones back in as they did 
run okay but were getting hard starting.  I then called Omaha Airplane 
Supply where I had purchased the plugs and told them of my problem.  The 
salesman said the iridium would solve any problems, just cost an 
additional $700 and to send back the massive electrode plugs and they 
would send them back to Champion for testing.  If anything was found out 
of sorts, I would get credit from Champion.  I am still waiting to hear 
from Champion.

Ron Cook
Salix, IA

John wrote:
>   One hears a lot of antecdotal evidence of Champion Plug bashing lol of 
> which I may be guilty as Ive also had better luck with Autolite. Duane 
> Larson and Frank have more detailed scientific info on the subject of 
> quality and design and manufacture of the porcelain/ceramic and its porosity 
> which contributes to the deposition of fouling deposits on spark plug 
> insulators. REGARDLESS of plug brands, if we ran our tractors at 180 degrees 
> and under a load at full RPM versus the prolonged slow idle and no load and 
> cool operating temperautes at parades, plugs would last muchhhhhhhhh longer. 
> Use shutters etc to get them up to temperature,,,,avoid long idle 
> periods,,,,,run the hotetst available NON resistor plug,,,,,,,,,dont run the 
> carbs any richer then necessary,,,,,,,,,,,keep them well tuned and use wire 
> core (not carbon core suppressor wires) plug wire,,,,,and run then loaded 
> where possible is my best advice to lessen premature plug fouling.  Ol John 
> T in Indiana