[TenTec] spark plugs

[d.e.warnick at comcast.net]

It's not all that hard to build a spark gap. Just refer to any ARRL manual. Two 90-degree points separated by .050" will do the trick. There is a lot of copper and brass plate available out there at a very reasonable cost and it won't foul in the weather
Dave
WA3MKB

-------------- Original message -------------- 
From: "Dr. Gerald N. Johnson" <geraldj at storm.weather.net> 

> On Tue, 2008-04-15 at 08:14 -0500, Paul DeWitte K9OT wrote: 
> > Yes automotive plugs have resistors in them to suppress the tvi. However some 
> small engine plugs also have resistors in them. They will have an R in the 
> model. I use Champions so maybe some other brands do not have this ID. 
> > 
> > Paul 
> The only sure check is an ohmmeter. Some lines of Champion plugs have 
> air gaps in the plug body to increase the coil voltage for use in old 
> engines burning oil. Most vintage tractor owners now despise Champion 
> plugs as finding them fouling easily and not cleaning at all. As 
> production shifts off short quality of many plugs has fallen. The raw 
> material and production quality control is not good. 
> 
> 73, Jerry, K0CQ 
> 
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