Subject: RE: Spark plugs -- Bosch rep blowing smoke?
Author: Chuck Sherman
Date: Feb 2, 2005, 2:33 PM
Post ID: 1718322829
I've heard the same re: plats; I'm runnin' +4's in my Dnepr and a stock
ignition set. The points do burn, but this I chalked up to poor russian
electrics.
The issue us not load; rather it is longevity of the point set which is
supposedly the issue. I'm not an EE, but I think it has to do with the
summation of resistance; I was under the impression that resistor plugs
and caps increased the resistance of the ignition circuit so as to
suppress radio interference. This, in turn, increases the overall
ignition system resistance which leads to arcing across the point gap.
Eventually the arcing cooks the points.
This is all supposition on my part; I'm a thermodynamic/mechanical kinda
guy. Heat flow/fluid flow I know; me and a Simpson 260 are a dangerous
combo.
William F. Dudley Jr. wrote:
"too much load on . . . ignition system" ? This sounds like the Bosch rep is blowing smoke. I can't see how anything but the coil/condensor impedance and the dwell angle would affect the load on the ignition system. In other words, the electrode material is not going to measurably affect the ignition primary circuit, hence the ignition current drain. Bill Dudley Electrical Engineer 72 Ambassador owner
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