mark.bitterlich(at)navy.m
Guest
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 Posted: Tue Feb 20, 2007 1:08 pm Post subject: Spark Plug wiring conversion |
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Just one more comment if I may on here.
In re-reading my comments written to Jan, it might have appeared that I
was in some way denigrating Dennis's spark plug and spark plug wire
conversion kit for the M-14 engine. That would be a misunderstanding on
any readers part, because I strongly endorse the change, (have purchased
it myself) and believe that any small amount of noise floor increase
that probably will result, can be easily be taken care of with small
changes to squelch settings in the radio. Many users of Dennis's system
have reported no increase in radio noise at all! Only about 4 that I
have talked to have noticed a change. Of course, this kind of analysis
is not really scientific as I mentioned. To really check this issue
out, it would be necessary to set up test equipment and measure the
sensitivity and noise floor of the installed radio with the antenna
connected and the engine not running, and then again with the engine
running. All other possible sources of noise would also have to be
totally removed to make the test accurate. This is clearly not an easy
thing to do, and the equipment to do it properly costs thousands. That
said, the very best (traditional) way to shield RF type noise is with a
Faraday Shield. This approach consists of solid metal barriers, and
closely woven metal stranding that surrounds any RF noise source. The
original Russian system used this approach, and I believe that without
question it was a superior system for containing ignition noise. It
also was, (and is) the biggest pain in the tail to work on,
troubleshoot, repair, replace, etc., that can be imagined. It also
mandated the use of very expensive spark plugs.
So, my only point was (and is) that there may occasionally be a very
small trade-off between RF noise and the installation of the Taylor
spark plug wires used in the kit. To me, the juice is definitely worth
the squeeze.
Mark Bitterlich
N50YK
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