>----------
>From: JT McBride[SMTP:James.McBride@GDEsystems.COM]
>Sent: Thursday, March 27, 1997 9:15 AM
>To: dakota@ait.fredonia.edu
>Subject: Re: MSD stuff....
>
>With all the ignition discussion, I thought I'd note an observation
>from last weekend's tinkering.
>
>The stock ignition coil seems to be extremely sensitive to plug gap.
>
>I'm running the NGK V-Power (FR-4) plugs. They're gapped at the factory,
>but with the V in the electrode, they seem to open up pretty quickly
>(well, in 40K miles, anyway). I didn't have an extra set, so I regapped
>and re-installed my old plugs, and the truck is running just great.
>
>I'm sure with a higher voltage Accel or MSD coil this would not be a
>problem. Anyone else had the same experience?
>
>Jim
>
> ARE YOU A MENACE TO CRIMINALS?
> If householders were required by law to own and know how to use
>revolvers, burglary would cease. It is an act of good citizenship to
>make crime dangerous -- an encouragement of crime to remain defenseless.
> --- from an Iver Johnson revolver ad, circa 1904
A few months ago, when I was trying to stop the excessive pinging on my
Dakota, I disconnected the Jacobs Omni-Pak and reconnected the stock
coil. I had gapped the plugs at 0.050" when I installed the Omni-Pak a
couple of years ago because that is what Jacobs said to do. The normal
gap is 0.035". When I reconnected the stock coil, the pickup ran just
fine. And after a few weeks of driving this way, I bought new plugs and
installed them (the old Autolite cheap copper plugs had 30,000 miles on
them). When I pulled the old plugs out, I measured the gap at 0.060".
So the stock coil seemed to do OK with the gap much bigger than it is
spec'd at. But new plugs with the correct gap did squelch the pinging
considerably.....
------------------------------
Steven Connelly
93 Dakota CC 4x4 V8
stevec@extendsys.com
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