Jacobs Ign

[Ted Borck <tborck@domain.elided>]

On Tue, 10 Feb 1998, ihc-digest wrote:


> Date: Tue, 10 Feb 1998 11:09:40 -0700 (MST)
> From: DurangoMan <sbaird@domain.elided>
> Subject: Re: New Member
> 
> 	Greetings!  I've seen your rig in Peterson's 4-Wheel mag, and it
> looks great.  I have a 76 that I am working on, and I have a question for
> you.  I was wondering what your experience with the Jacobs ignition was.
> I just installed the system, followed all the instructions, gapped my
> plugs out .015 over factory, and my Scout runs like shit.  It has less
> power and gets about 1-2 mpg less than it did before the Jacobs.  I called
> them up and asked them about it, and they told me to gap the plugs another
> .005.  But when I told the guy that I had a "1976 International Harvester
> Scout"  he replied "Jeep?", so my confidence level with these guys is a
> little low.  What is your opinion?

I installed Jacobs wires & coil on my Scout II, 345, Prestolite Dist.

What an amazing change for the better for a couple of weeks, then one day 
while driving the engine starting running rough.  UH OH!

Pulled the dist cap off and found that the (old original) rotor had
disintegrated and the dist spark was having to jump from the rotor part
remaining on the dist shaft to the dist cap terminals.  Hmm.... strong 
spark with much much power. 

Replaced the rotor and all was well again.

FYI on page of 106 of Jacobs "guide to optimizing your ignition" is two 
photos of a Scout II engine compartment in relation to heat mapping.

Usual disclaminer, don't work for jacobs.

	*		*		*		*

I have seen several requests for dist info on the prestolite dist.

I bought my Prestolite dist from a boneyard, and went to the local 
Navistar dealer for dist specs.  A friendly shop foreman pulled out some 
old IHC books and provided same.

Ted Borck	tborck@domain.elided