Jacobs Ignition Upgrade

W

walter m. drew

New member
Nov 1, 1998
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I'll bite. What is the Jacobs Ignition Upgrade? Might it help my
pinging and knocking at lower elevation?

Walter 78 Royale 455 Santa Fe at 7,000 feet.
 
Larry
I installed the Jacobs Ignition team for my GMC, Had to return cable to
hook up to energy pack. It had a resistor in it and would not start.
After this upgrade and a new set of Champon copper plugs the engine
started 100% faster and runs much tighter. The engine is more responsive
and the gas milage is up by 2 mpg. I am a happy camper. A very easy and
productive upgrade. Getting ready for the 30 mile trip to Myrtle Beach,
see ya there.

Jim Hall
77PB in Pawleys Island
 
Walter

An after market ignition module, that has some rather interesting features.
Among them are an increased ignition energy over that of an HEI, and the a
means of zapping the cylinder again. I have seen how this thing works, on 1
GMC, and the effects are noticeable, increased mileage, smoother idle, burns
cleaner. A well tuned 455 is a smooth running engine by itself, but with
the Jacobs system in place it's really smooth.

It also has an "anti-theft" feature built in. Start the engine, and if you
don't flip a switch within 30 seconds, the engine shuts down. If you
forget, you can reset the system, by flipping the switch before you restart,
otherwise, good luck as it will not run. Having forgotten to flip the
switch, I can attest to the fact that it works rather well. This feature
can be turned off for the forgetful, and those who don't need it.

Dave

- -----Original Message-----
From: Walter M. Drew
To: gmcmotorhome
Date: Monday, February 15, 1999 06:36 PM
Subject: Re: GMC: Jacobs Ignition Upgrade

>I'll bite. What is the Jacobs Ignition Upgrade? Might it help my
>pinging and knocking at lower elevation?
>
>Walter 78 Royale 455 Santa Fe at 7,000 feet.
>
 
Jim:

What components did you install?

Paul Bartz

From: Jim Hall [mailto:ozone3]
Sent: Monday, February 15, 1999 8:14 PM
Subject: GMC: Jacobs Ignition Upgrade

Larry

I installed the Jacobs Ignition team for my GMC, Had to return cable to hook
up to energy pack. It had a resistor in it and would not start. After this
upgrade and a new set of Champon copper plugs the engine started 100% faster
and runs much tighter. The engine is more responsive and the gas milage is
up by 2 mpg. I am a happy camper. A very easy and productive upgrade.
Getting ready for the 30 mile trip to Myrtle Beach, see ya there.
 
Larry, I found their web page and learned all about the Jacobs
products. What did you order and why?

Walter 78 Royale
 
Where is the Jacobs website?
Richard Waters, 1976 Palm Beach

> In a message dated 2/17/99 11:55:58 PM Central Standard Time, wdrew

>
> products. What did you order and why?
>
> Walter 78 Royale >>
>
> Walter, I ordered the whole deal....coil, cap, module, wires.........Am
> looking forward to getting this stuff. I was at Autozone yesterday and bought
> a set of plugs, Jacobs recommends copper core, and the counter guy said that
> "Dr. Jacobs" recommends .......yada, yada...." So it seems that the counter
> guy was a big fan. He had read Jacob's books. Seems Jacobs was in on the
> invention of the heart pacemaker, and took that technology to engines. Also,
> this system is so smart, it senses, in a nanosecond whether a plug is getting
> enough fire, and if not, it sends another shot, all in the same firing event.
> I have gotten some good replies which you all saw..I will keep the old stuff
> and use it as my Baja spares. When I told that to the Jacobs phone tech, he
> laughed. It seems they feel that spares are unneccessay. Also they guarantee a
> double digit percentage increase in mileage. On of our netters got an extra 2
> mpg. They also have stuff for the ONan in their catalog. I'll let everyone
> know how it goes. Supposedly it is about a 20 minute installation + the time
> it takes to do the plugs (gap at no more than .060). Larry Nelson, PN 75,
> springfield, MO
 
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