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Scopes give you eyes for trouble shooting. A multi-meter is helpful, but only shows numeric values. Scopes display voltage amplitude on a time scale. Newer scope have automatic measurements, showing voltage, frequency and more. There are knobs that adjust amplitude, and time scale, and trigger...

Mopar electronic distributors work on the principle of variable reluctance. The distributor pickup is turns of magnet wire around a magnetic core biased by a magnet. When reluctor tooth approaches pickup nub, magnetic flux is pulled away resulting in a negative voltage. The voltage produced is...

I have developed a direct fire ignition for Mopars. This youtube video is a demo of adjusting mechanical and vacuum advance curves, simply pushing buttons. The user interface is an application written for a $28 RCA Voyager 7" Tablet purchased at my local Walmart.

I have been working on a Coil-On-Plug ignition system for over a year now. I started from scratch, and only have a limited time to work so it has taken a long time. There is a thread here that covers the initial development process. It is long, and not a good read even if you are a technical...

I recently discovered that my battery cables needed help. I was in my low 20's and needed to replace the battery cables around 1980. I took the cables to a farm store and match the length as close as I could with just few inches of excess. I found that is was possible to pull the old starter...

By reading many posts on this form concerning ignition timing, there are many views on the subject. When tuning for performance, some often simplify. An example is to lock the timing advance to 32 degrees. That may work in a limited RPM range, for wide open throttle use, but is not optimal...

I just started working on a coil on plug, or coil near plug ignition system. It will use a modified distributor for timing reference using opto vane sensor and shutter wheel. The sensing method is an improvement compared to a Mopar electronic distributor. I have used an optical system...

See this post about request for shift light method: http://www.forabodiesonly.com/mopar/showthread.php?t=325823 This post is an example of how to program an Arduino nano for use as a shift light driver. Nano board are inexpensive, a year ago $10, now about $5 each. This post does not cover...

I have a project where I need core laminations from an ignition coil. I started with a coil I found in my coil box that was leaking oil from the tower. What was inside is worth sharing with pictures. I made a cut around the top rolled edge to open it. It was nearly full of light oil, that...

This post is about bench testing automotive computers used for engine management. Engine management is not just EFI, but includes ignition system, idle control and many other features. What I am showing is based on a system I first developed in 2003 to replace a very primitive D-Jetronic...

I found good information on ignition systems at McLaren Electronics. Not trying to sell anything for them, but their article with good rules of thumb on ignition systems parameters, is excellent.

When I built my electronic advance ignition, part of the plan was to evaluate ignition coils. I got side tracked when looking at RPM data logs, I discovered that my transmission was starting to slip. So I rebuilt it .... and did not get back to making an ignition coil test setup. There have...

I have read many posts on this forum about fuel gauge problems after replacing the tank fuel sender in our A-Bodies. Some problems are related to mechanical issues of float travel, the instrument voltage regulator, and sender ground. However many have found even after fixing those, the gauge...

I recently purchased a used Mallory Unilite. My motivation is to evaluate what is considered as a quality replacement for the OEM mopar electronic. My picture qualities are less than desired. I started my evaluation by reviewing OEM points distributor specifications found in the FSM for my...

Hi, I recently pulled my ebay skipwhite ready to run distributor off my 66 Barracuda 273 ,to install my home built ignition. It had about five months of service and was working well. I wanted to check the timing for reference, for use in the initial tune settings for my unit. To my...

My 1966 Barracuda has ran well for the past 34 years. Recently I have found it hard to tolerate the gas smell after driving when parked in the garage. It is too early of a car to have evaporative controls. It also requires a few seconds of cranking to fill the carb after sitting for a couple...

Hi, DIM means : Do It Myself. I have been working a couple weeks on developing an electronic advance distributor. This is done by removing the flyweights, and locking the rotor with a setscrew, and using a micro-controller to adjust the timing, based on a timing reference signal. The...

In the late 70's or early 80's I installed a retrofit Borg-Warner ignition on my 66 Barracuda. The unit uses an optical trigger replacing the points, not the standard electronic mopar reluctance setup. It worked well for about 30 years and recently failed. I think the box is fine since I can...

I am thinking about designing a new ignition for my 66 Barracuda. It will not use the distributor to distribute the sparks. The distributor will house the timing pickup sensors for simplicity in installation. The spark pugs will connect directly to the coils. The ignition will have a locked...

Back in the late 70's installed a Borg Warner electron ignition retrofit in my 1966 Barracuda. It recently failed and I need the optical trigger unit that replaces the points. The other part of the unit looks like a 5 pin Mopar ignition box however it uses a single ballast resistor. I think...