From super speedways to road courses, land speed racing to top fuel dragsters, and of course your traditional hot rod, MSD has provided the components to fire nearly anything in motorsports. Early on, MSD focused squarely on ignition systems with revolutionary products like the multiple sparking CD ignition, timing and rev controls, billet aluminum distributors and the Pro-Mag, an incredible breakthrough in power and endurance.
Today MSD is developing electronics for your entire powertrain. The Atomic EFI systems for the LS engine platform and throttle body are now complemented with a transmission controller.
Our DynaForce Starters and Alternators ensure that your engine cranks over to fire up and the Alternators keep it charged. MSD is poised to deliver components that work and communicate together to provide performance and value.
The feature that most boosted drivers will enoy is the ability to pull timing out during the holeshot — and ramp it back in during the run.
Since many cars have more power than traction capabilities, being able to soften the power at the first section of the run can help reduce the tire shake off the line.
There are also three different rpm limits that can be set in rpm increments; one for the burnout, one for the holeshot and a top end limit for overrev protection. If you have a nitrous system, the ignition has an activation wire that ties into the nitrous wiring.
When the nitrous is activated, the timing can be retarded instantly! State-of-the art technology allows the 7 Plus to produce more power while using less current. The CD circuits combined with an IGBT Coil driver deliver — volts to the primary side of the coil with up to millijoules of energy at any rpm. The Digital-7 Plus provides racers with two smooth rev limits, one for top end overrev protection and another to activate with a clutch or transbrake switch for use on the starting line.
Both are adjustable with rotary dials in rpm increments from 2, — 9, rpm with a maximum of 12, rpm. For nitrous applications or for racers looking for a little more mph, there is a single stage retard circuit that is adjustable up to 9. Next to the rotary dials there is an LED that will verify that the ignition is receiving a trigger signal and will also warn you if there is problem with the supply voltage. The Digital-7 Plus incorporates proficient EMI filter components to keep inputs and signals free from electrical interference.
Combined with the fast microcontroller and a unique input feedback circuit, the ignition is well protected against EMI. The 7AL-2 has been a staple in the drag race community for years. It also features a popular two-step rev control for staging and over rev protection. LEDs lights are used for troubleshooting the unit and a convenient terminal strip makes for easy wiring. It features a host of the most popular drag racing accessories. A built-in Three Step Rev Control provides three different rpm limits that can be used for the burnout, staging and top end overrev protection.
There is also a Multi-Step Retard with four different modules that can be activated at different times. When the engine starts, the timing will automatically go back to its mechanical setting. One last option is an RPM Activated Switch that allows you to activate a solenoid or shift light at an adjustable rpm. When the engine hits the desired rpm the RAS circuit provides a ground to the component to activate it.
Vibration mounts, wires and detailed instructions are supplied. This ignition works on modified street machines, trucks or street rods. The powerful multiple sparks of the MSD 6A ensures complete combustion. Unlike the stock-type inductive ignition systems, MSD ignitions incorporate capacitive discharge technology. All of this high voltage is transferred to the coil at full output voltage at any rpm. The MSD ignition also produces a series of full power sparks through mid range rpm.
This series of sparks ensures complete combustion of the fuel mixture resulting in greater power and performance. Like all of the MSD 6 Series Ignitions, the 6A will work with virtually any vehicle as long as it has a volt electrical system. It can be triggered using breaker points, a magnetic pick-up or the output of an electronic amplifier.
If you are a weekend warrior at the strip, the MSD 6AL ignition is a good starter box for saving that high dollar engine. The combination of powerful sparks with the safety of a Soft Touch Rev Control is what makes the 6AL a popular ignition box for entry level drag racers. MSD developed the Soft Touch rev control to prevent overrev damage to the motor in the event of a missed shift or parts failure. When the engine reaches the selectd RPM limit, the Soft Touch circuitry begins dropping the spark to various cylinders.
On the next cycle, these plugs are fired again to prevent fuel from loading up in the cylinder. The result is a smooth and accurate RPM limiting action without backfires or blowbacks through the carburetor. The Society of Automotive Engineers suggests the maximum resistance should be 12, ohms-per-foot. However, some OEMs have recommended different maximum resistances.
Begin typing your search term above and press enter to search. Press ESC to cancel. Ben Davis April 4, How do you troubleshoot MSD ignition? Does MSD ignition increase horsepower? Does MSD Ignition make a difference? Are MSD ignition boxes worth it? Are MSD Distributors good? What does a MSD ignition box do?
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