Ignition Systems - Control Boxes

MSD 6M-2L Marine Ignition with Rev Limiter

Highlights:
• Designed for performance marine applications
• Weathertight connector with multi-ribbed seal for reliable connection unaffected by water, oil, gas, and most other boating chemicals
• Completely potted circuitry with polyurethane for weather-proof protection
• Triggered by magnetic pickup (distributor or crank trigger), breaker points distributor, or amplifier
• Tested and certified to meet or exceed USCG standards

The MSD 6M-2L has the same mounting footprint as the original unit, so it will easily fit into existing brackets. The proven Soft-Touch rev limiting action is set using our marine rpm modules so you’ll be able to set a rev limit exactly where your engine needs it.

The 6M-2L is built to deal with constant high rpm and load conditions unique to marine applications. To protect the 6M-2L’s electrical circuitry from direct water contact, the entire unit is potted with red polyurethane. This material prevents the electrical components from coming into contact with water or other chemicals that could cause damage. Weathertight connectors with multi-ribbed seals are unaffected by water, oil, gasoline and most other chemicals associated with boats.

The 6M-2L can be triggered by either a magnetic pickup (distributor or crank trigger), amplifier or by a breaker point distributor. The cable harness has the proper connector so you can plug the 6M-2L directly into one of MSD’s Pro-Billet Marine Distributors.

Operating Specifications:
• Spark Energy: 105-115 mJ per spark
• Primary Voltage: 460-480 volts
• Secondary Voltage: 45,000 volts (tested with Blaster Coil)
• Spark Series Duration: 20° crankshaft rotation
• RPM Range: 15,000 RPM with 14.4 volts
• Voltage Required: 12-18 volts (negative ground)
• Current Draw: 1 amp per 1000 RPM
• Size: 8" Length x 3.5" Width x 2.25" Height

MSD 6M-3L Marine Ignition with Digital Rev Limiter

Highlights:
• Large, easy to read LED display
• Shift interrupt feature eases shifting
• MSD’s smoothest rev limiter yet, protecting parts and saving your engine
• Records highest RPM the engine turned for last 20 minutes of run time
• Easy setup of features with three rotary dials on the face of the unit
• Built-in Start Retard adjustable in 0⁰, 10⁰ or 20⁰ increments for quick, easy starts and extend starter life
• LED display shows rev limit, highest RMP turned, cylinder select, start retard, battery voltage and can be set to tach mode
• Full delivery of spark energy and easy starting down to 6 volts battery supply
• Highly efficient, low current draw for extended battery life
• Fully potted housing to withstand demanding marine conditions
• Sealed connector for clean wiring and trouble-free operation
• Works on 4, 6 and 8 cylinder engines
• Reverse polarity and overheat protection provide ultimate reliability
• Can be triggered by magnetic pickup, amplifier, and points inputs

MSD has raised the bar and added an all-new UL listed marine ignition box to their lineup. The 6M-3L is a fully sealed unit with a single wiring connector makeing installation neat and easy.

Three rotary dials and an LED display simplfy setting the cylinder select, start retard and rev limiter. Plug-in rev limiter chips and hard to read dials are a thing of the past. For diagnostic purposes, the LED display can also be set to a live tach mode on V8’s and even display battery voltage with the turn of a knob.

The 6M-3L is a capacitive discharge ignition that multi-sparks from idle to 3,000 RPM providing a clean idle and quick throttle response. Above 3,000, capacitive discharge sparks will run clean through 12,000 RPM . Boasting more features and higher spark energy than its predecessor, the 6M-3L is the performance upgrade your boat needs!

Rubber Vibration Mounts For MSD 6 Boxes

Where strong vibration forces can be transmitted through the hull to the MSD unit MSD recommends the use of vibration mounts Each package comes with four vibration mounts and mounting hardware