MSD Street fire ignition coil and distributor cap and rotor

General Discussion
1

If I am replacing my ignition coil as well as cap and rotor as MSD, do I need am ignition box?

2

Huh?? What engine is this on and what are you doing to it?

Replacing the distributor cap and rotor to an MSD brand and replacing a stock coil with an MSD coil. Nope, neither require an MSD electronic ignition unless you are changing the points or pickup to an MSD pickup.

3

MSD?
Maryland School for the Deaf?
Merck Sharp and Dohme?
Motor Sports Developments?
Marine Sanitation Device?
Moscow Summer Time?
Mass Service Disruption?

1 Like
4

Multiple Spark Discharge

5

aha… thanks

6

Unless you do all out racing and live in the very high RPMs territory you don’t even need any MSD components.

7

MSD is a brand name for aftermarket ignition systems and parts.

8

If you are swapping from conventional ignition to MSD, sometimes there’s an issue w/the ballast resistor in the coil primary circuit. The instructions should explain what you need to do.