Distributorless Igntion vs. MSD

[joetiii]

I've got an Electromotive distributorless ignition in my car and I've read in the manual that the voltage is extremely high which requires changing the plugwires every year. It also says this type ignition needs closer gaps on the plugs and will tend to foul them out sooner. My pea brain doesn't make sense of this. I have heard that an MSD provides more spark than even the EM. Yet when I ran an MSD in my Mopar, I never had issues w plug wires or running closer gapped plugs. Please explain.

[ALXinNZ]

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[stlrj]

Originally Posted by joetiii

I've got an Electromotive distributorless ignition in my car and I've read in the manual that the voltage is extremely high which requires changing the plugwires every year. It also says this type ignition needs closer gaps on the plugs and will tend to foul them out sooner. My pea brain doesn't make sense of this. I have heard that an MSD provides more spark. Yet when I ran an MSD in my Mopar, I never had issues w plug wires or running closer gapped plugs. Please explain.

Those statements are a good reason that you should never believe everything you read.

[RoninLB]

maybe the info in the manual relates to race motor demand.

the voltage applied depend on what's needed.

A race track engine w/high compression at 10+k rpm needs more power for ignition than my engine.

just because a CD box or coil says 40,000 volts doesn't mean that's what will be used.