MSD or High Output Coil?
#1
Senior Member
Thread Starter
MSD or High Output Coil?
has anyone installed an MSD and/or a high output coil and if so what is your experience with it?
I have made this mod on vehicles I owned in the past with minor improvements, but I am not sure of anyone has experienced reliability issues (or other issues) when installing these components on a jeep.
I have made this mod on vehicles I owned in the past with minor improvements, but I am not sure of anyone has experienced reliability issues (or other issues) when installing these components on a jeep.
#3
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Join Date: Jul 2012
Location: Andover, VT
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Year: 1999
Model: Cherokee (XJ)
Engine: 4.0 L
I have a MSD. The only reason I bought it is because it was part of Kolak's ignition kit. Was it worth the money? Probably not. The only benefit is I can gap the plugs a little larger which isn't really noticeable.
#4
No, I don't lick fish.
MSD's coil is a 40,000 volt unit. Accel's is a 42,000 volt unit. D.U.I's Screamin' Demon coil is a 45,000 volt unit. If you run any of these, you should upgrade the wires to 9-11mm, go with a QUALITY cap and rotor, and gap your plugs to .040-.045"
After all that, you're probably not going to see any real improvement unless you're running a stroker with mid-grade fuel or above.
That being said, I don't see why you'd experience any NEGATIVE effects as far as reliability goes with upgrading to a hotter spark. These engines are 8.8:1 compression ratio and not at all fragile.
After all that, you're probably not going to see any real improvement unless you're running a stroker with mid-grade fuel or above.
That being said, I don't see why you'd experience any NEGATIVE effects as far as reliability goes with upgrading to a hotter spark. These engines are 8.8:1 compression ratio and not at all fragile.
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