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Old 04-03-2010, 01:06 PM   #1
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MSD Plug Wires worth it?

I'm doing a tune up on my 97 TJ and just got the Champion copper plugs and decided I ought to replace plug wires too. (75k miles and no idea when/if the previous owner changed them).

So I was wondering if the MSD 8.5mm Super Conductor plug wires like this: MSD Ignition 32239 - MSD Spark Plug Wires for 91-98 Jeep® Wrangler YJ, TJ & Cherokee XJ with 6 Cylinder - Quadratec are worth the expense. I've had MSD ignition systems in other vehicles and really liked them, but didn't know if they are worth it in my Jeep.

(These wires can be found for a little cheaper locally it looks like.)

So, is MSD worth it, or should I go with Mopar or other wires?

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Old 04-03-2010, 03:42 PM   #2
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i up graded my 97 TJs wire but i went with summits 8.2mm wires when i did my tune up i used all mopar parts cap,rotor button,and plugs but the summit wires were cheaper they work great

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Old 06-26-2012, 11:53 AM   #3
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did you end up going 8.5mm?
I was just looking at this set amazon and wondering the same thing, is it worth the extra expense. I am also wondering if that set needs the tower connectors the description says it might
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Old 06-26-2012, 11:58 AM   #4
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For a stock 4.0 I don't think it would be worth it. Just use the OE and spend that money on an upgrade you'll really use.
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Old 06-26-2012, 07:36 PM   #5
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From a Ford Lightning person, that still runs strong under 15 pounds of boost. Yes, the MSD wires are the stuff!

If you are still having issues, look deeper.

Mike W
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Old 06-26-2012, 07:41 PM   #6
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My stock wires are doing fine since 2006. Unless you are mud racing your Jeep, once a week. Again, look elsewhere for the issue. Don't take off a great pair of wires!

If you do, save them,

Mike W
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Old 06-26-2012, 07:42 PM   #7
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And sell them to me!
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Old 06-26-2012, 09:05 PM   #8
Knows a couple things...

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MSD makes good ignition systems but their plug wires are no more desireable than the OE factory ignition wires are. In fact, I'd rather have the OE wiring because of its truly superb quality... which MSD has too but for more $$$.

The thing about spark plug wires that is so misleading is all the gizmo ignition wire manufacturing companies push their wiring's lower resistance. Lower resistance sounds good, right? Wrong. Resistance is actually added to the wiring on purpose, at greater expense, to eliminate spark noise that not only creates static in AM and CB radios, but it can interfere with the engine computer.

Not to mention that the added resistance has a negligible effect on the voltage that gets to the spark plugs. There is so little current (amperes) passing through the spark plug wires that the added resistance doesn't drop a significant amount of voltage. What reaches the spark plug gap is still way more than what is needed to easily fire the spark plug. For those who understand Ohm's Law, you'll get what I'm saying. E=IR is the Ohm's Law thing.

So, really, there is no reason to go for so-called "high performance" igition wiring because there really is no performance gain/reason to go further than the long-lasting high quality OE wiring. Reallly.
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Old 06-26-2012, 10:14 PM   #9
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Quote:
Originally Posted by Jerry Bransford View Post
MSD makes good ignition systems but their plug wires are no more desireable than the OE factory ignition wires are. In fact, I'd rather have the OE wiring because of its truly superb quality... which MSD has too but for more $$$.

The thing about spark plug wires that is so misleading is all the gizmo ignition wire manufacturing companies push their wiring's lower resistance. Lower resistance sounds good, right? Wrong. Resistance is actually added to the wiring on purpose, at greater expense, to eliminate spark noise that not only creates static in AM and CB radios, but it can interfere with the engine computer.

Not to mention that the added resistance has a negligible effect on the voltage that gets to the spark plugs. There is so little current (amperes) passing through the spark plug wires that the added resistance doesn't drop a significant amount of voltage. What reaches the spark plug gap is still way more than what is needed to easily fire the spark plug. For those who understand Ohm's Law, you'll get what I'm saying. E=IR is the Ohm's Law thing.

So, really, there is no reason to go for so-called "high performance" igition wiring because there really is no performance gain/reason to go further than the long-lasting high quality OE wiring. Reallly.

Obviously you have been there and done this!

Mike W
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Old 06-26-2012, 10:16 PM   #10
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My offer still stands.

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