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MSD AL6 on a 4.0

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Old Mar 19, 2010 | 08:56 AM
  #1  
gintaras's Avatar
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From: Schererville, IN
Year: 1997
Model: Cherokee
Engine: 4.0
Default MSD AL6 on a 4.0

Wrong thread title, should be MSD-6A

Has anyone here done this? I would bet my right arm that at least one of you has. I have had this AL6 sitting here for a couple of years now and I would like to use it, even if it does nothing, I still want to put it on because my late dad gave it to me and maybe it will magically solve my cold off-idle stumbling..

Any writeups? I have new plugs and wires, but they are 7mm wires, will they suffice until I can find some bigger ones? And I assume gap the plugs to .045, maybe even .055?

Last edited by gintaras; Mar 19, 2010 at 09:17 AM.
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Old Mar 29, 2010 | 02:36 PM
  #2  
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From: Schererville, IN
Year: 1997
Model: Cherokee
Engine: 4.0
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Well, guess I should update my own thread.. even know I am pulling it from the dead..

I installed the MSD 6A box over the weekend, along with a new MSD coil and Accel 8mm wires, and I gapped my plugs to .045

First impression is that there was an improvement to throttle response, seems to have a bit more torque all around, and a smoother idle..

I mainly wanted a boost in MPG, so far I have not seen an improvement in MPG but I haven't even gone through a 1/4 tank since the install, so only time will tell.

I probably wouldnt have bought the unit if I had to, but it was given to me and just sitting around so I figure'd I'd give it a try.
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Old Mar 29, 2010 | 02:37 PM
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From: Sutton, New Hampshire
Year: 1995
Model: Cherokee
Engine: 4.0L
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How difficult was the install? Would a small writeup be possible?
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Old Mar 29, 2010 | 02:42 PM
  #4  
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From: Schererville, IN
Year: 1997
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Engine: 4.0
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it's really straightforward following the wiring diagram that comes with it. there are only 6 wires.. Hot, GND, and then you cut your coil wire and use the wiring diagram to do the rest.
Check out page 2 on this document > http://www.msdignition.com/instructi...pdf?terms=8873
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Old Mar 29, 2010 | 02:49 PM
  #5  
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From: Sutton, New Hampshire
Year: 1995
Model: Cherokee
Engine: 4.0L
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Good to know!
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