MSD ?
Senior Member
Joined: Mar 2012
Posts: 974
Likes: 14
From: Racine, WI
Year: 1997
Model: Cherokee
Engine: 4.0
Depends. If you're just slapping an MSD coil in with no other changes.... waste of time and money.
I'm using iridium plugs (less conductive than copper) gapped to 0.050". A stock coil would not have provided enough oompf to jump that gap reliably, so I'm using an MSD coil.
If we're talking about the MSD control module, I can't imagine that ever being worth the money in an XJ unless you're building some kind of super duper XJ. Even then it may easily still not be worth it.
I'm using iridium plugs (less conductive than copper) gapped to 0.050". A stock coil would not have provided enough oompf to jump that gap reliably, so I'm using an MSD coil.
If we're talking about the MSD control module, I can't imagine that ever being worth the money in an XJ unless you're building some kind of super duper XJ. Even then it may easily still not be worth it.
Last edited by mschi772; Mar 19, 2016 at 08:47 AM.
::CF Administrator::
Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
X2
When I bought my stroker motor, it had an MSD ignition in it. It's sitting in my garage in a box. Running a stock coil and plugs. Runs great.
If the stock setup is good enough for a stroker, then I wouldn't waste time or money on a name.
Depends. If you're just slapping an MSD coil in with no other changes.... waste of time and money.
I'm using iridium plugs (less conductive than copper) gapped to 0.050". A stock coil would not have provided enough oompf to jump that gap reliably, so I'm using an MSD coil.
If we're talking about the MSD control module, I can't imagine that ever being worth the money in an XJ unless you're building some kind of super duper XJ. Even then it may easily still not be worth it.
I'm using iridium plugs (less conductive than copper) gapped to 0.050". A stock coil would not have provided enough oompf to jump that gap reliably, so I'm using an MSD coil.
If we're talking about the MSD control module, I can't imagine that ever being worth the money in an XJ unless you're building some kind of super duper XJ. Even then it may easily still not be worth it.
If the stock setup is good enough for a stroker, then I wouldn't waste time or money on a name.
Senior Member
Joined: Mar 2012
Posts: 974
Likes: 14
From: Racine, WI
Year: 1997
Model: Cherokee
Engine: 4.0
A stroker is just more displacement. Your ignition doesn't care how long your stroke is. What would matter is spark plug composition, spark plug gap, compression ratio, boost, or high RPM.
Trending Topics
::CF Administrator::
Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
CF Veteran
Joined: Jul 2013
Posts: 7,554
Likes: 17
From: Monett, MO.
Year: 1999
Model: Cherokee
Engine: 4.0
I've ran MSD setups for the last 25 yrs the full deal, ON RACE CARS!!
I can see no possible reason to run one on a 4.0 unless blown, NOS or Turbo charged and that would be with a boost controller in the setup for completion. JMO but a waste of money more well spent on "Fuzzy Dice" or something else worthwhile.
I can see no possible reason to run one on a 4.0 unless blown, NOS or Turbo charged and that would be with a boost controller in the setup for completion. JMO but a waste of money more well spent on "Fuzzy Dice" or something else worthwhile.
::CF Administrator::
Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
I had the choice of running it or not.
No reason to run it. Also a bit more complex on the install, I did look into it...but decided it just isn't worth it. As Fred stated, get you some of them fuzzy dice, maybe a hula girl for the dash...
No reason to run it. Also a bit more complex on the install, I did look into it...but decided it just isn't worth it. As Fred stated, get you some of them fuzzy dice, maybe a hula girl for the dash...
Seasoned Member
Joined: May 2010
Posts: 291
Likes: 0
Model: Cherokee
I've ran MSD setups for the last 25 yrs the full deal, ON RACE CARS!!
I can see no possible reason to run one on a 4.0 unless blown, NOS or Turbo charged and that would be with a boost controller in the setup for completion. JMO but a waste of money more well spent on "Fuzzy Dice" or something else worthwhile.
I can see no possible reason to run one on a 4.0 unless blown, NOS or Turbo charged and that would be with a boost controller in the setup for completion. JMO but a waste of money more well spent on "Fuzzy Dice" or something else worthwhile.
::CF Administrator::
Joined: Feb 2011
Posts: 14,479
Likes: 805
From: Blunt, South Dakota
Year: 97
Model: Cherokee (XJ)
Engine: 4.6 stroker
LMAO
And before you ask...
https://www.google.com/webhp?sourcei...girl+dashboard
haha
Also:
Last edited by Rogue4x4; Mar 19, 2016 at 12:16 PM.
Senior Member
Joined: Mar 2012
Posts: 974
Likes: 14
From: Racine, WI
Year: 1997
Model: Cherokee
Engine: 4.0
If you (OP) want to do something, indexing and/or sidegapping are both free (well, indexing washers cost pennies). There may easily be no detectable difference, but it's something you can do to occupy yourself for a bit, certainly won't do any harm (though sidegapping may shorten plug life slightly), and doesn't cost anything.