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Unread 09-19-2013, 06:23 AM   #1
DonAltman3
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1988 YJ Wrangler 
 
Join Date: Apr 2008
Location: south Georgia
Posts: 258
IGNITION Q's MSD +_Juicebox + Nutter

Hey All.. I have a question for you. I have an 88 YJ auto with a 4.2L.. I've done the mc2100 upgrade and also the Nutter conversion to my ignition.

I have a new distributor and when I put that on I installed better wires and a MSD blaster 2 ignition coil.


Well.. I just ordered most everything to do the juicebox.. The cap adaptor... cap and rotor ... (like I said my wires are already upgraded) This leads to my actual question....

Could I get away with not going to the ford style ignition box and keep using this relatively brand new MSD blaster coil? Just how much of an upgrade would I get from also swapping the coils? Would it be noticeable in your opinion? I plan to do the rest of the upgrade either way.


I really wish I would have known about this earlier.. the price I paid for the blaster coil would have probably paid for the complete juicebox conversion.
about 50 bucks if I remember right.

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Unread 09-19-2013, 09:10 AM   #2
Que89YJ
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1989 YJ Wrangler 
 
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Location: Detroit, Michigan
Posts: 14,989
You dont need the ignition box if you already have the MSD. They are both doing the same thing by upping the voltage to your distributor.
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Unread 09-19-2013, 09:22 AM   #3
Beachcruiser
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1987 YJ Wrangler 
 
Join Date: Feb 2008
Location: Raleigh, NC
Posts: 375
If you are using the jeep-style distributor (with the cap/rotor upgrade)...then you need to still run the ICM. If it's an HEI style distributor, then you don't.

Yes, you can run an upgraded coil w/ the jeep-style distributor....I'm using an Accel hi-perf coil (square) mounted to the firewall. Works great & plugs are gapped to .040.
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probably out breaking stuff.
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Unread 09-19-2013, 09:39 AM   #4
Que89YJ
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1989 YJ Wrangler 
 
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I reread his post Beachcruiser. I had just assumed that it was a HEI but he doesn't say that. Good catch! Are you buying a HEI?
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Unread 09-19-2013, 09:46 AM   #5
DonAltman3
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1988 YJ Wrangler 
 
Join Date: Apr 2008
Location: south Georgia
Posts: 258
I have done the nutter bypass.. I am currently using a MSD can style coil and the regular jeep cap rotor.. My ICM is no longer being used.. KLinda confused me beach ?!?!?


I am going to put on the ford style cap adaptor, cap and rotor button.. but my question is since I kinda upgraded the coil already with the MSD BLASTER 2 can style coil...
Should/would the ford TFI coil be a considerable/noticeable upgrade ?

or worded another way...

How comparable is the msd blaster 2 to a stock ford TFI coil.
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Unread 09-19-2013, 11:38 AM   #6
Que89YJ
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1989 YJ Wrangler 
 
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Location: Detroit, Michigan
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The MSD is a 5/10K difference in voltage. They both are increasing the gap and making a hotter spark. I think the OEM testing is much more stringent so reliability on the ford is probably better but subjective. MSD reputation is good. Performance differences will be negligable.
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Unread 09-19-2013, 01:19 PM   #7
DonAltman3
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1988 YJ Wrangler 
 
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Location: south Georgia
Posts: 258
oh.. great news then.. I wont have to worry about getting another coil.. so upgrading my jeep ignition system wont cost much money at all..

I think for the few dollars it costs everyone should probably switch over to the larger style ford distributor cap and button.

Thanks for the help.

I found an amazing write up for doing this procedure if anyone is interested in seeing it with pictures/part numbers and easy to follow instructions.

http://www.jeepz.com/forum/engine/16...n-upgrade.html
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Unread 09-19-2013, 01:26 PM   #8
Que89YJ
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1989 YJ Wrangler 
 
Join Date: Apr 2008
Location: Detroit, Michigan
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Search for the team rush upgrade. It should be linked in the faq.
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