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Unread 04-16-2014, 02:32 PM   #1
Daves86cj
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MSD6a - will it fit behind cj7 glovebox?

Did the nutter, cleaned up the wiring, now I've removed the factory ignition module and trial installed a MSD6A and a Blaster 2 (used, from CL). The MSD stuff worrks great and now I want to do a permanent installation. I was going to mount it on top of the passenger fender like many have but with the old confuser gone I thought that maybe the msd6a would fit behind the glovebox and I could run the wires out thru that nice big grommet for a clean installation.

I've never had the glovebox out and I'm kinda lazy. Does anyone know if the msd box will fit behind the glovebox where the old computer was. When I took the old one out I was able to pull it out under the dash so I never saw where it was mounted.

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Unread 04-16-2014, 03:16 PM   #2
Mike86CJ7
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I mounted mine under the dash on the firewall and truly learned where the term "buzz box" came from. The emi noise emanating from the box is heard in my CB and stereo. Were I to do it again, I'd mount the MSD box out on the fender. Just food for thought!
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Unread 04-16-2014, 05:00 PM   #3
Daves86cj
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Hmm, very good point on the emi Mike. I will definitely test it out first under the dash to see if I get any interference. As an amateur radio operator I've had a little experience with emi and sometimes it can be eliminated pretty easy with a filter or just good grounding. Other times it can be a real b*tch. But you are right that it's not worth a lot of effort if locating on the fender fixes it. Thanks for the advice!
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Unread 04-16-2014, 05:06 PM   #4
garusher
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I put mine on the firewall behind the air cleaner, do not know it this will be good or bad.

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Unread 04-16-2014, 05:38 PM   #5
Rusty4x
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Area behind glove box

Here's a link to what it looks like behind the dash. Hope it helps.

https://www.dropbox.com/s/vi17pxokwhwu0yk/CIMG1953.JPG
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Unread 04-16-2014, 05:46 PM   #6
Matt1981CJ7
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The ICM should be mounted where it can get a lot of air and stay cool. I wouldn't stick it behind the glovebox.

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Unread 04-16-2014, 07:49 PM   #7
BagusJeep
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Bagusjeep Duraspark module sits behind the glove box on the firewall, plenty of space back there and it does not get very wet very often. Bagusjeep is open and unheated so as good as placing it under the hood, which gets rather hot. It depends on what else you have back there.
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Unread 04-17-2014, 05:16 AM   #8
AFRd_CJ5
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I don't have a heater in my Jeep, but there's where my MSD box has been for many years without issue.
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Unread 04-17-2014, 07:32 AM   #9
Thbugman
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So I have a Mallory HEI in my sbc. Does a MSD6 really help that much?
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Unread 04-19-2014, 10:54 PM   #10
chris989604
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i went next to the booster
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Unread 04-20-2014, 10:11 AM   #11
keith460
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The MSD units are a little thicker then the factory MCU's but will probably fit in that space were the OEM computer was. They need to keep cool though.

I choose the upper portion of the passenger inner fender well to mount mine and after driving the Jeep around with 8 different locations of temperature probes, it confirmed it was one of the coolest area's for I6 equipped engine compartments. I used our test instruments from work called a 'MOLE' unit for balancing heat in large production Tunnel Ovens we sell. The probes were mounted around various sections in a Jeep CJ engine compartment.

Best locations with low heat: upper side of passenger fender, lower portion of driver fender(factory), under battery tray, topside of driver fender(near horn).

Worst locations with high heat: center of firewall above engine, anywhere within two feet of the exhaust manifold especially at idle.

The other areas of the firewall away from center were OK but still much warmer then the fenders.
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Unread 04-20-2014, 01:38 PM   #12
cjjon7
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I modified the stock brains bracket and put mine in there, atop the heater box behind the glovebox...and yes it fits nicely with just slight modification to the oem bracket...fits nice and snug
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Unread 04-21-2014, 07:01 AM   #13
GPER
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I mounted mine on the back side of the dash where the speaker slots are.
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Unread Yesterday, 11:41 AM   #14
Daves86cj
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Wow! Lots of good ideas. Thanks guys, I'll let you know what I end up with. I like behind the glove box for a clean install but the top of the pass. fender is better for serviceability.
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Unread Yesterday, 12:27 PM   #15
AFRd_CJ5
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Quote:
Originally Posted by Daves86cj View Post
Wow! Lots of good ideas. Thanks guys, I'll let you know what I end up with. I like behind the glove box for a clean install but the top of the pass. fender is better for serviceability.
I can verify it's a PITA to work on behind the glovebox
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