CJ& Suspension Upgrade (Possible Reversal and Front Driveline Q) - JeepForum.com
 
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post #1 of 3 Old 09-19-2017, 11:28 AM Thread Starter
deminimis
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1986 CJ7 
 
Join Date: Jul 2005
Location: Down in the Pig Mine
Posts: 426
CJ7 Suspension Upgrade (Possible Reversal and Front Driveline Q)

Starting to get ready to gather the parts for a 2.5" BDS YJ conversion (kit moves front shackle mount out approx 1" from stock due to longer springs). I'm also about to pull the trigger on an EB Ford 9" for later (meaning I'm just doing the BDS conversion for now and I'll deal with installing the 9", etc at some point in the future (baby steps)). With that, I'll be looking for a Scout II D44 for the front (and doing all that is needed there), again, for later. SUA. When it comes to outboarding, I can certainly fab up the goods just fine, but looked at kits nonetheless. All the outboard kits that I looked at were for shackle reversal systems. I wasn't looking to go with a shackle reversal, but I get the reason why one might like to go that route (actually makes a lot of sense for our intended use) and I get the reason not to do it. Again, I'm just considering a reversal and not asking for pros/cons. There's the background.

My questions concern the front drive line/shaft: For those that have gone with a reversal, does the stock CJ7 front drive line (TF999/D300) have enough plunge to handle a shackle reversal (again, only a 2.5" lift and that includes .5" shackles), or do I need a drive line shop mod the factory shaft, or do brand X vehicles have ones that work, good off the shelf option, or? My guess is the factory front drive line won't work, but perhaps, but I'm also guessing a few of you know for sure (and the best work-around if needed). Thanks!

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post #2 of 3 Old 09-19-2017, 12:59 PM
Fourtrail
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1974 CJ6 
 
Join Date: Dec 2007
Location: Illinois
Posts: 1,991
No, with any flex at all, you will either collapse or pull apart the stock driveshaft slip joint. I would have the shop order a long slip joint and then have a new driveshaft made. The factory small diameter is too easily bent in my opinion.

80 CJ-5, 74 CJ-6, 56 CJ-5
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post #3 of 3 Old 09-19-2017, 01:41 PM Thread Starter
deminimis
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1986 CJ7 
 
Join Date: Jul 2005
Location: Down in the Pig Mine
Posts: 426
Thank you sir.
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