Body Mount Bushings - JeepForum.com
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post #1 of 16 Old 06-08-2019, 08:34 PM Thread Starter
orange150
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Body Mount Bushings

I asked on CJ-8 but didn’t get the best of responses, so figured I’d ask here.
It’s finally time for me to tackle the body mount bushings and I need to know whose kit to buy. I’m considering going with rubber over poly, but am worried about the quality of the rubber.


'82 CJ-8
258/AX15/D300
OME YJ 2.5"/31s
D30/D44/3.73s/Truetracs
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post #2 of 16 Old 06-09-2019, 02:12 PM
OrangeCJ-5
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I went with rubber bushings but that was two years and maybe 400 miles ago so I donít have any long term answers for you.
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post #3 of 16 Old 06-09-2019, 02:53 PM
redfin188t
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I went with poly bushings when I did mine, if I had to do it again I'd go with rubber. Not sure you can tell much difference in the ride quality since the Jeep is rough riding anyway. I think all I gained was a few more squeaks that I don't think you get from using rubber.

Life is fraught with opportunities to keep your mouth shut. -Winston Churchill-
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post #4 of 16 Old 06-09-2019, 05:00 PM
keith460
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I have the Crown OEM type rubber mounts since 2011 and put about 20,000 miles on them so far, and so far so good. It was an older kit that I bought that did not include the front grill mount like they do now. We on the Jeepforum pressured them into including the grill mounts and now they do. You still have to cut down the steel bushing to make them fit except the very front toe board ones that receive the large lower isolating bushing. See the Sticky on them here: https://www.jeepforum.com/forum/f8/t...hings-1079680/

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post #5 of 16 Old 06-09-2019, 07:12 PM
LumpyGrits
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Cj

Get the poly and only snug the bolt 1-2 turns after contact to the bushings.
Use #242 or #243 Loctite on the bolt threads.
LG

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post #6 of 16 Old 06-09-2019, 08:46 PM Thread Starter
orange150
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Thanks y’all! Sounds like I’m going with the Crown kit. I’ll report back once I get it installed, might be a while though. I am slooow to get projects done.

'82 CJ-8
258/AX15/D300
OME YJ 2.5"/31s
D30/D44/3.73s/Truetracs
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post #7 of 16 Old 06-10-2019, 01:20 AM
only in a jeep cj
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You may want to look into the smaller of the two sizes used on the YJ/TJ. The design, fit and quality are FAR better than the CJ type. They are the same size as the CJ mount in both hole used and height. They use a one piece domed top to cup and hold the rubber better. Ive seen almost very little splitting in the rubber vs all the old CJ stuff splits. The inner sleeve is encased in the rubber and the bottom bushing has a built in bottom washer for the correct preload. Here is some random pics from another thread. I used a poly CJ bushing to compare next to the smaller of the two TJ bushings.










As much as I want stock and original parts on my CJs, unless I'm going for a FULL correct restoration, I use them all around. 10 on a CJ-7 and 12 on a Scrambler.

Ed
1975 CJ-6 1983 CJ-8
1986 CJ-7 Laredo 1986 TJ-7 Trail Jeep
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post #8 of 16 Old 06-10-2019, 04:58 AM
keith460
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Where would one even be able to purchase the YJ type body bushing set? And what tubes go where, their are long and short ones?
Something like this?: https://www.quadratec.com/products/55008_01.htm
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post #9 of 16 Old 06-10-2019, 07:25 PM
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Where the CJ uses the same size mount all around, the wranglers use two sizes. The larger ones are the 6 under the main floor. These do not fit a CJ frame unless you want to die grind the mount holes slightly larger. I did this to a hunting camp jeep (read as not a rust free or perfect frame) and it gives about a 3/4" body lift. The other size of wrangler bushing is the smaller size located at the rear section of the tub. These are located at the same place as the CJs with two in front of the gas tank and one each at the back corners. It is these mounts that are the same size as the CJ mounts.



Buying a new YJ/TJ set will NOT give you the total bushings you need. You would need to gather the smaller bushings from several wrangler part outs or call a Jeep dismantling place.
They may be confused and not understand what you are doing. Just tell them its a special project and you need 10 (or 11 if you do the front grill) of the smaller of the two sizes. You dont need the bolts. You will be using a different size thread that fits the CJ tub. Each mount will be 3 pieces consisting of the metal shell, the upper rubber, and the bottom rubber/washer combo. Unlike the CJ, this part of the mount is fused together. The last set I bought came from out west so they weren't rusted. With shipping, just under 100 bucks. I showed the customer the difference in the two styles and he was pleased with them.

Ed
1975 CJ-6 1983 CJ-8
1986 CJ-7 Laredo 1986 TJ-7 Trail Jeep
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post #10 of 16 Old 06-10-2019, 08:01 PM
Ken4444
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I used poly bushings to replace my original rubber ones primarily because I figured they would last forever, and I could get them in red so it's obvious to a careful observer that they've been replaced Are you aware of the techniques to remove the old rusty body mount bolts?

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post #11 of 16 Old 06-10-2019, 08:32 PM
MetalMountainGoat
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I am dreading tackling this task, but it is next on my list. I want to go back with the rubber ones, and have read the sticky thread for it. I just hope I don't have any body bolts that won't come out.
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post #12 of 16 Old 06-11-2019, 05:25 AM
Ken4444
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Quote:
Originally Posted by MetalMountainGoat View Post
I am dreading tackling this task, but it is next on my list. I want to go back with the rubber ones, and have read the sticky thread for it. I just hope I don't have any body bolts that won't come out.
My advice would be to heat the head of each bolt until it's very hot. Orange hot if you can go that far. You will end up burning the old bushings. It will be a mess. Then soak with penetrating oil overnight for a day or two. Then use an impact wrench briefly, but alternate between loosening and tightening the bolt. Just get it to turn a little in each direction. Once the bolt starts to turn then soak again with penetrating oil an slowly work it out.

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post #13 of 16 Old 06-11-2019, 12:57 PM Thread Starter
orange150
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Man you just made me dread this more than I was before.

'82 CJ-8
258/AX15/D300
OME YJ 2.5"/31s
D30/D44/3.73s/Truetracs
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post #14 of 16 Old 06-11-2019, 07:58 PM
BrutusBlue
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Wait until you discover that two or three of your mounts have rusted out or severely pitted out holes where the bushings rest. They may look perfectly fine from the outside but utterly destroyed on the inside. Even the dryer, salt free areas of the country can experience rusted out mount holes.
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post #15 of 16 Old 06-11-2019, 08:36 PM
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Quote:
Originally Posted by BrutusBlue View Post
Wait until you discover that two or three of your mounts have rusted out or severely pitted out holes where the bushings rest. They may look perfectly fine from the outside but utterly destroyed on the inside. Even the dryer, salt free areas of the country can experience rusted out mount holes.

yep...true
That's why I went with the bigger sized bushings on this one budget Jeep. It was easier and faster to die grind and clean up the holes to the larger size than repair them.

Ed
1975 CJ-6 1983 CJ-8
1986 CJ-7 Laredo 1986 TJ-7 Trail Jeep
2003 Inca Gold TJ Rubicon
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