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Old 10-25-2017, 11:59 AM   #951 (permalink)
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No need to notch the frame to be low. I have a 21.5" belly. 106" WB and 39" reds and 79" to top of cage.

Here is my 4 link.
image2 by Jeff Bell, on Flickr
image1 (4) by Jeff Bell, on Flickr
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Old 10-26-2017, 04:22 PM   #952 (permalink)
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Quote:
Originally Posted by wrangler4x4_97 View Post
No need to notch the frame to be low. I have a 21.5" belly. 106" WB and 39" reds and 79" to top of cage.

Here is my 4 link.
image2 by Jeff Bell, on Flickr
image1 (4) by Jeff Bell, on Flickr

How much up travel do you have in the rear?
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Old 10-26-2017, 04:38 PM   #953 (permalink)
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you don't have a lot of separation at the frame end though
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Old 10-26-2017, 08:48 PM   #954 (permalink)
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I have about 4.5" of up travel in the shocks. Will have 5-6" when I go to ORIs in the rear. The vertical separation at the frame works perfectly. When I originally designed the 4 link the uppers and lowers were equal lengths. When I put the doubler in I had to shorten the lowers and they are now 3 or 4" shorter than the uppers. Rig is super stable. Have ran this configuration for around 6 or 7 years now.
image1 (4) by Jeff Bell, on Flickr
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Old 10-27-2017, 01:36 AM   #955 (permalink)
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Originally Posted by wrangler4x4_97 View Post
I have about 4.5" of up travel in the shocks. Will have 5-6" when I go to ORIs in the rear. The vertical separation at the frame works perfectly. When I originally designed the 4 link the uppers and lowers were equal lengths. When I put the doubler in I had to shorten the lowers and they are now 3 or 4" shorter than the uppers. Rig is super stable. Have ran this configuration for around 6 or 7 years now.
image1 (4) by Jeff Bell, on Flickr
Are you running stock height coil springs in the rear?
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Old 10-27-2017, 05:41 AM   #956 (permalink)
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Originally Posted by wrangler4x4_97 View Post
I have about 4.5" of up travel in the shocks. Will have 5-6" when I go to ORIs in the rear. The vertical separation at the frame works perfectly. When I originally designed the 4 link the uppers and lowers were equal lengths. When I put the doubler in I had to shorten the lowers and they are now 3 or 4" shorter than the uppers. Rig is super stable. Have ran this configuration for around 6 or 7 years now.

I am sure it works fine. Mine isnt done yet but I am @ 20" to a flat belly sitting on 33" tires right now so i expect to be around 22-23" with 37's. Stock gas tank location 100" wheelbase. I did modify the front and rear frame portion though. 4" up in the rear 6" up travel in the front. just about 5.5" separation at the frame end










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Old 10-29-2017, 07:07 PM   #957 (permalink)
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Way to many variables to say you don't need to cut into floor. Mine for example, I wanted lower links at frame to be above flat belly. Proper vertical separation meant cutting into floor, I even needed to notch the frame for lower Links.
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Old 10-30-2017, 08:24 AM   #958 (permalink)
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Just a question what is the top of axle to bottom of frame measurement of a stock TJ?

What are you guys thinking for a Low COG
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Old 10-30-2017, 07:40 PM   #959 (permalink)
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[QUOTE=caryt;42289146]Just a question what is the top of axle to bottom of frame measurement of a stock TJ?



What are you guys thinking for a Low COG[/

There is no magic number for low cog. It's all relative to region and type of wheeling. I liked boulder crawling. I kept my belly at 19" with 40's and 7" and 7" down travel. That's too low for mud, but I hate mud. It was too low a few other times and I turtles on big ledges, but it sure side hilled like a goat.


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Old 10-31-2017, 08:30 AM   #960 (permalink)
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So what your axle to frame #?
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Old 10-31-2017, 05:15 PM   #961 (permalink)
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Can't tell ya, #1, sold the rig. #2, I chopped the rear frame off and raised it probably 4 inches and used 2" tube, so those numbers wouldn't help u any.


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Old 10-31-2017, 05:26 PM   #962 (permalink)
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Find stock one on a used car lot or something & take some measurements.

Not going to find a lot of stock TJ's around here

.. in the end when you're done with your build you'll probably realize getting these exact numbers really isn't necessary
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Old 11-02-2017, 11:02 AM   #963 (permalink)
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Just asking for a reference thats all...
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Old 11-03-2017, 04:14 AM   #964 (permalink)
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We had to cut the floor out to get proper separation on the frame side. Running 4 up 12 down in the rear.


Rexy doesn't look low without front fenders.




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Old 01-30-2018, 04:34 PM   #965 (permalink)
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Quote:
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We had to cut the floor out to get proper separation on the frame side. Running 4 up 12 down in the rear.


Rexy doesn't look low without front fenders.
What part of MD are you located?
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Old 02-16-2018, 12:40 PM   #966 (permalink)
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Quote:
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Quote:
Originally Posted by Makers_Mark View Post
We had to cut the floor out to get proper separation on the frame side. Running 4 up 12 down in the rear.


Rexy doesn't look low without front fenders.
What part of MD are you located?
Harford county.

Here is a picture of my TJ next to a friend's, whose running a 3" lift with 32's.
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Old 02-16-2018, 01:35 PM   #967 (permalink)
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I'll throw some pictures of mine up.

Snow picture is final ride height.

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Old 08-22-2018, 10:43 AM   #968 (permalink)
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Let's bring this one back from the dead. I'm about to put my Jeep under the knife again. In '08 I built a long arm for it and it was NOT a LCG build at all. In '16 I stretched/backhalved the rear and started focusing on a lower cg. Since I'm currently only running 37s I can't go too low because I'll drag my belly and/or link mounts on sharp breakovers/ledges....which I come across a lot.

Since I was tired of catching my long arms on these ledges I built the rear into more of a mid-length arm setup when I stretched it (99" now). That helped, but with my lower ride height I catch my lower link mounts too frequently. In the coming months I'll be converting the Jeep to a TJ-6 and want to address the rear suspension....again. Ideally I'd like to inboard or outboard the lower mounts for a smooth transition from belly to links.

I see some folks have achieved this and I'd love to see more pics of how you did it (preferably without heims as I daily this thing a lot). Most look to have bridged the gap between the chassis link mounts with steel plate and while this would provide a smooth transition, it also kills belly clearance so I'm hoping to avoid that option.

FYI, my chassis is currently at 19.5" (framerail to ground). Not what I'd call "LCG", especially since I need to raise it up a bit for more clearance. I'm also planning on going with a shorter rear arm (again) and will do the same up front when I re-do that end of the Jeep.

Here you can see my lower link mounts which catch everything:


Current ride height:
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Old 08-22-2018, 11:31 AM   #969 (permalink)
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You are catching the lower rear link mounts on the frame side? Your jeep looks exactly like my current ride height on 37's. Did you mount the rear of the gas tank skid to the bumper? im digging the current look. why shorten the rear arm stretch?
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Old 08-22-2018, 12:25 PM   #970 (permalink)
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You are catching the lower rear link mounts on the frame side? Your jeep looks exactly like my current ride height on 37's. Did you mount the rear of the gas tank skid to the bumper? im digging the current look. why shorten the rear arm stretch?
Yeah, catching the lower link mounts on the frame pretty frequently. Right now I'm on the long end of the "mid-arm" spectrum and am thinking a shorter arm would be okay if my geometry doesn't get much worse. But I'd prefer to keep the arm length and mount the brackets up higher. The wheelbase won't get shorter, though.

Yeah, the gas tank (Gen Right) bolts directly to the Undercover Fab backhalf kit after a lot of work. Here's a pic in process:


Here's a better pic:
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Old 08-22-2018, 12:59 PM   #971 (permalink)
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Running a 14bolt? Any idea how far you have the pinion up and how your driveshaft length? I think mine is going to be 19" on a 100" wheelbase
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Old 08-22-2018, 01:07 PM   #972 (permalink)
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Your mount points don't look THAT bad..... Maybe you just need larger tires !!!

For comparo, here's mine on 40's. I'm 23" to the frame rails, which puts you actually lower taking into account the tire size difference.

https://drive.google.com/file/d/1o6T...ew?usp=sharing

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Old 08-22-2018, 02:13 PM   #973 (permalink)
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Running a 14bolt? Any idea how far you have the pinion up and how your driveshaft length? I think mine is going to be 19" on a 100" wheelbase
Nope, just a Dana 44. I have a Sterling 10.5" waiting to go in sometime next year.

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Your mount points don't look THAT bad..... Maybe you just need larger tires !!!

For comparo, here's mine on 40's. I'm 23" to the frame rails, which puts you actually lower taking into account the tire size difference.

https://drive.google.com/file/d/1o6T...ew?usp=sharing

Yes, I definitely need bigger tires, but not until I get bigger axles installed. But regardless, I think the benefit of running a lower link mount that's higher up will be a big win in for belly clearance!
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Old 08-28-2018, 09:58 AM   #974 (permalink)
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Not a TJ but 21" to the frame rail




Last edited by HankScorpi0; 08-28-2018 at 10:00 AM.
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Old 02-05-2019, 07:01 AM   #975 (permalink)
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My TJ before the LJ Stretch. 73 6 of uptravel
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