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Topic Review (Newest First)
10-10-2013 10:23 AM
techflork agreed. Well, looks like I'll just wait till I get the lift. It'll live lol
10-10-2013 09:47 AM
PStov98TJ
Quote:
Originally Posted by techflork View Post
digging up an old thread, I wanted to know how your skid is holding up. This is my next thing to do. Also are the control arms really really necessary? I don't have a lift, I put 33's on with some metalcloaks. The suspension is 100% stock. I don't mind buying the new driveshaft set up, body lift, shifters, and plate but the control arms are going to be savvy or metalcloaks and I want to get them with my lift. I have no reason to lift it until I'm set for 35's which won't be for a few years. Can I not buy new control arms?
If you do the ultimate clearance skid, you'll definitely need adjustable rear CA's and an sye/cv. You're lifting the t-case output shaft by 3-4 inches, which is the same as doing a 3-4 inch lift. You could avoid it by going with a skid that tucks the t-case less, but why would you spend the money and not get the most out of it?
10-10-2013 09:04 AM
techflork digging up an old thread, I wanted to know how your skid is holding up. This is my next thing to do. Also are the control arms really really necessary? I don't have a lift, I put 33's on with some metalcloaks. The suspension is 100% stock. I don't mind buying the new driveshaft set up, body lift, shifters, and plate but the control arms are going to be savvy or metalcloaks and I want to get them with my lift. I have no reason to lift it until I'm set for 35's which won't be for a few years. Can I not buy new control arms?
08-15-2012 07:19 AM
Imped
Quote:
Originally Posted by rbkelley89 View Post
By saying to use the lopro mount to get the tease lower do u mean higher up against the body? I have a 2" bl so hopefully this should help with the clearance of the exhaust.
Reducing the height of the mount between the transmission and the skid will lower the trans/t-case. When tucking, you want to maximize belly clearance while minimizing the amount you raise the drivetrain. That means you need to make as efficient use of the space between the skid and trans/t-case as possible. The lower the trans/t-case, the less your driveline angles will be, which provide many other benefits such as a shallower required pinion angle F/R (making it easier to run ideal caster up front). The less you raise the trans/t-case, the less extra room you need at the tub, as well. The benefits of keeping them as low as possible are extensive.

As for the exhaust, the point isn't making room for it....so your extra 1" of body lift isn't doing anything for you but looking goofy. The goal with your exhaust is to set it so that it's neutral, not being torqued up or down with the skid plate in place. It goes up with the trans/t-case so the exhaust mount at the trans mount bracket needs to be cut and set lower in order to place the exhaust in a neutral state.
Quote:
Originally Posted by rbkelley89 View Post
Oh thanks. One more ? I read that the lopro mount is for the 03'+ tj's and that the 97-02' do not benefit from them because of the different mount jeep used for the newer model. is this true
Look on the website. It's made for both. If you look at them, you'll see the extra plate on the early model version, probably due to the slightly different height of the trans mount bracket. I've installed these on both early and late models--they work very well as long as you've got a little common sense on how to make the proper adjustments. The mounts won't work on the 32rh auto.
08-14-2012 06:12 PM
TnDz TJ
Quote:
Originally Posted by rbkelley89 View Post
Oh thanks. One more ? I read that the lopro mount is for the 03'+ tj's and that the 97-02' do not benefit from them because of the different mount jeep used for the newer model. is this true
The lopro mounts give you options for various types of 'fixes' for TJ's

eliminate a t-case drop
TT without a BL
reducing driveline angle is what I will be using it for....

A combination of components can be used to increase belly clearance as well....

Read up on the various uses on UCF's site...

There are two models of Lopro... 97-02 and 03-06

Here is a link to UCF lopro for 97-02

Under Cover Fabworks, LLC - UCF LOPRO ('97-'02 TJ) Trans. Mount

08-14-2012 03:57 PM
rbkelley89 Oh thanks. One more ? I read that the lopro mount is for the 03'+ tj's and that the 97-02' do not benefit from them because of the different mount jeep used for the newer model. is this true
08-14-2012 02:58 PM
TnDz TJ
Quote:
Originally Posted by rbkelley89 View Post
By saying to use the lopro mount to get the tease lower do u mean higher up against the body? I have a 2" bl so hopefully this should help with the clearance of the exhaust.
No... lower to the belly skid, I have plenty of body clearance with the stock mount and only 1.25" BL.... The issue is the angle your driveline operates at. With my setup, I went from a 16 degree angle to 24 degree angle which is a bit excessive. By adding the Lopro mount, my t-case will be lower to the skid, thus reducing the driveline angle for better operating angles.

I will have to readjust the pinion angle once again, but that's a given.
08-14-2012 02:15 PM
rbkelley89 By saying to use the lopro mount to get the tease lower do u mean higher up against the body? I have a 2" bl so hopefully this should help with the clearance of the exhaust.
08-14-2012 12:16 PM
TnDz TJ No difficulties ... Just a bit more work I guess. A little contact here and there with exhaust is the only hang up right now.
08-14-2012 06:51 AM
jbydesign I had less dificulties... 1" MML which helped along with lopro tranny mount...
08-13-2012 02:33 PM
TnDz TJ
Quote:
Originally Posted by Imped View Post
So what's your current pinion angle? But yes, with such tall coils your goal should be to get that t-case as low as possible. If you want to get the exhaust back to being happy, shorten the exhaust mount. Wait until you do the LoPro mount before doing this.
Pinion is 23 and driveline is 24. I'm heading to the Rubicon on the 24th... everything should be good to go for the 4 day run.
08-10-2012 11:38 AM
TnDz TJ Yeah. No mods til the Lopro for sure. I gotta get back under and measure.
08-10-2012 08:21 AM
Imped So what's your current pinion angle? But yes, with such tall coils your goal should be to get that t-case as low as possible. If you want to get the exhaust back to being happy, shorten the exhaust mount. Wait until you do the LoPro mount before doing this.
08-10-2012 08:12 AM
TnDz TJ
Quote:
Originally Posted by LilYeller View Post
Its always good to hear these things before you start a project like this. Is there anything else you might have done differently given the time and resources?
Um... short SYE for sure....which would be a different CV shaft
Novak cable shifter would be a plus, though I got my linkage working good

BE PREPARED for exhaust clearance issues. Since the main mount is part of the t-case ( right at the t-case mount ) it gets pushed up with everything else. I have body contact at the rear upper CA , shock, and up front at the tub I have a rattle at idle....

Quote:
Originally Posted by Imped View Post
I'm shocked at that pinion angle.....it seems excessive. You sure that angle finder is right? I'd recommend going with the LoPro mount ASAP to reduce that operating angle. Just as a reference, my pinion/shaft angle was at 20* with my flat skid and LoPro mount with the rear axle in the stock location. It looks like you've got taller springs than I do and my skid sits the t-case a bit lower (to the skid) than the UCF does. In the mean time, I'd recommend putting some extra diff lube in to prevent the pinion bearings from running dry.

I was too! Angle find is dead on. I only have RC 4" coils.....I was thinking about adding the lowpro mount.... might be a good idea to get the t-case a little lower. Adding fluid is a good idea... though I over-filled it back in April as I was doing the lift install.

FYI... that pic of the pinion angle is AFTER the TT but BEFORE the pinion rotation.... it's not that bad now... when the pinion went up the angle descreased a lot. I have already had it wheelin last Sunday... no issues.
08-10-2012 07:31 AM
Imped I'm shocked at that pinion angle.....it seems excessive. You sure that angle finder is right? I'd recommend going with the LoPro mount ASAP to reduce that operating angle. Just as a reference, my pinion/shaft angle was at 20* with my flat skid and LoPro mount with the rear axle in the stock location. It looks like you've got taller springs than I do and my skid sits the t-case a bit lower (to the skid) than the UCF does. In the mean time, I'd recommend putting some extra diff lube in to prevent the pinion bearings from running dry.
08-10-2012 04:45 AM
jbydesign Nice write up ... I went with Nth Degree about 6 months ago... Same story... Inrollnwith guys on 40 s and clear almost everything... I was starting to hang up on the tank skid a lot so I opted for a savvy alm skid whiched allowed me to lift the tank an 1"... Very solid skid too! Good luck with your new found clearance!
08-09-2012 07:35 PM
jasongind I did the BL, MML, TT, and long arm lift all in two days while parked on the street in front of my house in Denver. I was amazed at the difference the TT made. If I had to do it over again and would do differently, I would find someone to let me use their garage to do it in! lol
08-09-2012 07:05 PM
LilYeller Its always good to hear these things before you start a project like this. Is there anything else you might have done differently given the time and resources?
08-04-2012 10:26 PM
TnDz TJ Thanks, Lindel.... If I would have thought it through completely.. I would have gone with the MEAGASHORT SYE
08-04-2012 10:06 PM
lindel Nice work Todd. Good gain on clearance.

I'm still a long way from that point, but it's something to shoot at. A little bit at a time.
08-04-2012 09:54 PM
TnDz TJ Anytime, Phil.....

I don't think I left anything out as far I can see. The linkage is the biggest thing you will need to give attention to for sure. Mine is far from perfect, but it worked with a little tweek here and there. I may just make a new bracket to replace the one that mounts on the side of the t-case that hold the linkage bar from the body.
08-04-2012 09:00 PM
pcwolf Thanks for the update Todd ... I have a Rokmen skid that gains 2.25" over stock and working up to the installation. Your thread helps me see where the "gotchas" are

I love Virginia where everything is green, but try working in 101 degrees with 88% humidity sometime ... UGH
08-04-2012 07:41 PM
TnDz TJ LOL! Thanks..... it was 101 today... WAY too hot to get er done... but I pushed through it with a few beers... lol!!!
08-04-2012 07:35 PM
BLK00TJ What kind of black magic is that? Your skid just *poof* disappeared!

Good job! I can't wait until I get the parts together for mine. I'm to the point where prices keep rising so I may as well just order what I can and put it away while I can.
08-04-2012 07:28 PM
TnDz TJ OK guys.... finished the TT.... here we go...

I did NOT go with a LoPro mount... used the factory mount

I started with a some measurements...



15" of ground clearance with the stock shovel.....



The angle of my rear driveline was sitting pretty at 16 degrees and 15 at the pinion.... just did this to show what the angle change is with THIS UCF extra clearance skid...



-I unbolted the 4 tranny mount bolts
-Took the 4 screws off the radiator shroud ( I knew I needed to relocate it )
-Jacked up the trans about 2.5" higher than the stock shovel and supported it with a jackstand.
-lowered shovel
-Installed UCF skid loosely
-Lowered tranny/t-case onto new skid aligning the trans mount... finished tightening the skid

Took some more measurements...



I gained a total of 2" of belly clearance... Just what I expected.


What I didn't expect was the LARGE increase in driveline angle... from 16 degrees to 28 degrees... WOW!!! The tape in the below pic shows where the splines were prior to the TT... 3.25" showing... now.... 4" showing.



I knew I needed to adjust my pinion angle from the start... so I hopped on that right away... about 45 minutes to an hour I had dialed my driveline and pinion back in with a couple of tries... no biggie there.... I have plenty of slip left in the driveline (3.75") and after adjustments, the total exposed slip is at 3.75" versed the 3.25" from before the TT...

I had to relocate the fan shroud DOWN about a 1/4" from stock... took like 10 minutes and a dremel tool.

I can definitely see why a lot of folks go with the Novak cable shifter... I am ok with the little tweeking I did on the rods and adjusting the linkage.... no binding at all and shifts smooth, though its not perfect by any means. Tomorrow will be the test run.

The front exhaust hanger is part of the trans mount, so the exhaust got pushed up a bit and I have contact at the upper control arm bolt with the muffler and the tailpipe now hits my rear shock. It's a solid contact at this point and no rattles, but needs some attention.

All in all... about 3.5 hours to get it done and back on the road with no vibes or rattles.

Now that I see why NEW BOLTS are needed, I will be replacing them, THANKS DOC!


***REMEMBER.... I had mostly everything I needed to get the TT done already... just needed the new skid.***

If you are starting from scratch.... you need DEEP pockets....

Here is the final outcome... I couldn't be happier.....

08-04-2012 01:45 PM
TJDave I've had the same skid for over a year. Love it. It really helped me on the deep mountain snow runs last winter, vs the years before.

I painted mine Rustoleum hammered black.

Hmm. I reused my stock pan bolts. I better go check on them.

Post more pics when you are done!!
08-04-2012 12:45 PM
Leslee Did you use your old tran. mount or go with the lopro mount
08-04-2012 12:30 AM
TnDz TJ I hear ya... pickin your line is key in just about every challenging obstacle... pickin RIGHT is when you don't need a winch to 'assist' you off a rock.

Most often than not, I find myself taking things slightly on the 'high side' of obstacles to ensure ample clearance underneath the diffs.

Gaining this 2.5" plus of belly clearance is surely gonna help me out.... I have caught more junk with that stock shovel... sigh.... on my third one... NO MORE!!! I SAY.... NO MORE!!! lol!!
08-04-2012 12:29 AM
doclouie
Quote:
Originally Posted by TnDz TJ View Post
You all helped me a lot on the TT thread.... thanks....

Why the need for the new bolts? Curious...
You will see that the bolts have a self centering bowl and will not hold the pan tight. Make sure you buy washers too.
08-04-2012 12:24 AM
BLK00TJ Yeah, front stuff I can pick lines and protect things there. But I admit I'm a dork when it comes to thinking about where my rear end is going when picking the next line. I drag my rear axle over stuff that could have been avoided. I am getting better though. Only one thump last weekend and it wasn't my gas tank skid this time.
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