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Old 01-31-2010, 09:10 PM   #1
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Home made Tummy tuck

Hey guys. I was thinking recently of a good summer project for me to do. I, being a teenager, personally have no experiance with fabricating but i have many friends and family members that do and can help me. I want to design a transfer case skid plate. In this design i plan on using 1/4 inch steel, make similiar bends as the stocker has, make the front of it have a face to prevent the skid from being like the shovel i have down there and to remove around 2 inches of skid.

MY JEEP: It is a 2001 4 cyliner 5 spd. It has 2.5 inches of lift and a dropped transfer case.

i've heard on a 97-02 wrangler you need a body lift for a tummy tuck. why would i need this? would i need this if i made it myself also? what is the purpose because i really don't want a body lift.

lastly i plan on designing it on Autocad. any suggestions or hints are welcome.

2001 Jeep Wrangler 2.5

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Old 02-01-2010, 07:17 AM   #2
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first off remove that TC drop, you don't have enough lift to validate the loss of clearance. second, I really don't have any experiance in fabbing a TT kit but keep us informed on what you decide to do, I'd be interested in hearing more about it.

Keepin the peace.

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Old 02-01-2010, 08:15 AM   #3
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Any particular reason your looking to design it on Autocad? If you have experience using that program then that is perfectly fine but if your going to be learning to use a design software at the same time you are modeling this thing out then Id suggest you look into creating this thing on CATIA. In my opinion it is much easier to use and a more powerful and useful program to model parts on. I'm a mechanical engineering student at CMU about 1 semester shy of graduation at this point so I have been dealing with these programs for the past 4 years. I do think this is a great project and by creating a tummy tuck you are going to esentially be introducing about an equivalent of 3-4 inches of lift to the center of your Jeep. To answer your question about the body lift, yes, you will very likely need to install one. The reason being that by building a flat belly skid like this you are shaving off the added material that hangs down when you use a stock skid. By raising the entire skid higher you are also raising the mounting point for your transfer case and that pushes the drive line higher into the bottom of the tub of your Jeep. Chances are that if you build a proper tummy tuck then you are going to hit the bottom of your tub with your trans and tcase. By using a body lift you put the body up an additional inch and now have the clearence to run your new lower profile belly skid. It isnt the end of the world but just to a 1" bl and you wont need to worry if everything will clear or not. By building this skid you are also introducing a steeper rear driveshaft angle and you'll likely want to go to a slip yoke eliminator and tom woods style driveshaft. That is going to run you about $500 depending on where you find it. Not to scare you away but its something to think about. Good luck with the project!

Without a Jeep for now...
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Old 02-02-2010, 08:38 AM   #4
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i would definately think about investing in a SYE kit with CV driveshaft. Tom woods sells a great kit.

and as stated by grntj the body lift allows you to raise the driveline higher into the tub, but you have to remember that if you just take out the trans drop there is 1" (back to stock location) and if you build a tcase skid to go even higher then stock then yes a BL will difeinatly be in order unless your really good with sheet metal... but only a 1" prolly necessary. i dont recommend anything more than 1" BL

only thing that would concern me and it may not be an issue is if you raise the tranny up higher than stock how bad of an angle are you changing the engine to transfercase driveline angle?? if it were an issue would raising the engine mounts up 1" along with the 1" BL and 1" crossmember tuck do the job... then my only concern would be your driveshaft angle but if your only going 1" up from stock i dont think it will be a problem...
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Old 02-05-2010, 08:13 PM   #5
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Old 05-15-2011, 08:02 PM   #6
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if no suspension lift is done, but a 1.25" BL do I still need a sye? or adjustable rear control arms. I've read that when I do a homemade TT I can get away with use'n the stock trans mount it'll just move the T-case up four inches. can I just get away with a longer drive shaft . Again I have NO lift and I drive a TJ.

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