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 Post subject: HOW TO: Pound pinch welds, stop fender rubbing...
PostPosted: Sun Dec 09, 2007 9:00 pm 
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Pounding the pinchwelds and altering the fenders are common modifications that needs to be done if you go bigger on the tires and lift. Once I put on my 245/75-16 General Grabber AT2's on, seen HERE, I had some noticeable rubbing even with Rusty's coil lift. Well, I looked everywhere and found several methods to do this, but not one definitive way that was easy and had plenty of pics, explanations for the noobs, etc...so here you go.

Some people remove all the plastic, or cut both sides. Being in the medical field, aesthetics are important to me, and I KNEW it would be easier to just cut one side.....less cutting means less repair, better end result. So....

YOU WILL NEED: Heat gun, vice grips, leather gloves, large flathead screwdriver, large heavy hammer or mallet, cutting tool (dremel), jack stand, jack, primer, paint (or undercoat), beer.

1) First, remove your tire, and have the Lib on one jackstand. You can jack it up under the lower control arm.

I started to cut across the top, and then down the groove on the inside of the wheel well using a dremel with a cutting wheel. This works great, although you could use a pair of trauma scissors, metal snips, etc. I cut the flap then using a heat gun melted the plastic along the bend of where I was going to pull it back.

Image

2) Soften up the plastic (it is super easy to work with, the hotter it gets, the gooier and more malleable it becomes, almost like glue. Grab the flap with a tool (I used vice grips) or leather gloves, and slowly pull back, heating the whole time. Vice this in place. This gives you a great shot for your surgery.

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3) Using a BFH, pound the pinch weld tight against the body, as far up as you can go.

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4) Once this is complete, break out the automotive primer. I did three light coats, warmed up and cured with the heat gun for expedience sake.

5) Opinions vary, but after this I just sprayed on two coats of heavy duty black spray paint. It should hold up just fine.

Image

6)Once you have painted the weld, its time to replace the plastic on it. Heat the plastic up along the crease, and bend it back half way. You will notice that you still have that huge outcropping of plastic...no worries. This is where you heat up the entire flap, and using gloved bend and shape the plastic flap completely flat (or as close as you can get it.)

7)After you get the flap physically flat, heat it up again and bend it to the other side, placing the excess under the opposite side, and get ready to start the re-seal process.

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8) You will notice that since you flattened the flap out, it is much wider and does not match up with the other side. Don't worry! This is by design...by having that flap longer, you now have 10x the surface area to join the edges. Just tuck the flap and edges completely under the opposite side. This will be a much sturdier and stronger setup then just having a couple of welds on either side.

9) Now it is time to rejoin the edges. Heat up both ends (also heat from the inside) and start to mash them together using a large flat headed screwdriver. This is fairly easy but requires a gentle touch.

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10) Once you are satisfied with the strength of the weld, its time to clean things up. Gently heat up the edges...not enough to melt, but enough to make it soft and malleable. I had a 150 sand paper block, which works perfectly. Dap the area, then slowly, as the plastic cools, apply more force. After just one or two times of this, you can flatten out the plastic to look very nearly as if nothing has happened.

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11) Once you are done, take a cold wet rag to it...this will cool it and prevent it from moving any more. Obviously, the area is still wet and dirty, but you can get the idea. I continued to touch it up after I took this pic. It came out looking great.

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12) Now, its time to move onto the fronts, where the fog light door often hits. This was super easy, just figure out what needs to be moved. What we are going to do is heat up that area, then force an object onto it until it cools, permanently changing its shape. I just a couple BFH's, and it couldnt have been easier.

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13) And here is the final product! Don't let the "clean" area fool you, the plastic matches perfectly. I'm so happy with this mod, now no more RRRRRRRRRRRR as I turn....

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2003 Jeep Liberty Freedom Edition
3.7L 5-spd 4x4, Rusty's 2.5 in. coil lift
General Grabbers AT2's 245/75-16E on MOABS
EVIC installed, iPod wired, Hella 500's and Grilles
Mopar Bike Rack, Mopar Roof Rack, Black Widow Roof Basket w/ air deflector
Draw-Tite Hitch, Front Tint, Debadged on sides and front


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 Post subject:
PostPosted: Sun Dec 09, 2007 11:05 pm 
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excellent write up. thank you. now i hope that it dosent get lost in the pages, so when my time comes ill be able to find it. god knows the search engine wont find it. well done.


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 Post subject:
PostPosted: Mon Dec 10, 2007 7:05 am 
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Just make sure that you look in the Tech Article section.....I feel your pain about the search engine.....I can never seem to get it to do what I wanti, always seem to get results that are irrelevant. But glad you liked it.

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2003 Jeep Liberty Freedom Edition
3.7L 5-spd 4x4, Rusty's 2.5 in. coil lift
General Grabbers AT2's 245/75-16E on MOABS
EVIC installed, iPod wired, Hella 500's and Grilles
Mopar Bike Rack, Mopar Roof Rack, Black Widow Roof Basket w/ air deflector
Draw-Tite Hitch, Front Tint, Debadged on sides and front


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 Post subject:
PostPosted: Mon Dec 10, 2007 12:31 pm 
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I like the way you did that. Nice job! Sometimes I find if I post in a thread its much easier to find!

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 Post subject:
PostPosted: Mon Dec 10, 2007 1:09 pm 
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Yeah, you can find it easier under "My Posts"

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2003 Jeep Liberty Freedom Edition
3.7L 5-spd 4x4, Rusty's 2.5 in. coil lift
General Grabbers AT2's 245/75-16E on MOABS
EVIC installed, iPod wired, Hella 500's and Grilles
Mopar Bike Rack, Mopar Roof Rack, Black Widow Roof Basket w/ air deflector
Draw-Tite Hitch, Front Tint, Debadged on sides and front


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 Post subject:
PostPosted: Fri Jan 02, 2009 1:41 pm 
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Not to change the subject, csukoh78, how do you like those General Grabbers? And is that A Beer, or many Beers?

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 Post subject:
PostPosted: Fri Jan 02, 2009 3:40 pm 
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LIBERTYinLIBERTY wrote:
Not to change the subject, csukoh78, how do you like those General Grabbers? And is that A Beer, or many Beers?


he sold his KJ a little while back

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 Post subject:
PostPosted: Wed Jan 14, 2009 7:41 am 
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nice write up. i was wondering how to do this as i will be needing to very soon

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 Post subject: Re: HOW TO: Pound pinch welds, stop fender rubbing...
PostPosted: Sat Jun 03, 2017 9:23 am 
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This is a great how-to! I found another copy of this thread on JeepKJ that still has the pictures.
http://www.jeepkj.com/forum/f202/how-pound-pinch-welds-stop-fender-rubbing-34295/

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