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Tried something new to get undercoating off

ga66mopar

ga66mopar

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The last time I took the undercoating off of the bottom of a mopar I used a propane torch and it was a pain in the butt. Last night I tried a new Makita heat gun and I have to say it works great. After about a minute of heating up an area the undercoating was easy to scrape off. Here’s the one I have. Thought I would pass this on.

http://www.amazon.com/Milwaukee-897...heit-Temperature/dp/B00004TI25/ref=pd_cp_hi_1
 
Using fire sucks.....heat gun is a good way to do that and is the way I did my car.
 
Heat Gun is the safest way, also Fire can warp the medal if done wrong. You can use Gas and a scraper as well although not very safe either however it does work.
 
I have been thinking about trying a steam pressure washer. My local rent all place has a pressure washer that has heated water. They tell me the water can be heated up to steam. It has a propane heat exchanger. I'm wondering if steam under pressure would take off the undercoating? Sure would be nice to have the car on a rotisserie and turn it on its side and use a heated pressure washer to blow off the undercoating. One of my lifes mission is to found a easy way to take off the undercoating off of mopars.
 
Just a plain pressure washer will work in some cases. I knocked some using a local car wash but having the car up on ramps just wasn't high enough to do much good but it did take some of it off. I was mainly trying to clean the under side when I was still driving it and tried to see if it would take any off. Once you get under the coating, it starts peeling off in most cases.
 
I use an ingersol rand air needle gun...does the trick! In most cases it pops the undercoating off just by the vibration, if not..pushes it off with the needles. I'll have to look into the heat gun idea next go around. Thanks for the tip.
 
I also used the needle gun method. Most of it did fall off from the vibration, does not damage the metal either. I also used a air hammer with a blunt bit that I made. I think I did the whole underside in about 3 hours on a rotiserie. I use the needle gun for alot of stuff, works good to get heavy caked rust off before sandblasting also, saves alot of time and sand cost.
 
Undercoating removal

I researched and listened to everyone's advice and then put the car on my rotisserie and started. I bought a Wurth seam sealer remover with the round "Hooked" wire wheel and got a half-dozen propane cylinders and went to work. The undercoating around the transmission where the fluid leaked out and was slung onto the tunnel came off in a flash! Soaking in ATF for 44 years works! The large open areas came off alternately well with the 1" wide scraper and the Wurth air tool. The tool ran me about $350.00, but I needed it for other work anyway, so I wouldn't buy it for just this purpose. When all the undercoating was removed, I wet everything down with "Gunk" Engine degreaser and let it soak overnight and then pressure washed it. To finish, I sprayed the whole undercarriage with "Super Purple" degreaser from Menards and then pressure washed it again. Lots of work, but I'm glad the undercoating was on the car, or I'd be replacing the floor pans! Suck it-up and get to work. It'll be done before you know it! Check out the pics.
 

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That really looks nice. I can't wait to get mine looking that good.


zyzzyx said:
I researched and listened to everyone's advice and then put the car on my rotisserie and started. I bought a Wurth seam sealer remover with the round "Hooked" wire wheel and got a half-dozen propane cylinders and went to work. The undercoating around the transmission where the fluid leaked out and was slung onto the tunnel came off in a flash! Soaking in ATF for 44 years works! The large open areas came off alternately well with the 1" wide scraper and the Wurth air tool. The tool ran me about $350.00, but I needed it for other work anyway, so I wouldn't buy it for just this purpose. When all the undercoating was removed, I wet everything down with "Gunk" Engine degreaser and let it soak overnight and then pressure washed it. To finish, I sprayed the whole undercarriage with "Super Purple" degreaser from Menards and then pressure washed it again. Lots of work, but I'm glad the undercoating was on the car, or I'd be replacing the floor pans! Suck it-up and get to work. It'll be done before you know it! Check out the pics.
Click to expand...
 
removing undercoat

ga66mopar said:
The last time I took the undercoating off of the bottom of a mopar I used a propane torch and it was a pain in the butt. Last night I tried a new Makita heat gun and I have to say it works great. After about a minute of heating up an area the undercoating was easy to scrape off. Here’s the one I have. Thought I would pass this on.

http://www.amazon.com/Milwaukee-897...heit-Temperature/dp/B00004TI25/ref=pd_cp_hi_1
Click to expand...

I removed the undercoat from my 66 satellite using kerosene, a parts brush and a putty knife. I used a plastic tray usually put under a washing machine to catch the drips. It wasn't easy but worked pretty well.
 
Undercoating

O.K., so it's all off now and I'm glad I don't have to mess with it anymore. I also had the whole bottom media blasted and I used a DuPont epoxy primer. Then I shot on the color immediately. I will own this car for a long time, and will be proud of the work I did to make it look better than it did when it rolled of the line at Lynch Road!
 

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The heat gun works good.
Also if you saturate the undercoat and let it sit for a day it will come off easier.
PB blaster penetrating oil works well to soak it. ATF works too but not as fast.
 
You did a nice job. Looking at your pictures is motivational .

zyzzyx said:
O.K., so it's all off now and I'm glad I don't have to mess with it anymore. I also had the whole bottom media blasted and I used a DuPont epoxy primer. Then I shot on the color immediately. I will own this car for a long time, and will be proud of the work I did to make it look better than it did when it rolled of the line at Lynch Road!
Click to expand...
 
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