undercoat removal

[valiant451]

What is the best way to remove undercoating? the last project I used a propanr torch and a scraper(pain in th a**)so i was wondering if anyone has used a chemical or high heat pressure washer

[eldubb440]

ive used a steam genny before,  paint stripper is much faster, there is no easy way.

[b569rr]

I used a torch. A buddy of mine said he sprayed the underside with deisel. What a mess / odor that must have made.

[fasttcars]

ya i like to get all the big chunks off with the torch first....and then final cleanup can be made with chemicals

[acpat]

eastwood makes a product that sofens it up so you can remove it without the torch

[Duster440]

I used a propane torch for the bulk layer and bought a gallon of Goof-Off at Home Depot. Put Goof-Off in a spray bottle to apply. It dissolved the residue immediately which I then wiped off with rags.

[automan63]

I used a propane torch for the bulk layer and bought a gallon of Goof-Off at Home Depot. Put Goof-Off in a spray bottle to apply. It dissolved the residue immediately which I then wiped off with rags.

I did a similar thing, but I used a torch and snapon 3 scraper set (curved ones and hooks ) then had the whole body sandblasted.. But goofoff sounds like a great idea.

[GTS225]

Personally, I don't care for the idea of an open flame around that stuff. Im using a decent heat gun and scrapers, then will sandblast.  Have already tried the process inside a front fenderwell, and seems to be just what's needed. (Now if only I could win the lotto so that I could retire, and have ample time to actually get more done on the car.)

Roger

[Crazy68Dart]

Number one thing is time.  I used a torch.  Probably not the healthiest idea, but it did the trick.  I am not sure if I am going to get it blasted or not, not to excited about sand in every nook and cranny for the next 30 years.

[jet-taz]

get your freinds to help but if you use a torch don't  use any chemicals

[Ryan (Strange246)]

If it's really hardened the Eastwood stuff doesnt work save your money, I used a good heat gun and scraper followed by mineral spirits....

Ryan

[jacks62440]

I did a 67 Barracuda, I tried solvent and it would'nt touch it. Seems it was pariffin based. I used a heat gun and scraper. My 62 Savoy was a regular tar based undercoat and I used the heat gun/Scraper again, then sand blasted it in my garage. "Man What a Mess"  Don't Do That !!!  Jack

[Westernstar]

I used a propane torch for the bulk layer and bought a gallon of Goof-Off at Home Depot. Put Goof-Off in a spray bottle to apply. It dissolved the residue immediately which I then wiped off with rags.

  That is the way to do it.

[eldubb440]

i just did my fenders. i used paint stripper, and sandblasted the jamb and headlite area. i ran a light grinder on the back side of the skin, and hand sanded the knooks and crannys with 80; then i coated them with rust bullet http://www.rust-bullet.com/  its designed to go over sound rust and bare metal. stuff works great. now i can do what ever i want to these.

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[littleman66]

will sand blast/media blast take the undercoating off?

[AA-slingshot]

yep.

[x360x64dart]

duster 440 your a genuius goof-off is awsome on that stuff even on 40 years of grease build up and road junk i can see metal on the bottom of my car.

[WRAITH]

I used a propane torch for the bulk layer and bought a gallon of Goof-Off at Home Depot. Put Goof-Off in a spray bottle to apply. It dissolved the residue immediately which I then wiped off with rags.

I just finnished removing the last couple of brackets and hard lines off the GT,... i'm gonna torch and scrape, thenI think I'll try that Goof-Off too.

Another satisfied customer

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[littleman66]

duster 440 your a genuius goof-off is awsome on that stuff even on 40 years of grease build up and road junk i can see metal on the bottom of my car.

is this the same as paint stripper?

[67bcuda]

i did it cold with a 3/4 wood chisel dull of coarse and a little elbow greese  the undercoating is old and brittle it chips off fast and easy faster than the torch method

[A13Dart]

Hey dubb, are you going to put anything over the rust bullit, or just leave them ?

[eldubb440]

Hey dubb, are you going to put anything over the rust bullit, or just leave them ?

gonna scratch em a little for adhesion, shoot some 3m paintable body shutz (with an undercoat gun) and topcoat body color. i do the outside of the inner fenders, the back side of the bumper filler/front valence, and rear wheelwells the same way. i try to keep the underbelly somewhat smooth, but some areas will get the shutz. everything body color.

[268darts]

I used a 4" angle grinder with a wire wheel. Never again. Friend used a heat gun with a scraper that worked really well.

[eldubb440]

Hey dubb, are you going to put anything over the rust bullit, or just leave them ?

gonna scratch em a little for adhesion, shoot some 3m paintable body shutz (with an undercoat gun) and topcoat body color. i do the outside of the inner fenders, the back side of the bumper filler/front valence, and rear wheelwells the same way. i try to keep the underbelly somewhat smooth, but some areas will get the shutz. everything body color.

A13, heres what i use. its rocker shutz, body shutz is a different product. http://www3.3m.com/catalog/us/en001/auto_marine_aero/automotive_aftermarket/node_GS6J8TCPY7gs/root_GST1T4S9TCgv/vroot_GSLPLPKL4Xge/bgel_HZKL4TB570bl/gvel_6DTWTJQPBBgl/theme_us_aad_3_0/command_AbcPageHandler/output_html

[littleman66]

i dont have any rustbullet. but i did just get some por-15. can i paint my fenders with it? then rough it up and use the 3m paintable coating, then body color?

[A13Dart]

Thanks dubb. I'm thinking that the rocker shutz is a good idea. Thick enough to protect the under side of the fender from small pebble and rock dings.

[eldubb440]

i dont have any rustbullet. but i did just get some por-15. can i paint my fenders with it? then rough it up and use the 3m paintable coating, then body color?

yup....i used to use a rust converter before i found rust bullet. as long as the por 15 sticks you be ok.  adheasion is the key......

[littleman66]

yup....i used to use a rust converter before i found rust bullet. as long as the por 15 sticks you be ok.  adheasion is the key......

also. has anyone had any problems with body color sticking too undercoating? does it resis stone chips better? what kind of paint?

[eldubb440]

also. has anyone had any problems with body color sticking too undercoating? does it resis stone chips better? what kind of paint?

thats why i removee the undercoating and replace it with the shutz material. make sure you get the paintable kind. i use the same paint as on the car, a quality urethane