what is the best way to remove under coating on my 70 chevelle. I want to paint the under body with por-15 and top coat it with por chassis black to get the right color.

Eastwood has some new stuff out just for that purpose. Can't remember what it's called though. www.eastwoodcompany.com (http://www.eastwoodcompany.com)

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Mark
1970 SS454 LS6 (nom)
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"Those who would sacrifice their freedom to achieve a measure of 'safety' deserve neither freedom nor safety."

It's called Undergone, and it's crap.

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Dan Orgill

if the car is not complete, i'd heat it w/ a propane or acetyline torch and scrape it off.
this, obviously isn't a good idea if the interior is in the car.

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Derek Kiefer
ss_chevelle_69@hotmail.com
Derek69SS = AOL instant messenger

69 Chevelle SS 396/325hp 3spd man., 12-bolt 3.31 gears lemans blue, no engine
69 Chevelle Malibu 350/250hp, TH350, 10-bolt 2.56 gears, dark cloisonne met. (purplish blue)
23 Ford Model T runabout, stock 20hp 4cyl (i know it's a ford but it's still fun to drive...slowly)

"If it was really worth doing, i would have already done it"

Don't bother with the Eastwood remover. I ordered some, but sent it back for a refund. It doesn't work!!

thanks guy's

I guess it's the propane torch. what about sand blast? I am going to do that anyway but thought it would be better to chemically remove the undercoat before blasting. will blasting remove undercoat effectively?

John

I used a bottle of mineral spirits. It stunk a bit, but it got the undercoating off.

I used an industrial grade sandblaster and it took the undercoating off beautifully.

is dipping the whole shell of the car in acid out of the question? it'll remove all the paint, undercoating, and rust. Car Craft did it to a 'cuda...never seen it done myself but i've heard good results. the only problem then is getting paint into every nook and cranny to keep it from rusting again.

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Derek Kiefer
ss_chevelle_69@hotmail.com
Derek69SS = AOL instant messenger

69 Chevelle SS 396/325hp 3spd man., 12-bolt 3.31 gears lemans blue, no engine
69 Chevelle Malibu 350/250hp, TH350, 10-bolt 2.56 gears, dark cloisonne met. (purplish blue)
23 Ford Model T runabout, stock 20hp 4cyl (i know it's a ford but it's still fun to drive...slowly)

"If it was really worth doing, i would have already done it"

John,

The torch will work but it's dangerous. The undercoating can ignite and flame up. It's happened to a good friend of mine.

I tried Eastwoods undergone, not good, however their cleaner, not the remover, works great once the under coating is off.

The safest way I found was a good heat gun. I heated a section at a time, 5" x 5", and with a flexible putty knife I scrapped it off. It came off like butter. It was so easy my wife did one wheel well for me.

A heat gun will cost about $30.00 - after the undercaoting is off, spray on EASTWOODS undergone Cleaner, wipe with papaer towels.

Hope this helps

Rich

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70 SS - L34
Member # 442
www.chevelles.com/showroom/richr1 (http://www.chevelles.com/showroom/richr1)

http://www.my70ss.com

[QUOTE]Originally posted by richr:
John,

The torch will work but it's dangerous. The undercoating can ignite and flame up. It's happened to a good friend of mine.

I tried Eastwoods undergone, not good, however their cleaner, not the remover, works great once the under coating is off.

The safest way I found was a good heat gun. I heated a section at a time, 5" x 5", and with a flexible putty knife I scrapped it off. It came off like butter. It was so easy my wife did one wheel well for me.

A heat gun will cost about $30.00 - after the undercaoting is off, spray on EASTWOODS undergone Cleaner, wipe with papaer towels.

Hope this helps

Rich

[/QUOTE

would this be an electronic tech type heat gun for melting heat shrink?

Cuz,
A real heatgun,bodyman style,[snap-on,mac-tools]will blister enamel,decals,undercoating ect.If you have the bucks,dip that puppy.You'll find out if there's any hod in her. The dipper will even prime it on site for you. Nothing is cleaner when done!

I've done several undercoating strip jobs and nothing works as good as the heat gun. No mess and very simple to scrape off even the thickest layer of goo with just a putty knife. Sweep up the large chunks and then use a solvent (100% mineral spirits works as good as anything) to take off the very last of the residue. You'll never regret buying the gun either, it comes in handy for all sorts of jobs (I just used mine this morning to heat up a frozen hydraulic coupler).

The gun is similar to an electronics heat gun except they come with a variety of tips for different heating patterns and typically move more air as well. One tip even has a built in shield for working near things that might be affected by the heat. You can get one for around $20 at any home improvement store. Mine's a Wagner and it's been through a couple of tile strippings around the house as well.