Clean a pan before welding

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10-08-2012, 03:34 PM
Stu Cool

Clean a pan before welding

I just got a decent deal on a 200-4R transmission that I plan to use in my 54 Stude wagon. Part of the reason I got a good deal is the pan has a small crack in it that I believe I can weld to repair. Looking for suggestions on getting it clean and oil free so I can make a good weld. I plan to use my MIG welder.

thanks

Pat
10-08-2012, 03:49 PM
firebird77clone

Gasoline. Make sure It's dry before you weld.
10-08-2012, 04:11 PM
cffisher

I have used brake clean then a torch to heat it to get all residue off the metal
10-08-2012, 04:41 PM
Stu Cool

Actually having read the article linked below I know that brake clean and welding do not mix. That's why I was asking for suggestions. Read this article, I think we have discussed it here before.

Brake Cleaner = Phosgene Article

thanks

Pat
10-08-2012, 04:42 PM
Mike P

I WOULD STRONGLY RECOMMEND NOT USING BRAKE CLEANER.

Charlie's method would probably get rid of the residue, but I wouldn't take the chance.

It's been a while since this has been posted so it's probably worth doing again.

Brake Cleaner = Phosgene Article

EDIT: Looks like you beat me to it Stu.
10-08-2012, 04:48 PM
shine

dawn soap and water.
10-08-2012, 05:02 PM
cffisher

The Posgene gas is produced by Tri Cloretheline being heated. That cemical is no longer used in brake clean... Shine's recomendation will work just fine
10-08-2012, 05:38 PM
techinspector1

Seems to me that a torch would burn out anything but the parent metal and leave you good to go, but then, I've never welded on a pan.
10-08-2012, 11:41 PM
pat mccarthy

pans is what steel or aluminum welded ? i would not use a mig for alum .if its steel just wash with thinner is all is needed i cross the ends of the crack with to small welds going across the cracks on the ends if alum drill the ends of the crack then v groove the part do not use soap some soaps need to be cleaned out not a big deal on steel but cast can be porous so just use thinner and a stainless steel brush i only would TIG it pre heat would be a very good idea to about 300 if a small tig or mig if your going to try to weld it if aluminum
10-09-2012, 02:45 AM
sunsetdart

Wiping it first with lacquer thinner and then soap and water then blowing it dry. I would then use some 00 steel wool . You haven't said what the pan is made of, steel or aluminum. If it's steel it may have a coating on it that will need to be removed before welding and that will require more than steel wool.
10-09-2012, 02:50 AM
1gary

Might be a good time to consider a deep aftermarket pan for it.
10-09-2012, 11:06 AM
techinspector1

Quote:

Originally Posted by 1gary

Might be a good time to consider a deep aftermarket pan for it.

You think like I do Gary. Pans aren't that expensive.
10-09-2012, 05:01 PM
Stu Cool

Thanks everyone, it is a steel pan. Given the use planned for this car, the stock pan should be more than adequate.

Pat