Painting Transmission

Posted By: RoadRunner73

Painting Transmission - 06/27/14 07:49 PM

Going to clean up my tranny and paint it with the same paint as my engine block, anything I should know before I go spraying? Anywhere I should cover up?

Posted By: 340SHORTY

Re: Painting Transmission - 06/27/14 07:56 PM

I personally wouldnt paint it after cleaning. Paint seals the aluminimum and will make the trans retain some heat. As we know, they wernt painted when new.

Posted By: RoadRunner73

Re: Painting Transmission - 06/27/14 08:03 PM

Right, unfortunately my case wasn't cleaned when it was rebuilt and the person who had it before me had it primered, should I try to clean it off the best I can - I'd like it to look good obviously.

Posted By: burdar

Re: Painting Transmission - 06/27/14 08:13 PM

I'm going to paint mine too. It's not a stock restoration so I can do what ever I want. I will be removing the tail shaft bolts, pan and valve body before spraying. That way I can refinish those in another color. I don't want it to look like I didn't care and just sprayed everything all at once.

Posted By: jcc

Re: Painting Transmission - 06/27/14 08:17 PM

Quote:

I personally wouldnt paint it after cleaning. Paint seals the aluminimum and will make the trans retain some heat. As we know, they wernt painted when new.

I'll respect your opinion, however, not so sure about the correctness of the term "seal", however a case might be made it insulates it, how much, I suspect not much, I suspect a coat of oil/grease/grime might insulate it more, and being painted would be easier to clean, and while we are splitting hairs, a black color will radiate more heat then a lighter color, and lighter color will reflect more heat from hotter nearby surfaces, all to the point, can't believe the OP would ever notice any difference no matter what he chooses.

Posted By: RoadRunner73

Re: Painting Transmission - 06/27/14 08:23 PM

I couldnt imagine it would make much difference, I've seen others also have them painted, even though I do realize they didnt come painted. Figured it would look better than the way it is up against my bright painted engine! Maybe the better question is, has anyone out there ever had problems because of painting theirs?

Posted By: John_Kunkel

Re: Painting Transmission - 06/27/14 10:26 PM

Sealing the pores of the aluminum casting has the benefit of keeping grime from penetrating the pores...makes it easier to keep clean. I doubt if heat retention is an issue, radiators are painted.

Posted By: Dcuda69

Re: Painting Transmission - 06/27/14 11:11 PM

I worked in a trans shop for a few years. Every trans we did got painted with something very similar to this.

http://www.eastwood.com/ew-aluma-blast-set.html

Never once did we have one come back due to heat caused by painting the case

Posted By: Sxrxrnr

Re: Painting Transmission - 06/28/14 08:53 AM

Same color as engine? Hope your engine is silver or aluminum.

Posted By: Spaceman Spiff

Re: Painting Transmission - 06/28/14 01:46 PM

Quote:

I personally wouldnt paint it after cleaning. Paint seals the aluminimum and will make the trans retain some heat. As we know, they wernt painted when new.

They weren't painted new due to time and COST.

Posted By: screamindriver

Re: Painting Transmission - 06/28/14 06:50 PM

I've never heard of anyone blaming paint for a trans problem...If it's already been primed then you should'nt have much to do other then scrub it with a mild cleaner and a scotchbrite pad for adhesion... Choose whatever color you like but use an engine paint for the long-term durability...Good Luck..

Posted By: Spaceman Spiff

Re: Painting Transmission - 06/29/14 04:56 PM

Quote:

I personally wouldnt paint it after cleaning. Paint seals the aluminimum and will make the trans retain some heat. As we know, they wernt painted when new.

Then why would places that sell performance transmission powder coat them?

Posted By: John_Kunkel

Re: Painting Transmission - 06/29/14 07:33 PM

Pro shops coat the trans to cover up the stains in the aluminum that won't come out with normal cleaning...nobody wants to pay big bucks for an ugly transmission even if it's only cosmetic.

Posted By: dogdays

Re: Painting Transmission - 06/30/14 07:14 PM

Plus a shiny black transmission looks BOSS.

R.

Posted By: RoadRunner73

Re: Painting Transmission - 06/30/14 11:12 PM

I was going to use the same engine paint hemi orange on it, I KNOW, it won't look original.

Posted By: dogdays

Re: Painting Transmission - 07/01/14 06:24 PM

Good for you.
Dare to be different!

R.