Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

 
 Reply to this topicStart new topic
> Powder Coating Trans Case?
quadracerx
post Feb 20 2014, 09:19 AM
Post #1


Member
**

Group: Members
Posts: 426
Joined: 3-July 06
From: WA
Member No.: 6,366
Region Association: Pacific Northwest
Couldn't find any threads for anyone who has successfully powder coated their transaxle case?

I'm also looking for a good side shift transaxle case to try coating in the Seattle area?

Any hints?

Thanks,

Steve
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
monkeyboy
post Feb 20 2014, 10:09 AM
Post #2


Senior Member
***

Group: Members
Posts: 808
Joined: 8-June 08
From: Los Angeles, Ca
Member No.: 9,147
Region Association: None
Powder coating is an insulator. You want the trans to shed heat.

It may not kill the trans, but it won't help cooling.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
skeates
post Feb 20 2014, 10:10 AM
Post #3


Member
**

Group: Members
Posts: 218
Joined: 28-February 05
From: Sacramento, ca
Member No.: 3,684
Region Association: Northern California
Why the powdercoat? They don't rust. Plust the coating seems like it would impead the heat transfer through the case which is what keeps the tranny from getting too hot when pushing it hard.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Matt Romanowski
post Feb 20 2014, 10:25 AM
Post #4


Senior Member
***

Group: Members
Posts: 878
Joined: 4-January 04
From: Manchester, NH
Member No.: 1,507
The racing guys have been doing a black teflon on the inside and out that makes the case look really good and gives some good benefits on the inside.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
quadracerx
post Feb 20 2014, 02:04 PM
Post #5


Member
**

Group: Members
Posts: 426
Joined: 3-July 06
From: WA
Member No.: 6,366
Region Association: Pacific Northwest
Thanks for your input guys... I was hoping that maybe Dr. Evil would chime in?

The "black thermal coating" sounds good.

Thanks again,

Steve
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Bartlett 914
post Feb 20 2014, 02:08 PM
Post #6


Advanced Member
****

Group: Members
Posts: 2,215
Joined: 30-August 05
From: South Elgin IL
Member No.: 4,707
Region Association: Upper MidWest
QUOTE(skeates @ Feb 20 2014, 11:10 AM) *

Why the powdercoat? They don't rust. Plust the coating seems like it would impead the heat transfer through the case which is what keeps the tranny from getting too hot when pushing it hard.

The Mag does rust. It just looks different. I have seen some pretty corroded cases. The best ones are the ones that leaked and had oil and grease all over them. Nice protective layer. There are lots of coatings. Techyl (sp?) another is Gibbs brand. Never used any of these. Lots of threads on this topic
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
skeates
post Feb 20 2014, 02:58 PM
Post #7


Member
**

Group: Members
Posts: 218
Joined: 28-February 05
From: Sacramento, ca
Member No.: 3,684
Region Association: Northern California
QUOTE(Bartlett 914 @ Feb 20 2014, 12:08 PM) *

QUOTE(skeates @ Feb 20 2014, 11:10 AM) *

Why the powdercoat? They don't rust. Plust the coating seems like it would impead the heat transfer through the case which is what keeps the tranny from getting too hot when pushing it hard.

The Mag does rust. It just looks different. I have seen some pretty corroded cases. The best ones are the ones that leaked and had oil and grease all over them. Nice protective layer. There are lots of coatings. Techyl (sp?) another is Gibbs brand. Never used any of these. Lots of threads on this topic


I guess you learn something new everyday if you're not careful! I was under the impression that the magnesium alloy used for these cases protected it from oxidization and corrosion from water. Seems like all of the grease and oil I've seen on mine (and other's) was due to failed gaskets and/or seals, not because the case had corroded to the point where it not longer sealed. Got any pics? I'd be interested to see what kind of damage this does...maybe we should all be paying more attention to our cases?

...never mind....I'm guessing most of them are already protected by the oil and grease covering them. (IMG:style_emoticons/default/happy11.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
rhodyguy
post Feb 20 2014, 03:24 PM
Post #8


Chimp Sanctuary NW. Check it out.
***************

Group: Members
Posts: 22,080
Joined: 2-March 03
From: Orion's Bell. The BELL!
Member No.: 378
Region Association: Galt's Gulch
my guess would be the coating would keep the heat IN and the cool away. clean it, be done with it, and save yourself a bunch of money.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
skeates
post Feb 20 2014, 03:35 PM
Post #9


Member
**

Group: Members
Posts: 218
Joined: 28-February 05
From: Sacramento, ca
Member No.: 3,684
Region Association: Northern California
My new found ignorance at Magnesium alloys has got me excited! Found these links that you might find useful:

http://forums.pelicanparts.com/porsche-911...protection.html

http://www.914world.com/bbs2/index.php?sho...9&hl=tectyl

http://www.keytometals.com/Article19.htm

I'm still not exactly sure how BIG of a problem case corrosion is, but I could see it being important if you've recently had your case media blasted. Based on the minor bit of research I did I the "Tectyl" product seems to be the clear winner.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Dr Evil
post Feb 21 2014, 01:41 AM
Post #10


Send me your transmission!
***************

Group: Members
Posts: 22,995
Joined: 21-November 03
From: Loveland, OH 45140
Member No.: 1,372
Region Association: MidAtlantic Region
Tectyl is shit. It wears out too soon. You have to reapply it.

Mag most definitely rusts, and if you live in the rust belt you know this.

I dont powder coat, i just use a good paint. Make sure it is very clean, of course. I have used Rustoleum out door spray paint with good results. It protects the metal and lasts longer than the tectyl stuff, and it is easy to find.

As for heat dissipation, armchair engineers like to pontificate on the matter, but the truth is that paint is not going to make or break your case when it comes to heat. Either leave the protective layer of oil and dirt on (seriously), or if you clean it off you must put something on it.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
0396
post Feb 21 2014, 11:00 AM
Post #11


Advanced Member
****

Group: Members
Posts: 2,046
Joined: 13-October 03
From: L.A. Calif
Member No.: 1,245
Region Association: Southern California
How about a shot of clear coat so it looks normal vs bring painted red, blue and or violet (IMG:style_emoticons/default/mellow.gif) (IMG:style_emoticons/default/mellow.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Rand
post Feb 21 2014, 11:25 AM
Post #12


Cross Member
*****

Group: Members
Posts: 7,409
Joined: 8-February 05
From: OR
Member No.: 3,573
Region Association: None
How about leave it the f alone? The tranny case is the last thing you should be worrying about on this car. Oy. Don't do for do's sake. Do for things that make sense.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Rand
post Feb 21 2014, 11:36 AM
Post #13


Cross Member
*****

Group: Members
Posts: 7,409
Joined: 8-February 05
From: OR
Member No.: 3,573
Region Association: None
QUOTE(Rand @ Feb 21 2014, 10:25 AM) *

How about leave it the f alone? The tranny case is the last thing you should be worrying about on this car. Oy. Don't do for do's sake. Do for things that make sense.

But then again, I never heard the reason for wanting to powder coat your tranny.....
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Mark Henry
post Feb 21 2014, 11:50 AM
Post #14


that's what I do!
***************

Group: Members
Posts: 20,065
Joined: 27-December 02
From: Port Hope, Ontario
Member No.: 26
Region Association: Canada
When is the last time you saw someone laying on the ground examining your trans?
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
KevinP
post Feb 21 2014, 12:13 PM
Post #15


Member
**

Group: Members
Posts: 205
Joined: 16-November 04
From: Orlando,FL
Member No.: 3,127
Did a Bug transaxle about 6 years ago for a buddy. I did it in a Dupont Teflon that I had left over from another job. Still looks good to date and he says he hasn't noticed anywhere its come off. I can't tell you anything about any cooling issues but I don't think it would be a problem. (IMG:style_emoticons/default/smile.gif)
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Dr Evil
post Feb 21 2014, 02:51 PM
Post #16


Send me your transmission!
***************

Group: Members
Posts: 22,995
Joined: 21-November 03
From: Loveland, OH 45140
Member No.: 1,372
Region Association: MidAtlantic Region
Paint is a protective measure. I dont care what color it is. Clear, black, purple. It is a barrier to oxidation that is necessary. Something, if not paint (which is very readily available, easy to apply, and cheap), needs to be put on the outside of the case. You dont just leave a clean case exposed to the elements and not expect erosion and failure.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
somd914
post Feb 21 2014, 02:59 PM
Post #17


Member
***

Group: Members
Posts: 1,171
Joined: 21-February 11
From: Southern Maryland
Member No.: 12,741
Region Association: MidAtlantic Region
My car spent its first 30 years in Connecticut. Hell hole, right long, sail panels, and a few smaller spots here or there looked like swiss cheese before restoration. I rebuilt the tranny two years ago at one of the Doc's tranny clinics. I have to say the tranny case is in great shape.

Sure, magnesium corrodes as does aluminum. But I'm not worried about the tranny or engine case - I'm leery of other body rust cropping up...
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
steuspeed
post Feb 22 2014, 02:35 PM
Post #18


Senior Member
***

Group: Members
Posts: 1,006
Joined: 12-July 11
From: Portland, Oregon
Member No.: 13,308
Region Association: Pacific Northwest
How about Alumablast paint from Eastwood? I started painting my Alfa transaxle with it and the finish is very nice. I can't say how well it lasts since it's still on jackstands.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
Dr Evil
post Feb 22 2014, 07:53 PM
Post #19


Send me your transmission!
***************

Group: Members
Posts: 22,995
Joined: 21-November 03
From: Loveland, OH 45140
Member No.: 1,372
Region Association: MidAtlantic Region
Sure. I also have used a product from the POR 15 people that looks like brushed Al and lasts.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
« Next Oldest · 914World Garage · Next Newest »
 

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 

Display Mode: Standard · Switch to: Linear+ · Switch to: Outline

Track this topic · Email this topic · Print this topic · Subscribe to this forum

- Lo-Fi Version Time is now: 14th May 2024 - 12:58 PM
Invision Power Board v9.1.4 © 2024  IPS, Inc.
All rights reserved 914World.com © since 2002
914World.com is the fastest growing online 914 community!
We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ...