CRG Discussion Forum
Welcome, Guest. Please login or register.
Did you miss your activation email?
November 26, 2014, 09:56:10 PM

Login with username, password and session length
Search:     Advanced search
Welcome to the CRG Discussion Forum!
Forum registration problems: Make sure you enter your email correctly and you check your spam box first. *Then* email KurtS2@gmail for help.
106619 Posts in 12428 Topics by 4790 Members
Latest Member: gmein
* Home Help Search Login Register
+  CRG Discussion Forum
|-+  Camaro Research Group Discussion
| |-+  Restoration
| | |-+  Muncie cleaning
« previous next »
Pages: [1] Print
Author Topic: Muncie cleaning  (Read 856 times)
BillOhio
Member
***
Posts: 380



View Profile WWW Email
« on: March 18, 2014, 08:19:53 PM »

Started cleaning gunk off my transmission today. Main case is pretty nice but the tail shaft has a different look to it. I was just going to clean it but I do have some walnut hulls I could run thru the blaster. What have you seen done that works and maybe what I have is normal? Front was covered in oil
Logged

1969 Z28, Burgandy, numbers matching, 12,900 miles
1967 Plymouth GTX Hemi, 4 speed, dana
1961 Chrysler 300G convertible
ko-lek-tor
Hero Member
*****
Posts: 587



View Profile
« Reply #1 on: March 18, 2014, 08:31:53 PM »

Bill, I had a gnarly looking smog pump that was stained and had that white chalky corroded appearance. I used a solution that is made to clean a/c A coils. It is an alkali, I believe. Will have to look at it tomorrow and see what the ingredient is. It foams up and has to be rinsed thoroughly, but it did the pump justice IMO. I don't have any before pics. I get a chance, I will take a pic. Just an idea.
Logged

Putting you First...Keeps me First. Talent on loan from God. Helping the hobbyist and exposing the fraud
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
1969 SS 350 coupe LeMans Blue 713 bought in 79
1969 307 4spd. coupe Daytona Yellow 711 bought in 85
68camaroz28
Hero Member
*****
Posts: 995



View Profile Email
« Reply #2 on: March 18, 2014, 08:41:27 PM »

I had some alum. trailer cleaner I used on some parts and it worked pretty good to remove some stains but after the bath I glass beaded between 15-20 PSI. Was slow going due to the low pressure but the alum skin was not altered and it gave the part a really fresh new look.. Got the idea for the low PSI from one of JohnZ's comments. Again, slow going but it worked well and only took time and not $$ as I already had the alum. trailer cleaner (mixed so many parts of cleaner to so many parts of water). Use distilled water!
Logged

Chick
68 Z/28 NOR 01B Orig motor/trans/rear
69 Z/28 NOR 07A Orig Block & GM Cross-ram/carbs
69 L34 Rest. Nova Father/Son Car
69 L78 Surv Nova Purch 4/69 31K miles
67 L89 Corv Tribute
68 Corv 427/400 Orig motor
07 Corv Z06
R 68Z build- http://www.camaros.net/forums/showthread.php?t=182584
BillOhio
Member
***
Posts: 380



View Profile WWW Email
« Reply #3 on: March 18, 2014, 09:27:03 PM »

I think the oil that was all over the main case kept it nice. Wasn't any on the back. The back is also alot rougher casting. I have seen the trailer wash. I might have some aluminum prep stuff for painting too.. 
Logged

1969 Z28, Burgandy, numbers matching, 12,900 miles
1967 Plymouth GTX Hemi, 4 speed, dana
1961 Chrysler 300G convertible
z28z11
Hero Member
*****
Posts: 637


View Profile
« Reply #4 on: March 18, 2014, 10:02:02 PM »

I'd stick with chemical cleaning. Carb cleaner and brake cleaner both work acceptably: I used a combination of brake cleaner (dip bucket) and Comet Cleanser on my valve covers/intake during a rebuild in '75 - came out pretty close to the original appearance IMO. Glass beading always leaves a tell tale look to it -

Steve
Logged

1968 Z28 BRG/W
1969 Z28 X77 LeMans/W
1969 X66 L78 Cortez/BVT
1969 Z11 L48
firstgenaddict
Hero Member
*****
Posts: 1258



View Profile WWW
« Reply #5 on: March 21, 2014, 01:49:21 PM »

The tail shaft housing should have the same finish as the Z28 valve covers or the steering box cover (die cast aluminum) the main case should look like a Z28 aluminum intake (it was pour cast in a green sand mold then into a vibratory tumbler with steel shot to remove the casting sand).



These are cast aluminum seat stands which are fresh out of the vibratory tumbler loaded with steel shot.




Logged

James
Collectin' Camaro's since "Only Rednecks drove them"
 
Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://picasaweb.google.com/112392262205377424364/1969_Z28_Restoration
BillOhio
Member
***
Posts: 380



View Profile WWW Email
« Reply #6 on: March 21, 2014, 08:21:11 PM »

Thanks James. Should the main case be a little brighter then?
Logged

1969 Z28, Burgandy, numbers matching, 12,900 miles
1967 Plymouth GTX Hemi, 4 speed, dana
1961 Chrysler 300G convertible
firstgenaddict
Hero Member
*****
Posts: 1258



View Profile WWW
« Reply #7 on: March 21, 2014, 08:38:26 PM »

Yes, anything die cast will oxidize quickly, the skin created through the vibratory tumbler with steel shot appears to slow the oxidation process and slightly polish the casting.

 
The appearance of your main case is pretty nice, if you degrease it then use carb clener and a tooth brush it will look great, the tail shaft may require something more powerful (foaming oven cleaner?)  as it appears to be heavily oxidized.
If you use oven cleaner tape off the rest of the trans as it is very powerful and you don't want to mess up your cast finish.
Oven cleaner will also take the polished look off a set of aluminum valve covers.
Logged

James
Collectin' Camaro's since "Only Rednecks drove them"
 
Check out the Black 69 RS/Z28 45k mile Survivor and the Lemans Blue 69 Z 10D frame off...
https://picasaweb.google.com/112392262205377424364/1969_Z28_Restoration
BillOhio
Member
***
Posts: 380



View Profile WWW Email
« Reply #8 on: March 22, 2014, 09:51:57 AM »

Thanks James. The main case was covered in oil film. Was disgusting but probably helped keep it nice
Logged

1969 Z28, Burgandy, numbers matching, 12,900 miles
1967 Plymouth GTX Hemi, 4 speed, dana
1961 Chrysler 300G convertible
ko-lek-tor
Hero Member
*****
Posts: 587



View Profile
« Reply #9 on: March 24, 2014, 02:42:09 PM »

Went out to the shop just for you Bill. I am sick today and all weekend. Anyway, that cleaner I used is called Nu-Brite. Here is a link:  http://www.nucalgon.com/products/coil-cleaners/condensers/nu-brite  Bottle says,"contains Sodium Hydroxide".
Logged

Putting you First...Keeps me First. Talent on loan from God. Helping the hobbyist and exposing the fraud
1969 SS/RS 396 coupe Hugger Orange X22 712 bought in 79
1969 SS 350 coupe LeMans Blue 713 bought in 79
1969 307 4spd. coupe Daytona Yellow 711 bought in 85
BillOhio
Member
***
Posts: 380



View Profile WWW Email
« Reply #10 on: March 24, 2014, 07:37:44 PM »

You guys are great help! Now if I didn't have to get tractors ready to plant I could get something done!
Get to feeling better too. If you like basketball was a good weekend to be shut in. Some great games so far
Logged

1969 Z28, Burgandy, numbers matching, 12,900 miles
1967 Plymouth GTX Hemi, 4 speed, dana
1961 Chrysler 300G convertible
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.087 seconds with 18 queries.