Transmission Case Protection, success |
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Transmission Case Protection, success |
McMark |
Mar 19 2018, 07:52 AM
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#1
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914 Freak! Group: Retired Admin Posts: 20,179 Joined: 13-March 03 From: Grand Rapids, MI Member No.: 419 Region Association: None |
What to do to protect a transmission case after cleaning has been a recurring topic over the years. Originally the transmission were covered with a 'cosmoline' like product which is a mix of wax and oil to protect the metal from corrosion. These products are still available and some people are recoating trans cases with this stuff to good success.
But that coating remains sticky/tacky over time. I don't like that. So I've been trying to go the epoxy primer route. These primers form a chemically hardened coating that'll last for years, isn't sticky, and looks great. This blend of epoxy primer I used on the latest 915 transmission build is pretty much perfect color match and what I'm calling Magnesium Grey. The idea was to coat the case with something that essentially looks as close as possible to bare, oxidized magnesium. The only problem with it, is that they can't mix anything less than a gallon. (IMG:style_emoticons/default/blink.gif) So anybody need their transmission case painted? I'd love to run through this gallon ASAP. |
maf914 |
Mar 20 2018, 05:44 AM
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#2
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Not a Guru! Group: Members Posts: 3,049 Joined: 30-April 03 From: Central Florida Member No.: 632 Region Association: None |
Mark, How did you clean the tranny case before spraying?
Degrease, wire brush, blast, etc.? After all the prep I would hate to see the paint or coating peel off. |
Mblizzard |
Mar 20 2018, 06:40 AM
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#3
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Advanced Member Group: Members Posts: 3,033 Joined: 28-January 13 From: Knoxville Tn Member No.: 15,438 Region Association: South East States |
Mark, How did you clean the tranny case before spraying? Degrease, wire brush, blast, etc.? After all the prep I would hate to see the paint or coating peel off. There is another thread on cleaning the trans while assembled. I think your choices are more limited when it is assembled. For me, I would never blast unless it was a soft media (walnut shells) and even then, I am leery of removing all abrasive from an environment where residual abrasive can result is massive damage. For an assembled case some pressure wash but I have never been a fan of that. For me, I set the trans in front of an electric heater for many hours and get it warm. Next use degreaser of choice. Me I like Awesome available at Dollar General stores. Dirt cheap and works. From here it takes some elbow grease. I got a large coarse plastic bristle brush for my drill and used it. Rinse with light spray of water. Reapply cleaner and repeat until satisfied. After that I use a fine brass bristle brush for the drill to clean off any difficult materials and to go over the whole case. Make sure you get all brass brush not just brass coated steel wire. As an example here is an engine case I did with the brass brush. No Paint at all! Of course there are many more difficult spots to clean on the trans than the case so getting it to this point would take a long time. So I would likely do the clean and then paint. I do a final rinse with a mild solvent like alcohol or acetone. |
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