any tips on cleaning transmision Options

[wes]

I have pulled the transmission on my parts car removed lose oil and grime with Gunk spray let it sit then took it to the car wash tried cleaning it up with the engine cleaner at the car wash, started to scrape the (IMG:style_emoticons/default/screwy.gif) build up mess with plastic scraper and much of it just wont come off well its certainly much better but I want it nice and clean looking like my new engine any tips on cleaning years of baked on gunk?

[injunmort]

I am by no means authority, but it is my understanding that the transmission case is magnesium. based on that assumption cleaning it with whatever not corrosive means is fine, but once that is done, it needs to be painted or otherwise coated. mag oxidises and becomes brittle in no time if not protected from the atmosphere. on my matchless g50 the cases and hubs were mag and had an aluminized gold paint that was on any of the magnesium parts. it used to turn green overnight without a barrier.

[gopack]

I am by no means authority, but it is my understanding that the transmission case is magnesium. based on that assumption cleaning it with whatever not corrosive means is fine, but once that is done, it needs to be painted or otherwise coated. mag oxidises and becomes brittle in no time if not protected from the atmosphere. on my matchless g50 the cases and hubs were mag and had an aluminized gold paint that was on any of the magnesium parts. it used to turn green overnight without a barrier.

"A clean, unprotected magnesium alloy surface exposed to indoor or outdoor atmospheres free from salt spray will develop a gray film that protects the metal from corrosion while causing only negligible losses in mechanical properties."

answer from "corrosion-doctors.org"

So basically, Magnesium is like aluminum, it forms a protective layer of oxidation on the surface, and nothing else is needed...as long as ther is no salt present to foster continued corrosion!