924Board.org

[Project-924-1979]

Hello everyone,

I'm currently in the middle of a transmission rebuild. which is costing a fortune, So i want transmission casing to show that it has undergone a rebuild of a qouple of thousand euro's, but I'm having a hard time cleaning it up.

I've been at it with paint thinners to remove the old paint the PO put on it. Then I spend a day with a dremel and a selection of wire brushes trying to clean it up, but I'm not fully satisfied. aluminium oxide that has build up over the years is quite hard to get of.

Do you guys have any suggestions?











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Restoring a late 1979 Porsche 924. This is my first car and my first attempt at restoring a car.
Learning a lot along the way and doing as much as I can myself.

[Cedric]

I used dry ice blasting for my box, nice since it doesnt leave any residue, vapor blasting gives a really nice finish aswell
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1980 924 Turbo
www.instagram.com/garagecedric/

[Fifty50Plus]

Vapor honing (vapor blasting) cleans up the aluminum and makes it look like it just came out of the foundry. DO NOT glass bead it.
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1979 924 NA race car H-Prod SCCA
1982 924 NA race car - Sold
1981 924 Turbo sold
1982 924 Turbo sold
1972 911 E race car - traded for Cayenne Diesel
1975 914 1.8 Building for H-Prod SCCA

[peterld]

As above, vapour blasting and then clear coat for a lasting finish.
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80/81 932/8 ROW

[safe]

vapor blasting (glass beads in water) gets aluminum really really nice. clean and sort of polished. Done it to parts on my BMW K100.

It doesn't embed the blasting media in the material, BUT, it gets into every corner and crevasse like crazy.

I would never do it on anything that holds oil. if I would, I would bolt it together so the water would only touch the exterior parts and still clean very well.
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/Magnus, Stockholm Sweden
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Porsche 924 -79 NA, EFI and Turbo.
Porsche 931 -79
Porsche 911 -77, 3.2 Targa
Porsche 911 -69, 3.6, Coupe