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Blast & paint engine w/o disassembly?

  • Thread starter Thread starter Spikus
  • Start date Start date
Wow everybody, thanks for all the info! Although my engine is very low miles (4K), there is a lot of what I'd call corrosion on the aluminum. The engine still even has every one of those little rubber spacers between the fins! The local stripper said the corrosion actually pits the aluminum, and that walnut shells or soda won't remove it. He said it would require either bead or sand to remove that. True? I was thinking soda would be fine, especially since I'm going to paint it, not polish and clearcoat it. I plan flat black on the engine, and then all the covers will be powdercoated satin black to match the frame.
 
Spikus said:
Wow everybody, thanks for all the info! Although my engine is very low miles (4K), there is a lot of what I'd call corrosion on the aluminum. The engine still even has every one of those little rubber spacers between the fins! The local stripper said the corrosion actually pits the aluminum, and that walnut shells or soda won't remove it. He said it would require either bead or sand to remove that. True? I was thinking soda would be fine, especially since I'm going to paint it, not polish and clearcoat it. I plan flat black on the engine, and then all the covers will be powdercoated satin black to match the frame.
Click to expand...

paint will typically cover any corrosion unless yours was at the bottom of the atlantic.

Also silver is a tough paint to use and until it has been cured it will remain fairly soft regardless of color...
 
I used soda. Worked well enough. The paint hasn't come off yet.
 
Spikus said:
Don't worry, no silver for me. I hate shiny!
Click to expand...

if you have them vapour blasted, it will leave a dull/matt finish to the aluminium. if done by a decent blaster it will have rust inhibitors included in the blast media.
that way,the bare aluminium will not oxidize and leave a nice finish for years.

also, it leaves a good key finish to accept paint, if that is the route you decide to take.
 


I just used a water soluble degreaser, wire brush, long bristle scrub brush, and toothbrush. Painting an air cooled engine is a bitch. Several passes at different angles to get in the fins, and I STILL saw some holidays (bare spots) after I installed it. But in the end...

Good luck...
 
Spyder said:


I just used a water soluble degreaser, wire brush, long bristle scrub brush, and toothbrush. Painting an air cooled engine is a bitch. Several passes at different angles to get in the fins, and I STILL saw some holidays (bare spots) after I installed it. But in the end...

Good luck...
Click to expand...


Painting the black on mine tonight. What did you use to cut the fins?
 
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