08/25/2026
I Clear Coated This Aluminum Intake 27 Years Ago. Here’s How It Looks Today.
My last video about clear coating aluminum parts got a LOT of comments saying the clear would peel, yellow, trap oxidation — or even damage the alternator.
So instead of arguing about it, here’s the proof.
The intake manifold and water pump on my ’66 Impala were clear coated in 1999. The alternator was done about three years ago.
The key is doing it right: catalyzed automotive clear, proper surface prep, light coats, and proper flash time. I generally use this process on cast aluminum parts where the surface gives the clear some tooth to bite into.
You can argue the point, but the proof is in the pudding.
Have you ever clear coated cast aluminum parts?