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- #61
I have had many turbine housings coated over the years, most have been ceramic coated. The paint on coatings do not seem to last.
If you are asking about coating the compressor housing too I have seen no improvement in performance from coating that. You would see much more benefit moving the air filter to a cooler spot on the engine bay or making the first set-up fit with a belt that is in-between the too short one and one you have now.
I look at coating the exhaust manifold and turbine as purely cosmetic things. There is no appreciable difference in under hood temps or performance. I have had much better thermal reduction results using high quality turbine housing dippers and down pipe wraps.
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oh yeah, i totally understand it would be purely for aesthetic reasons

I tried my best to make that toyota air cleaner housing work but unless they start making half sizes in belts, it just wont work. there just wasn't enough adjustment room there. I do want to explore other options but i think fabrication is the next logical step.