What is a good paint to use for inside of cowling? Should it be high temp paint as in engine rattle can? Assuming gloss for wiping clean, wondering what others have used?
Two or three coats of PPG DP-48 LF primer (this is a white primer). This seals the inside, is easy to wipe clean of oil and such, and has help up well over 13 years. It also stands up to all but the most aggressive solvents.
Has anyone here tried coating FRP parts with a layer of aluminum using vacuum chemical vapor deposition (CVD)? I've wondered about this for a while...the possibilities for completely polished RVs might be interesting, not to mention the thermal reflectivity applications inside the cowl.
After sealing the inside with left over epoxy and slurry (micro beads & epoxy) I sprayed 2 coats of rattle can white appliance epoxy paint. Looks and feels great, but WARNING: I'm not flying yet.
We put intumescent paint & tedlar on our cowlings for heat resistance and oil penetration issues on our helicopters. I will be doing the same on my cowling.
I painted the inside of the cowl at the same time I did the outside. I used Jet-Glo, then covered the high heat areas with self adhesive reflective insulation. To keep the insulation from peeling up I carefully lined the edge or the insulation with High Heat RTV. 3 years and 500 hours still looks new.