Really like the look of black motors! I honestly don't think it would be bad unless you go crazy with the color, for example, you just need one coat for black, unless you want a clear on top of it. However, if you do like a candy red or lolipop color, it might overheat. Because there are 3-4 coats of powder for "fancy" coatings. But from the sound of it, paint is holding up great, so why take the whole motor apart to individually paint each part if you're getting the same result with just paint?!
I painted the cylinder on mine recently and couldnt find any high heat primer either. I used regular primer and high heat engine paint on top and it has held up good so far. Orange and black will look awsome. You should try and put small orange accents on the engine like the timing plugs and the fins on the head to tie it together a bit.
To give you an idea on how nasty aircraft striper is, we use aluminum tape on all seams since it will eat the sealant. use laquer thinner and a stiff brush, factory paint is not that hard to get off. Then go get a good tape and mask off the oil line fitting, intake and any thing you dont want painted.
Another question I had was... when i paint the engine do I wanna get in installed and started up asap so the paint can cure or does it matter? I don't think ill be getting the frame done for a few more weeks. ( funds r low lol) so if i painted it now it would just be sitting on my work bench.
You just need to make sure all coats of paint are on with in 1 hr or wait seven days to do the do the others. If your in no hurry to get the engine done then I would primer it then wait a week to shoot the color.
And yes Air Craft Remover is very nasty, but it works well. I did my engine while it was all appart with no rubber seals or gaskets installed.
Well this is wat i ended up with as my colors. I ended up getting header ceramic paint as my base coat for primer. I didn't wanna not use anything but I didn't want to use stuff that wasn't heat resist due to the fact it may bubble under the paint. Hope I'm right.