Other Stuff > Misc / Open
Painting my engine a few questions
Sesman:
Yes, second that. Also, apply a mist coat and wait 20mins before applying the finish coat or two.
Oddjob:
--- Quote from: davidcumbria on October 17, 2023, 10:40:48 PM ---I just did mine with Simoniz and it worked pretty well. One thing I would do differently is to go over the cases and valve cover in the high visibility areas clean up the small dings and spatter on the case surfaces with wet and dry. They seem much more noticeable when the case is resprayed.
--- End quote ---
I'd agree with that. When you see the bare alloy of a crankcase you suddenly realise just how bad they are, a few hours spent just touching up small areas pays dividends in the end result.
I would add to make sure the cases are really clean as even the best paint job is spoiled if it doesn't stick.
DomP:
--- Quote from: davidcumbria on October 17, 2023, 10:40:48 PM ---I just did mine with Simoniz and it worked pretty well. One thing I would do differently is to go over the cases and valve cover in the high visibility areas clean up the small dings and spatter on the case surfaces with wet and dry. They seem much more noticeable when the case is resprayed.
--- End quote ---
Agreed, I wish I had done a bit of casting clean up so mine is an 'as Honda intended' respray.
H2Eric:
Any thoughts on preparing the surfaces first? Vapour blasting perhaps or a jolly good scrub with Brillo pad or something similar.
McCabe-Thiele (Ted):
I did not remove any casting marks but where the alloy had gone almost black when the paint was removed I used a Wet & Dry 180 to 400 Grit to remove the black surface so when painting the cases were pretty much bare alloy looking.
Areas that were near bolts or flanges I treated with either a small brass wire brush or a small brush wheel in my drill. I used a Thinners rag then brushed clean thinners onto the casing before painting the casings that I warmed with an electric fan heater - this seemed to help with avoiding runs. As others have said a light dusting first before applying a second & final coat - again applying it to a warn engine casing.
It is very tempting to try to cover with the first coat, I found a light dusting helped with avoiding runs. Only in exceptional areas like the engine mounting lug areas did I need to apply a light third layer.
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