I was wondering something today. I have a friend who is cleaning his DET before he installs it. He's taking a wire brush to it to clean the outside of the block. It actually cleans up very nicely. A great improvement. My concern was that even after he spends all these hours cleaning the engine... giving it a nice bright silver finish, isn't it just going to oxidize like it did originally? Is there some sort of coating that he could spray to protect the finish? It's not hard to clean the block right now... it just takes time, but after he installs it, it'll be impossible to get it to look this nice again if it starts to oxidize.
On a side note, has anyone ever painted an SR20? I know this is common on American V8s... but I've never seen a painted SR motor.
Yeah, I thought about that... I was wondering if anyone has any experience using them on a modern aluminum block though? Does anyone know if they make a clear coat?
Well see, that's part of the problem. He wants the natural aluminum look, which is why he's scrubbing it with the brush. I just don't see how he's going to keep it clean though unless he coats it with something. Isn't it just going to re-oxidize (or whatever) back to how it originally looked?
He's looking for a nice bright silver finish... but not a polished silver finish. Hard to describe, but if you take a brush to a small section of your block you'll know what I mean. It's comes out nice and clean... bright... but not chrome looking.
I coated my engine with clear plastic (from a spray can)... got a little sticky first when the engine heated up but after some time it hardened... seems to work ok, no wonders though