I had my cam cover coated and don't like the colour.What's the best way to remove it-can it be acid dipped(alloy)to clean it off?

Plastic blasting. Like sand blasting, but with plastic particals which are easier on the alloy.

I work for a Galvanizers, so dont let anyone suggest dipping in acid to clean, it will kill the alloy. Only dip steel

I design Aluminium Form Tooling (made out of tool steel) and my customers use Caustic soda to disolve the ally which is left in them after they come out of the presses. Not recommended. We use bead blasters in work to clean the tools after they have been heat treated and if a heavy grade of grit is used, it will punch a hole through the ally You could try using acetone ?.

I had the cover blasted originally and the muppet firm that did it,didn't realsise they had to mask off the inside of it:rolleyes:.The result was a cam cover full of sand and a very pi**ed of me.I had to take it back 3 times to get them to clean it and still eneded up finishing it off myself with an airgun.Their excuse-"Well we're not engine builders,so how did we know it needed masking?"
As you might imagine,I'm reluctant to have it blasted again.

It's also a total nightmare sand blasting powder coating in my experience. It takes ages, well it did when I used to do it.

Powder coat is awful stuff, I have restored a few old bikes, and one of them had had the frame powder coated previously. I had to remove it with a wire brush and blow lamp, before it was blasted. The blasting guy said otherwise he would have to use a real coarse grit and it would probably damage the frame. IMHO I would never powder coat anything, just get it properly painted using 2 pack paint.

Hindsight's great ain't it;)?I'll see if anyone wants to swap it for a standard one.