engine block painting

ksungela

Member
I want to keep the surface of an aluminum engine block (LS3) from oxidizing and I want it to be silver. I can spray a coat or two of epoxy, but can anyone recommend a silver paint to use as the topcoat?
 

Slofut

Promoted Users
I used a toyota silver ss on the fiberglass side exhaust covers on my corvette. I think it's about right, most people think they're aluminum. I'll post a color code tomorrow when I get back to the shop. Btw... nothing really looks like bare alloy. And you may look into Sharkhyde, I've had really good results with it.
 

Chris_Hamilton

Trying to be the best me, I can be
How I've done it in the past Ken. Start bare metal, reduced epoxy, (to keep the millage down) then base, then Euro clear , I have also used a matte clear as topcoat. There are a lot of silver basecoats that would work depending on what look you are trying to achieve.

Slo is right, none of them will look like polished aluminum though. If that's the look you are after, you could try polishing the block if that's desired, then applying activated adhesion promoter, followed by clear. It works and holds up well. Thanks to Jim C. for turning me on to this.
 

ksungela

Member
Thanks guys. Will the rattle can paints offer a durable coating after the epoxy? maybe clear over that?
I just want to prevent the aluminum from oxidizing. How about matte clear directly over the bare block?
 

Barry

Paint Fanatic
Staff member
The aluminum stroker I did clean three times with 700 no sanding and 4 hours later spayed two full coats of epoxy gray.
Two days later used Deltron VW silver and
The next day cleared.

The car now has 8,000 + miles on it.
It was a new block just under 500 hp.

If an old block, I would probably scuff since aluminum.
 

Slofut

Promoted Users
Thanks guys. Will the rattle can paints offer a durable coating after the epoxy? maybe clear over that?
I just want to prevent the aluminum from oxidizing. How about matte clear directly over the bare block?
That's a bad place to risk anything rattle can, the do over would be a real bear.
 
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