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Re: 70 C3 engine Painting Questions
Make sure the important parts are covered, then use a wire wheel brush on a drill to get the remaining rust off. I suspect if it is just the surface rust that you have after hot tanking, etc, it will not cause any problems.
Personally, I have not heard of using primer on an engine. I wouldn't do it....not that someone hasn't done it before though.
I like this stuff call "plastic coat" chevrolet orange. But, you need to make sure it is correct orange for your year. Works well, and goes on easy and dries fast. Holds up nicely and is the right color for me.
Wipe the engine down with laqure thinner really good. I use paper towels and sort of blot it on so that it runs off, taking the oil with it.
If you have gaskets coming loose it is from poor technique. Chase the bolt holes and blow them out with compressed air. Then clean them with laqure thinner and blow them out again and again to get the oil and grease out of them. They have to be bone dry or the oil and grease will allow the bolts to come loose and the oil/grease to work the sealer and gasket off. Can't tell I like laqure thinner can you!? If you get it bone dry and let the engine sit a couple days after assembly, it should not leak. If you put the engine together and start it up hoping the heat will dry the sealant, you will be dissapointed. Let the sealant dry on its own. The longer, the better. Scrape the gasket surfaces with a utillity razor blade. You want bare metal. I use paper towels. When the white paper towel comes back clean after rubbing the surface, it is clean enough and I move on to something else. You get the idea. Just my way of doing things. In cold weather, you need to let the engine sit and dry. You can put a space heater on it if you like. It gets a little cold in my garage. Don't blow yourself up though!
Later, Terry -
Re: 70 C3 engine Painting Questions
Just had this same dilema on my restoration project (70 LT-1). I ended up using Eastman's Chevy Orange Engine paint kit, comes in a pint size and is a 2 part mix. Go's on great, flows/levels out well and is a very "tough" and hard finish....looks great and much better than anything I have ever used in a spray can....this works really well if you are not totally disassembling the engine either.Comment
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Re: 70 C3 engine Painting Questions
If you are going for originality, think thin. Chevrolet used very little paint on the engines, no primers. Expect to see paint absent behind the waterpump. Just enough to hide the bare cast iron, not to fill the rough surfacesDick WhittingtonComment
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Re: 70 C3 engine Painting Questions
Thanks for the info everyone.Comment
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