Engine Painting

[Bob Wild]

Hi All

I have 73 Roadster that I removed the Engine form last year and repainted back to the factory original Color. After 200 miles the paint has started to burn / turn color on the intake manifold. (Not Happy) I purchased the spray bomb from one of the local Speed shops that asured me that it was the correct paint for the job. I'm stuck removing the engine again and repainting it, but I don't what to use the spray bomb routine. Should I have the local body shop paint the engine, Primed, and painted. Would the local body shop carry the correct paint? Where can I order the correct paint?

Any help or suggestions are appreciated.

Thanks
Rookie Bob

[Bill Stephenson]

Re: Engine Painting

Bob,

-----I think you may want more than any engine paint can supply.If you drive em,they are going to burn the paint around the choke stove area of the intake.Thats exaust heat up there ya know!
-----Those trailer queens you see with perfect engine paint may never have been all the way up to operating temperature.You could have blocked off the passages into the intake and saved yourself all this"anguish",but that would have left your choke ineffective.I dont know that you can have it both ways.
-----With that said the next poster will probably tell you about some bionic new chevy orange paint or new method of application that will stay perfect into the next century,long after you are gone.
-----Also wondered why you couldnt spot it in with more of the same paint prior to any show.I wouldnt have thought it would necessitate yanking the engine for a minor touch-up thats mostly covered by the air-cleaner.............Bill S

[Bill Stephenson]

Re: Engine Painting

Bob,

-----I think you may want more than any engine paint can supply.If you drive em,they are going to burn the paint around the choke stove area of the intake.Thats exaust heat up there ya know!
-----Those trailer queens you see with perfect engine paint may never have been all the way up to operating temperature.You could have blocked off the passages into the intake and saved yourself all this"anguish",but that would have left your choke ineffective.I dont know that you can have it both ways.
-----With that said the next poster will probably tell you about some bionic new chevy orange paint or new method of application that will stay perfect into the next century,long after you are gone.
-----Also wondered why you couldnt spot it in with more of the same paint prior to any show.I wouldnt have thought it would necessitate yanking the engine for a minor touch-up thats mostly covered by the air-cleaner.............Bill S

[Christopher R.]

Re: Engine Painting

The paint will burn there. It's where exhaust gases pass under the carb in order to help with the operation of the choke. You could block off that passage in the intake manifold, but then you'd have to fool around with your choke to get it to turn off when it should.

I would think that a judge would want to see burned paint there. That's original! It's supposed to be that way. Wouldn't this condition be the same as rusty exhaust manifolds?

(You realize that if you told someone not on this list that you were thinking of pulling an engine that you just installed 200 miles ago because the paint on the intake manifold turned color like it was supposed to that they'd have you committed. Please do not take this as an insult. My comment is directed at myself who sympathysizes with you.)

[Christopher R.]

Re: Engine Painting

The paint will burn there. It's where exhaust gases pass under the carb in order to help with the operation of the choke. You could block off that passage in the intake manifold, but then you'd have to fool around with your choke to get it to turn off when it should.

I would think that a judge would want to see burned paint there. That's original! It's supposed to be that way. Wouldn't this condition be the same as rusty exhaust manifolds?

(You realize that if you told someone not on this list that you were thinking of pulling an engine that you just installed 200 miles ago because the paint on the intake manifold turned color like it was supposed to that they'd have you committed. Please do not take this as an insult. My comment is directed at myself who sympathysizes with you.)

[Wayne K.]

Re: Engine Painting

Bob,

I would go with Bill's idea and just do a touch up. The spray bombs are designed to be used 10-12 inches away from surface being painted. After cleaning the area you need to fix you find you can't protect other areas from the overspray I'd suggest an airbrush. Spray the paint from the spray bomb into a jar and pour it into the airbrush jar. With the control you have with an airbrush you shouldn't have any problem doing the repair without have overspray going all over the place.

[Wayne K.]

Re: Engine Painting

Bob,

I would go with Bill's idea and just do a touch up. The spray bombs are designed to be used 10-12 inches away from surface being painted. After cleaning the area you need to fix you find you can't protect other areas from the overspray I'd suggest an airbrush. Spray the paint from the spray bomb into a jar and pour it into the airbrush jar. With the control you have with an airbrush you shouldn't have any problem doing the repair without have overspray going all over the place.

[Bob Wild]

Re: Engine Painting

I can understand the paint burning but only after 200 miles, I would expect it after about 5000. I'll try to touch it up by hand. I'm still at the stage of trying to decide to drive or Show. Have to admit DRIVING is more fun.

Thanks for the help
Rookie
Bob

[Bob Wild]

Re: Engine Painting

I can understand the paint burning but only after 200 miles, I would expect it after about 5000. I'll try to touch it up by hand. I'm still at the stage of trying to decide to drive or Show. Have to admit DRIVING is more fun.

Thanks for the help
Rookie
Bob

[Bill Stephenson]

Re: Engine Painting

Bob,

-----It gets hotter during break-in than later on,so the paint may have a tendency to burn sooner.Extra friction during break-in creates extra heat.Even if it didnt it gets just as hot at 200 miles as it does at 5000.For the sake of argument,does the engine have alot of paint on it?I ask only because it sounds as if you went to great lengths with your detail.If so the fact that there is alot of paint there is actually bad for heat escaping the block,intake,and heads,and may have caused more burning of the paint than just a thin coat,like the general applied!!!!!!..........Bill S

[Bill Stephenson]

Re: Engine Painting

Bob,

-----It gets hotter during break-in than later on,so the paint may have a tendency to burn sooner.Extra friction during break-in creates extra heat.Even if it didnt it gets just as hot at 200 miles as it does at 5000.For the sake of argument,does the engine have alot of paint on it?I ask only because it sounds as if you went to great lengths with your detail.If so the fact that there is alot of paint there is actually bad for heat escaping the block,intake,and heads,and may have caused more burning of the paint than just a thin coat,like the general applied!!!!!!..........Bill S

[Bob Wild]

Re: Engine Painting

Bill

It's a light coat of paint, I find it frustrating that it's burning already. But the updside is, if what's suppose to happen. Then it's more original then before. I always have to try and look at the upside :-)

Once again thanks or the support and help

Rookie
Bob

[Bob Wild]

Re: Engine Painting

Bill

It's a light coat of paint, I find it frustrating that it's burning already. But the updside is, if what's suppose to happen. Then it's more original then before. I always have to try and look at the upside :-)

Once again thanks or the support and help

Rookie
Bob

[Michael W.]

Make sure your heat riser valve is opening-

I got tired of repainting my manifold every few months and now just let it do what it wants. Not pretty but it's authentic.

[Michael W.]

Make sure your heat riser valve is opening-

I got tired of repainting my manifold every few months and now just let it do what it wants. Not pretty but it's authentic.