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Spray Painting Engine Block

Old 11-Sep-2008, 08:30 PM
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Spray Painting Engine Block

just have a question...
will any thing happen to engine's performance if we spray paint the top of engine block covering plugs and jointss....???? that a good thing...or no i shouldn t try it
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Old 11-Sep-2008, 08:37 PM
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the valve cover you mean?

Cover and seal everything, overspray FTMFL.

take it off the engine, mask, prep, prime, spray.

put back on.

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Old 11-Sep-2008, 08:43 PM
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so nun will happen if i cover and spray where i want to spray...
but what will happen if something happens.....
^ thanks for the reply thou boss
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Old 12-Sep-2008, 05:14 AM
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take it off guy...spray bomb will go everywhere then good luck selling your car with overspray all over the engine bay and wiring harness and god knows what else. dont paint inside the cover either.
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Old 12-Sep-2008, 07:41 AM
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yeah, I would take it off first.. nothing looks worse then overspray
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Old 12-Sep-2008, 08:24 AM
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I just painted a few valve covers in the last week......Take It Off!!
Its just to easy.
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Old 12-Sep-2008, 08:30 AM
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its 4 bolts lol.

just don't overtighten them
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Old 12-Sep-2008, 08:44 AM
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remove the cover before you paint it but clean the mating surface of and the gasket. if the cover shows signs of leaks, small or otherwise this would be a good time to replace it. you may even want to do the seals around the plugs thier easy if you know how but ca be hard and tedious if you don't. A small CLEAN amount of silicon in the corners near the dizzy and cam gear isn't a bad idea either.
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Old 12-Sep-2008, 06:37 PM
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IMO its too much hassle to remove the whole cover etc, and it sounds more of a diy job since ur asking on here and unless you have the money or are more experienced with takign some parts off and getting new gaskets etc. im not one of those that would remove it and so...

IMO the most efficient and easy way to do it would be the following,

1 clean the engine area u are painting

2 use a tarp, place it over the block and cut out the rough shape of the engine.

tape over the seams of the tarp around the base fo the valve cover underneathe the rim where the gasket would mate the lower part of the engine.

3 remove the spark plugs and use a thick shop towel(blue heavy duty paper towels) and roll it so that u can stick it into the valve holes and oil cap hole so it stays snug and it seals any overspray into the holes.

4 paint using high heat, it wont wreck anything as long as u dont get ne overspray into the engine.

5 let air dry for 5 or so minutes and then i would drive it around to let the paint bake and cure a lil better

took me 5 min from start to finish, with more care urs will look mint. no visible overspray as the tarp covers both fenders and entire engine bay. It wont effect performance and it is not bad or good it is ur own taste, if u want to do it, jus do it if think it is too outrageous then pass on it, i didnt really care if it was painted or not but one day decided to finish up a can of old hi heat i had and sprayed it and threw the can out hence it took 5 minutes, i dont recall sanding it either, i jus dry wiped it with a towel and painted, no flaking of the paint and it seems to have settled nicely. there are some parts u can see on the side of the block that are a lil grainy, which were either buildup of a lil grime but it seems to be sticking still after a few months

original thread -

Last edited by Crazydragonclk; 12-Sep-2008 at 06:47 PM.
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