paint under oil filter cap?

Sam Eubanks · Oct 4, 2010

I am ptreparing to paint an engine block. Is it OK to prime and paint the part of the block that goes under the opil filter and cap?

AS always, your feedback is greatly appreciated!

Sam

Nebraska Cowman · Oct 4, 2010

I guess if it's clean enough so the paint will stick. My question would be Why? Maybe you are thinking Why not?

Sam Eubanks · Oct 4, 2010

I want to prime it when I do the rest of the block before assembly. I am taping off the parts that absolutely should not get paint. This got me wondering what others recommend for this spot. This particular block has been hot dipped and shop blasted. it is dry as a bone. If I ever wanted to paint a spot, now is the time!

I guess I'd like to know what is original?

ScottyHOMeY · Oct 4, 2010

I'm kinda in the "Why?" camp. Under that filter dome is wunna those places on a tractor where you really dont need paint to protect anything. Under the heading of "Why not?" . . . Seems to me a coat of paint under the dome is something that could flake loose and get into something, whether that be due to some residual oil in the meatal that affects adhesion or, or the paint failing in the oil environment, whether from chemical or heat effects. You really don't want a gob of softened paint makin' its way into your crank and pluggin' the oil to a bearing.

It wouldn't take but a minute to mask over it, and cut your tape even to the inside of the ring where the gasket and dome rest.

CNKS · Oct 4, 2010

Not sure I understand what part you mean. But, I mask off anything that comes in contact with oil. As the others say, it isn't necessary, and the paint could flake off. Otherwise I paint everything, easily visible or not.

Ron in Nebr · Oct 5, 2010

It's not original, and wont be of any real benefit in this situation, but there IS a paint thats designed for exactly what you're talking about. There's a company that specializes in engine machine tools etc called Goodson(I think? You can probably google them and find the right place) that sells a paint designed to coat the inside surfaces of an engine. On race engines various spots like the lifter valley on a v-type engine is painted, supposed to help the oil drain back to the crankcase easier and also to "seal in" any grit that may be left in the casting. The paint's about the color of red primer when applied.

MisterT · Oct 5, 2010

(quoted from post at 02:23:15 10/05/10) I am ptreparing to paint an engine block. Is it OK to prime and paint the part of the block that goes under the opil filter and cap?

AS always, your feedback is greatly appreciated!

Sam

No, you do not want any paint in those areas. Put the filter cover and the fill cap in place before you paint or prime.

mkirsch · Oct 5, 2010

The oil filter cap makes it tough to get paint on the block behind it.

Just tape it off.

I'd be afraid that the constant contact with oil would eventually loosen the paint and send it into the engine somewhere. Probably wouldn't cause any problems, but words like "should" and "probably" scare me.

rustyfarmall · Oct 5, 2010

(quoted from post at 05:29:06 10/05/10) The oil filter cap makes it tough to get paint on the block behind it.

Just tape it off.

I'd be afraid that the constant contact with oil would eventually loosen the paint and send it into the engine somewhere. Probably wouldn't cause any problems, but words like "should" and "probably" scare me.

Exactly. That paint will very quickly peel off and go into the oil pan. It could then plug up or at least restrict the oil pump pick-up screen (not good) or it might even find its way into the oil galleys and stop the flow of oil to the main bearings or the rod bearings, and then you will be rebuilding that engine all over again.

Anonymous-0 · Oct 5, 2010

If you want original,put the whole tractor together and shoot it with paint. Some of it will get too much paint with runs, some will barely get paint and some won't get any paint. N.ow it will be like original

biggerred · Oct 6, 2010

smear some axle grease on the area, paint, then wipe off the grease.

paint under oil filter cap?

Sam Eubanks

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Nebraska Cowman

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Sam Eubanks

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ScottyHOMeY

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CNKS

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Ron in Nebr

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MisterT

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mkirsch

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rustyfarmall

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Anonymous-0

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biggerred

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