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Old 04-13-2018, 11:21 PM   #1
t8fanning
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Default Engine Bay Painting

I'm not really good at painting and figured I'd ask before I try again. My engine is out, and I got two spray cans of color matched single stage paint. I'm not really interested in going max effort and getting a air compressor and gun. I just want to touch up my engine bay and make it look nicer than it currently is. Doesn't have to be Mike K quality. What should I do to prep? Sand and then prep all or some other cleaner? Any other tips a poor painter like me needs?
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Old 04-13-2018, 11:30 PM   #2
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2 cans probably won't do it.

Get some good primer if you're serious.

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Old 04-13-2018, 11:56 PM   #3
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I agree on the primer, otherwise you'll see flaking paint in months.

For the prep: I would sand it with 60 grit, then 120 grit. After that, I would clean it very well with a degreaser like Dawn dish soap (cuts grease well and is easy to rinse off). As it's wet, check for deep scratches and obvious imperfections before letting it dry and applying primer.

It won't get you into Pebble Beach but it will be clean and should last.
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Old 04-14-2018, 12:15 AM   #4
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If I were to do it again... I'd spend a lot more time prepping, and then use a HVLP gun (or leave it for a professional).

That said, Spraymax 2k epoxy primer in the can did work well for me. I used some unreasonable amount of base and clear on mine. I want to say it was 4 cans of base, and at least 5 cans of clear... but it was a while back and I might have used a lot more than necessary.
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Old 04-14-2018, 01:15 AM   #5
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#60 is a bit coarse unless you're stripping the paint off, I'd go with max #320 like you do with build primer.
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Old 04-14-2018, 02:13 AM   #6
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Originally Posted by Redwood Chair View Post
2 cans probably won't do it.

Get some good primer if you're serious.
Should I still use primer if I'm not taking it down to bare metal? I was planning on scuffing the original paint and going over the top of it. More cans isn't the end of the world.

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Originally Posted by The Full Banana View Post
If I were to do it again... I'd spend a lot more time prepping, and then use a HVLP gun (or leave it for a professional).

That said, Spraymax 2k epoxy primer in the can did work well for me. I used some unreasonable amount of base and clear on mine. I want to say it was 4 cans of base, and at least 5 cans of clear... but it was a while back and I might have used a lot more than necessary.
That would be ideal, but the car's in my garage and I really don't want to tow it somewhere, and it's not so important to me that I want to go out and buy a compressor and gun.

I guess I'll probably need a few more cans, but it's single stage, so at least I won't have to go over it again with clear.
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Old 04-14-2018, 06:54 AM   #7
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Option 1. Power wash, and don't paint.

Option 2. Sand, coat with a sealer, then 2k primer, and then a urethane base and clear. (this is what I did)

Just spray bombing it won't last and it will end up looking worse than it did before.

You can do this with a HVLP gun from harbor freight if you want, and a borrowed compressor.
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Old 04-14-2018, 11:57 AM   #8
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Quote:
Originally Posted by t8fanning View Post
Should I still use primer if I'm not taking it down to bare metal? I was planning on scuffing the original paint and going over the top of it. More cans isn't the end of the world.
You'll probably sand through on the exposed edges where the metal is doubled up if you sand, and then you'll need to prime.

If you scuff with a scotchbrite, you may not get enough mechanical adhesion, and / but primer provides chemical adhesion.
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Old 04-14-2018, 05:09 PM   #9
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Quote:
Originally Posted by Redwood Chair View Post
2 cans probably won't do it.

Get some good primer if you're serious.
The SprayMax shizz is outstanding. Pricey, but their clear coat spray is very very good. I haven't done a primer from them, but I would assume that the quality is across the board with this company.
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