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Thread: Engine cover re-paint

  1. #1
    Join Date
    Apr 2004
    Location
    Raleigh, North Carolina
    Posts
    279

    Default Engine cover re-paint

    Hiya -

    My engine cover is really worn and crappy-looking. Since I'm about to do so much work under the hood, it sure would be nice to have a nice-looking hat over the thing, a little show of pride in workmanship (assuming, of course, that the car still runs after I'm through).

    Yves told me that a new cover is $255; so I wondered, is it possible to just mask off and re-paint this cover's lettering?

    What paint would work? Wouldn't the heat under there cause regular spray paint to degrade quickly, or even catch fire? What do you guys think about this?
    Ex-Calypso Red 540i owner

  2. #2
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
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    14,843

    Default would have to be for plastic,

    regular paint would peel right off. im sure it would be possible though with some patience. Probably have to sand/scuff the old silver and then apply the new paint. Might be able to use a hard nap roller on the top and just spray the sides.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  3. #3
    Join Date
    Jan 2004
    Location
    NY
    Posts
    478

    Default

    With bare plastic, vinyl dye (for car seats- comes in a spray can) works amazingly well, but I haven't seen how it handles heat under the hood. It almost seems to sink into the plastic, and is very hard to get off. You have to be careful when spraying it though- the surface has to be clean, and you have to do very fine mist coats, and lots of them. Otherwise the surface will crack, or you'll get an orange peel effect. I used vinyl dye to coat the plastic face of my head unit in my last car- it was grey and didn't match the black of the e34. It gets in all the small crevices of the surface, like a very thin paint.

    Custom Turbocharged 1991 535iM - 135k mi.

  4. #4
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,843

    Default I never saw silver Vinyl dye.

    Quote Originally Posted by AllanS
    With bare plastic, vinyl dye (for car seats- comes in a spray can) works amazingly well, but I haven't seen how it handles heat under the hood. It almost seems to sink into the plastic, and is very hard to get off. You have to be careful when spraying it though- the surface has to be clean, and you have to do very fine mist coats, and lots of them. Otherwise the surface will crack, or you'll get an orange peel effect. I used vinyl dye to coat the plastic face of my head unit in my last car- it was grey and didn't match the black of the e34. It gets in all the small crevices of the surface, like a very thin paint.
    95 E34 530I V2.37
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  5. #5
    Join Date
    Jan 2004
    Location
    NY
    Posts
    478

    Default

    VHT makes grey... that's like a dull silver I guess... and you can get metallic silver from SEM

    http://store.summitracing.com/defaul...yl+dye&x=0&y=0

    http://shop.store.yahoo.com/yourauto...rmetallic.html

    Custom Turbocharged 1991 535iM - 135k mi.

  6. #6
    Join Date
    Jun 2004
    Posts
    114

    Default

    Just pick up a can of high heat engine enamel, you can find it at home depot/ace hardware/auto parts store for a couple bucks. Typically this paint can handle 1500 degrees, i used it over the summer painting vw engine blocks.

    Black/Black '90 535IM..... '65 Cal look vw bug

  7. #7
    Join Date
    Apr 2004
    Location
    Raleigh, North Carolina
    Posts
    279

    Default

    Rock on, thanks man!

    Quote Originally Posted by casurfer911
    Just pick up a can of high heat engine enamel, you can find it at home depot/ace hardware/auto parts store for a couple bucks. Typically this paint can handle 1500 degrees, i used it over the summer painting vw engine blocks.
    Ex-Calypso Red 540i owner

  8. #8
    Join Date
    Jan 2004
    Posts
    1,235

    Default Sand the plastic and clean with:

    a 50/50 solution of rubbing alcohol and vinegar, then paint it.

    I had some plastic parts to prep and I went out and bought a bottle of fancy-schmancy plastic paint prep cleanser. The guys behind the counter said "be careful with that stuff, it's really dangerous. So I asked for the MSDS on it so I would know exactly what was in it.

    I was using it and being really really careful for a while. Then I read the MSDS... turns out it was 50% rubbing alcohol, 50% vinegar! Talk about overpriced packaging.

    Anyway - its a good cleanser for removing oily/greasy stuff for paint prep because it evaporates without a residue.

    HTH
    Robin

    72 Chevy K10
    01 E39 M5

  9. #9
    Join Date
    Jan 2004
    Location
    Pleasanton, California
    Posts
    244

    Default A few more thoughts to confuse you . . .

    1: I always clean the parts first with a degreaser or the 50/50 mixture Robin suggested. That way I don't sand any grease into the part. After it's sanded, I clean again.

    2: Unless you're right next to the headers, the temperatures inside an engine compartment aren't THAT hot. Remember there are all kinds of stickers and plastic parts under the hood that survive the heat just fine. My point is I don't think you need paint that withstands 1500 degrees when the part you're painting won't ever see more than 150 degrees.

    3: On my 530iT, I added a hood emblem to the engine cover. I drilled two holes slightly smaller than the posts on the back of the emblem and pushed it on. I like the extra color and chrome under the hood.


    Good luck.

    Curt.
    1994 530iT

  10. #10
    Join Date
    Apr 2004
    Location
    Raleigh, North Carolina
    Posts
    279

    Default

    I just picked up silver engine enamel at AutoZone today anyhow. Right now, though, this is pretty far down the list of priorities, given how many other projects NEED to be done to the thing...

    What DID arrive in the mail today was my Zimmermann cross-drilled rotors and PBR ceramic pads Woohoo!
    Ex-Calypso Red 540i owner

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