Engine paint
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Engine paint

  1. #1
    Senior Member holorinhal's Avatar
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    Default Engine paint

    What is the best type of paint to use to paint the engine block?
    Will automotive paint hold up to the heat?...H

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  3. #2
    MAMA TRIED BENSE's Avatar
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    Imron polyurethane, or single stage urethane, por15, enamel. Its all in the prep work. I'm no expert, but I've done a few myself and the block needs to be perfectly clean. No oil, paint, grease,rust, or moisture or you will have issues. You don't have to prime the cast, but you can. I'm sure some of the other guys on here can help out more. There are a few paint guys around. Todd Griggs, Billy B etc.

  4. #3
    Senior Member Pattymelt18's Avatar
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    I just use PPg urethane. like bense said its all the prep. i dont use primer anymore waste of time in my mind.

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    Senior Member Nailhead's Avatar
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    I used an epoxy like on the brake calipers. Brush it on and it dries real smooth like you smoothed out the block.

  7. #5
    Senior Member tx19condor's Avatar
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    We have had real good luck with ppg epoxy primer (dplf) and single stage urethane (dcc) it holds up real well. Like everyone else said, the prep work is the most important part.

  8. #6
    jetboataholic HawaiianJet's Avatar
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    Clean and brush and scrub the block extensively. Use wire brushes, scotch brite, or anything else that is rough. Wash the block with both soapy water and solvent based cleaners. Like everyone else said, It's all in the prep work. I personally use primer, but I'm not a paint guy. If you do prime it first, you should scuff up the surface first to help the final coat stick better, but it's not necessary. Hope this helps. But like I said I'm not a painter, this is just what I do and it's worked for me.

  9. #7
    Senior Member old rigger's Avatar
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    Best engine paint I ever used on a bare, clean block was 'One Shot" the same stuff sign painters and pin stripers use. No priming. Tough as nails. Never cracked or peeled.

  10. #8
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    Default engine paint

    I use Imron. that stuff will not come off at the machine shop. Same paint job has been tanked every year, and its still on there. No primer either.

    Jerry

  11. #9
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    I agree with Old Rigger. "One Shot" enamel. Used it on several engines and looks great. Lots of colors available too!

  12. #10
    Some guy obnoxious001's Avatar
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    For anyone who hasn't tried it,, get a can of Duplicolor engine paint. It's ceramic based, goes on fairly easily and smooth and has a real nice finish. I have had people ask if it's ok to touch days after it was sprayed on, it looks that shiny and wet. On top of that it stays on the block. One word of caution, read the instructions, make sure you don't wait more than an hour between coats, otherwise you are supposed to wait 5 days.

  13. #11
    Glendale Arizona Squirtcha?'s Avatar
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    O.k. here's one for ya. My new to me boat is white and blue. My engine is getting swapped out of my Kachina and into the new boat. It's orange (duplicolor) and is actually holding up pretty well paint-wise. I'm not about to disassemble the motor just to paint it, but I've got to do something with it. It's gonna look pretty stupid as is.

    I was just going to clean up any loose flakes, oil and/or grease and hit it again with a more suitable color (duplicolor again).

    Anybody do a re-coat and did it stick?

    Oh yeah I just have to paint the block and alternator. The heads are aluminum.

  14. #12
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    i paint all my engines with Rustolem. You can brush or spray it. It takes a day to dry but it sticks good. Pat

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    Quote Originally Posted by Squirtcha? View Post

    Anybody do a re-coat and did it stick?
    Dan,
    It will stick fine as long as you get it clean - no oil or grease. I usually use the PPG wax and grease remover(Acrylaclean), but laquer thinner works good too.

    Doug

  16. #14
    Senior Member Constant840's Avatar
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    Quote Originally Posted by obnoxious001 View Post
    For anyone who hasn't tried it,, get a can of Duplicolor engine paint. It's ceramic based, goes on fairly easily and smooth and has a real nice finish. I have had people ask if it's ok to touch days after it was sprayed on, it looks that shiny and wet. On top of that it stays on the block. One word of caution, read the instructions, make sure you don't wait more than an hour between coats, otherwise you are supposed to wait 5 days.
    This is what I used. It remains a bit brittle and chips easy for the about a week, but after a full cure it looks real nice. It hasn't been on long so we will see about its longevity.
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