Painting Aluminium
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  1. #1
    Fellow Frogger! chez00's Avatar
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    Default Painting Aluminium

    Does anyone do it? I've been taught not to do it as it effects heat dispersion, but I wonder with modern technology if there's any product that doesn't hinder heat dispersion. To be honest I just want a bit of bling under my bonnet and am wondering how bad it would be to paint my cylinder head before I machine it.

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    Fellow Frogger! rtsnoz's Avatar
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    http://www.jet-hot.com.au/

    They're currently doing my exhaust manifold, and claim to be able to do it to most things... Looks like they can certainly add some bling anyway.

  3. #3
    cdt
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    never tried painting a car engine alloy head but have done so with motorcycle engine
    heads and have found that it only looks good for a short time till the paint fades and cracks.
    probably due to heat but i think more to do with expansion and contraction. anodising could be a good option and there is a good range of colours available these days but for my money
    you cant beat bead blasting for stress relieving, heat dispersion and looks.

    cheers

    chris

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    1000+ Posts jo proffi's Avatar
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    Quote Originally Posted by chez00 View Post
    Does anyone do it? I've been taught not to do it as it effects heat dispersion, but I wonder with modern technology if there's any product that doesn't hinder heat dispersion. To be honest I just want a bit of bling under my bonnet and am wondering how bad it would be to paint my cylinder head before I machine it.
    Is your engine air cooled or water cooled???
    Just avoid painting the inside of the head.
    I use high temp quality paint for mine, and have had no adhesion issues, probably because of the grainy surface of the head. Of course the job is only as good as the prep, so after a bath in the cleaner tank, the paint should stick like the proverbial......

    I dont suggest painting before you machine it, as scratches and nicks will look crappy.
    Just mask up the holes and paint it up last thing before you install it onto the motor.


    Jo

  5. #5
    Fellow Frogger! chez00's Avatar
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    ...anodising could be a good option and there is a good range of colours available these days ...
    Anodising is an option I hadn't thought of. I usually like a nice clean lump of alloy too, but everything under the bonnet of a 205 is alloy! I thought it might be nice to add a bit of a feature...

    Cheers for the advice.

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