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Powder coat s50 valve cover

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  • M3AN
    replied
    Originally posted by frbz View Post
    Does anyone know what the Euro S50B30 euro valve cover made of. The black coating on mine cover is flaking and i need to change the valve cover gasket and check the valve clearance and was contemplating having it powder coated when it is off. However i do not want to do that if it complicated.
    It's very light so magnesium or aluminium, I'd lean towards the former because magnesium is pretty common in BMW's whereas I'm not aware of any other alu ones.

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  • frbz
    replied
    Does anyone know what the Euro S50B30 euro valve cover made of. The black coating on mine cover is flaking and i need to change the valve cover gasket and check the valve clearance and was contemplating having it powder coated when it is off. However i do not want to do that if it complicated.

    Leave a comment:


  • nalasivad
    replied
    thank you for the info.

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  • bmwstephen
    replied
    Originally posted by nalasivad View Post
    Are new ones from the dealer still magnesium? And will they show the same flaking as in your photo?
    yes as long as it is an m50/s50 motor it is. there hasn't been any revisions to the design unless you went s52.

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  • nalasivad
    replied
    Are new ones from the dealer still magnesium? And will they show the same flaking as in your photo?

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  • Johal E32
    commented on 's reply
    I did not, it came with a S52 engine that I purchased last year. Personally, I would have asked the shop to leave the mating surfaces free and clear of any powdercoating material, but a light film of Hylomar or Drei Bond around the perimeter of the vcg should suffice. I did the same thing on my E90 M3 to prevent the magnesium powdercoated valve cover gaskets from leaking.

  • bmwstephen
    replied
    Originally posted by Johal E32 View Post
    That’s my valve cover in the photo. Already sold.
    nice! do you actually do powder coating yourself?

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  • h82crash
    replied
    Originally posted by bmwstephen View Post
    anyone experience powder coating these since they are magnesium material (vs plastic in OBD2). Wonder if anyone can recommend someone in norcal who can do it.
    Best to call around and ask if they can do magnesium. It is super susceptible to corrosion. I went through three looking for a replacement that wasn't turning into swiss cheese. I'm sure they will all say yes, but inquire about their process. Once stripped, it is supposed to be treated with chromic acid and rinsed thoroughly. Then primed with zinc chromate. But this is aerospace level treatment. I think if you can remove all of the oxidation then powder coat, it should last a long time.

    This is what they looked like after degreasing which hid the condition before getting them home.

    https://live.staticflickr.com/65535/...3e9b3a5e1a.jpg
    Last edited by h82crash; 08-04-2020, 12:52 PM.

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  • Johal E32
    replied
    That’s my valve cover in the photo. Already sold.

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  • Braymond141
    replied
    Johal E32

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  • bmwstephen
    started a topic Powder coat s50 valve cover

    Powder coat s50 valve cover

    anyone experience powder coating these since they are magnesium material (vs plastic in OBD2). Wonder if anyone can recommend someone in norcal who can do it.

    alternatively, there is one f/s but not sure if it is usable because it appears there's some runoff powdercoating underneath the matting edges:

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