Powdercoating Engine - Road Glide Forums
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post #1 of 22 (permalink) Old 03-26-2016, 05:15 AM Thread Starter
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Powdercoating Engine

Is it possible to powdercoat the whole engine block? When I bought my first Harley, it was just an impulse buy. I knew I wanted a RG and I knew I loved the look of the one I bought. Now since owning it, I realized I'm not much of a chrome guy, and the matte grey of the engine block is starting to flake off in areas.

So I started to think, is it possible to powdercoat the engine or would it just be a waste of money?

I know I wouldn't have to powdercoat everything, since I do plan on upgrading my 96", so I know I wouldn't have to powdercoat the fin part of the engine (don't know what it's called, I'm not mechanically inclined, forgive me).

This is the look I'm going for:

2007 RG FLTR
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post #2 of 22 (permalink) Old 03-26-2016, 07:24 AM
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I'm not sure if there's a powdercoat out there that can withstand the constant heat of an engine. If there is, that would be the way to go, but of course, you'd have to completely disassemble the engine, down to the empty cases to have it done. There would be alot of cleaning afterwards due to the media used to clean off the old finish. That stuff would be in every orafice. All bearing, threads, & gasket surfaces would need to be blocked off so theres no powdercoat buildup in those areas, etc etc.
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post #3 of 22 (permalink) Old 03-26-2016, 08:07 AM
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The engine cases are metal so I do not see a reason why you cannot powder coat them. Heat should not be an issue. It would be a lot of work to accomplish this however unless you are already tearing the motor down completely. Keep in mind you would probably want to do the transmission case at the same time which adds to the amount of work.

My biggest concern would be blasting the cases to bare metal. You need to be careful not to affect bearing races ect.

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post #4 of 22 (permalink) Old 03-26-2016, 08:23 AM
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It isn't just the heat that I was speaking of, but the constant, repeated heat that the engine sees, as well as exposure to fluids, leaks, etc. I also wonder if powdercoating would hold heat in the engie more so than paint? I myself am curious if powdercoat would hold up long term on an engine. I guess the right person to ask would be a powdercoater.
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post #5 of 22 (permalink) Old 03-26-2016, 09:12 AM
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Your best bet may be to leave the engine assembled, remove from bike mask it off and spray wrinkle black. A lot of work.
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post #6 of 22 (permalink) Old 03-26-2016, 11:02 AM
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Quote:
Originally Posted by rg113 View Post
Your best bet may be to leave the engine assembled, remove from bike mask it off and spray wrinkle black. A lot of work.
Agreed.
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post #7 of 22 (permalink) Old 03-26-2016, 11:03 AM
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The cases, barrels and heads can all be safely powder coated. The finish will easily withstand the heat. Powder coating is cured at over 400 degrees. The problem is the must be completely disassembled. All of the exterior parts have to be masked and prepped. If you want to do that welded crank, 124 rebuild it needs to happen with the color change.

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post #8 of 22 (permalink) Old 03-26-2016, 11:49 AM
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In 1990 I had my engine & trans powered coated. Before you assemble your engine a extensive cleaning needs to happen. I used a thread restoring kit which just cleaned the threads out. Don't use a tap. A gun cleaning kit will help.


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post #9 of 22 (permalink) Old 03-26-2016, 03:33 PM
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Good to know that the pc will hold up. Too bad it's so much work to do it though.

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post #10 of 22 (permalink) Old 03-26-2016, 09:22 PM Thread Starter
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Thank you everyone for your responses, guess it will not be worth the time and cost. Maybe a whole new engine would come up in a few years.

Extremely disappointed as I don't want to have this flaky matte chrome anymore.

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