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Thread: Removing original paint from sidecovers etc.

  1. #1
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    Default Removing original paint from sidecovers etc.

    In the not too distant future, I'll be wanting to get a new paint job. The current livery is original but rather faded, so I plan to have the same OEM colour replicated.
    My question relates to the plastics i.e. side covers and tail section. What is the best method of removing the original paint from these ABS(?) plastics? Anyone else done this?
    TIA

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    Quote Originally Posted by Himble View Post
    In the not too distant future, I'll be wanting to get a new paint job. The current livery is original but rather faded, so I plan to have the same OEM colour replicated.
    My question relates to the plastics i.e. side covers and tail section. What is the best method of removing the original paint from these ABS(?) plastics? Anyone else done this?
    TIA

    If the paint is still intact and not flaking, why would you need to remove it? Any minor imperfections can be smoothed out with a light skin of filler and the rest lightly scuffed for good paint adhesion. I can see if it has been painted multiple times of your not sure what type of paint is on there, but even then it can be sprayed with a sealer first, then painted with whatever type of paint you choose.
    GSRick
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  3. #3
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    Rick. I have tried the scuff and cover and have had reactions between the old VS new..kinda spider webbed all over the place. After sanding down to raw plastic it didn't react. Im no painting expert, but to me it seems the extra effort to sand them clean is far better than redoing it again after being md as heck seeing the paint curdled up.
    I use 120 and my RO electric sander and finish with some 400. Prime and paint.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
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    I just cleaned mine and sent them to a body shop to be painted. My issue ('82 GS850GL) with the side covers is that the two tone color from the factory was by way of a vinyl decal. I can't imagine that paint would stick to that. Like Chuck, I used the radom orbital with 220 grit, cleaned the adhesive residue with alcohol then hand sanded with 400. STAY AWAY from cleaning with acetone on the side covers.

    My covers had large cracks in them, before paint prep I ground out the cracks into a v shape trough on both sides of the cover then brushed the crack with acetone. This 'welded' the abs plastic together. I then filled with Permatex Plastic weld. Any finish work was done with bondo finishing glaze after the initial sanding. I then pre-primed them with Duplicolor high build primer.
    1982 GS850GL - currently being rebuilt

  5. #5
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    Quote Originally Posted by chuck hahn View Post
    Rick. I have tried the scuff and cover and have had reactions between the old VS new..kinda spider webbed all over the place. After sanding down to raw plastic it didn't react. Im no painting expert, but to me it seems the extra effort to sand them clean is far better than redoing it again after being md as heck seeing the paint curdled up.
    I use 120 and my RO electric sander and finish with some 400. Prime and paint.
    If the paint is still intact and not flaking, why would you need to remove it? Any minor imperfections can be smoothed out with a light skin of filler and the rest lightly scuffed for good paint adhesion. I can see if it has been painted multiple times of your not sure what type of paint is on there, but even then it can be sprayed with a sealer first, then painted with whatever type of paint you choose.
    You need to spray a sealer on it before repainting it. It separates the two type of paints so they can't react to one another.
    GSRick
    No God, no peace. Know God, know peace.

    Eric Bang RIP 9/5/2018
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    I know that Rick..even tried Epoxy primers and it didn't stop everything. The only sure fire remedy is to sand it to bare base and do it. Been there done that an its a waste of time any other way from my persepctive anyway.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

  7. #7
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    Quote Originally Posted by Himble View Post
    I........................ What is the best method of removing the original paint from these ABS(?) plastics? Anyone else done this?....
    Remove original paint from sidecovers?
    original paint? sidecovers?

    THose are not painted, originally. That is the color of the plastic.

    Oh, the pin stripping. THose are decals....... havent tried to remove any myself.


    (PS: this section of for THE project. THe "appearance" section would be good for such a posting.)

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  8. #8
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    Not wanting to argue, but you wont find any body shop that will strip everything it paints down to the base surface. Too time consuming and impractical. Some project that need extensive body work maybe, but for general practice a sealer is applied. At least that is what I was taught at a community collage where I took the class to work on my pick up back in the early 90's. I'm sure one of our painters will chime in soon.

    Quote Originally Posted by chuck hahn View Post
    I know that Rick..even tried Epoxy primers and it didn't stop everything. The only sure fire remedy is to sand it to bare base and do it. Been there done that an its a waste of time any other way from my persepctive anyway.
    GSRick
    No God, no peace. Know God, know peace.

    Eric Bang RIP 9/5/2018
    Have some bikes ready for us when we meet up.

  9. #9
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    Im not arguing. Im stating my own experience and what I did about it that resolved all issues.
    MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
    1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

    NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


    I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

  10. #10
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    I repainted some Kawasaki EX500 fairing panels one time and got crazing. Used epoxy primer over the old paint on that project but didn't strip the panel. After reading further on the subject the recommendation was to dust on the initial paint layers very light and dry and allow plenty of flash-off time between coats. It was a slow process but using this method I was able to get the paint down without issues.

    That said, given my druthers I'd rather strip the panel since it's guaranteed to work. That's what I wound up doing for my KZ750 and everything turned out well. Used a DA w/150 grit paper (or something close to that.) Followed with 220 and then shot a couple three layers of epoxy on top, followed by blocking that back. Some people don't like using epoxy like that but I find it works fine.

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