Werid spot in paint

C

Colin6

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So I work at a dealership and we just took this car in on trade. It is a 1997 Porsche 911. Its a dark green color. When I first took a look at the car I didn't really see anything wrong with it at all, in fact for a 97 it was in pretty good shape.

There was a few dents on the driver side door, so I called my dent guy to come take them out. He had to strip the wax and everything off the door, and while he was doing so he revealed that there was some burned paint that was hidden somehow(maybe a glaze or something). I also noticed a weird almost lighter colored blotchy patch, but didn't think much of it.

So I did a tape line and tried some SIP with an orange pad. It took all the burn marks from who every butchered it with a rotary, but the spots remained there, and were even slightly bigger I believe. So I went and grabbed the paint thickness gauge and checked it out. The whole door is pretty consistently 3.5 mil's thick, except these spots. The spots are 2.5 anywhere I put the meter on them.

Anyways I will quit blabbing, here are some pics. They didn't turn out that great, but you can still see the patches. The paint in the patches is slightly lighter in color than the rest of the car.

dmAaj.jpg

9K7Ef.jpg

zOEGw.jpg


Sorry for the lack of proper pictures. I did not have proper lighting and my technique was definitely off :P
 
It would seem from the evidence that the clear has been thinned in those areas almost to the point of failure.
 
Setec Astronomy said:
It would seem from the evidence that the clear has been thinned in those areas almost to the point of failure.
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Yea that was what I was thinking, that's why I didn't polish directly over top of it. Would it still be safe to use something like SIP over top of it if I am polishing the rest of the door? or should I stay clear?
 
I wouldn't go over it with anything abrasive, I'd mask those areas if you are going to polish the rest of the door.

Since you are going to flip it, what are the chances of sending that car over to the bodyshop for a respray on that door? Otherwise I'd do your best on it and put some Opti-Coat on that door and hope it sells fast.
 
Setec Astronomy said:
I wouldn't go over it with anything abrasive, I'd mask those areas if you are going to polish the rest of the door.

Since you are going to flip it, what are the chances of sending that car over to the bodyshop for a respray on that door? Otherwise I'd do your best on it and put some Opti-Coat on that door and hope it sells fast.
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Ill be honest its one of the cheaper cars, I'm sure the boss wont want to spend the money. I guess Ill do my best to hide it for now, and if the person who buys it wants it painted then we will get it done.
 
Colin6 said:
Ill be honest its one of the cheaper cars, I'm sure the boss wont want to spend the money. I guess Ill do my best to hide it for now, and if the person who buys it wants it painted then we will get it done.
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Some heavy wax usually hides those spots for a little while, a heavy paste like Collinite, etc.
 
Not lack of clear. Lack of base coat. Wasn't covered properly. They need to repaint it.
 
Yes looks to me that someone previously cut all the way through the clear. There is really not much you can do to make it better, only worse. Steer clear it is what it is without a body shop.
 
Agfan said:
I deal with paint all day. It looks it was repainted at some point and time and they didn't completely cover the base coat. One way to tell it check the thickness of clear.

Try again qaz393
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Well as stated before, the thickness gauge said 2.5 mil. Everywhere else was 3.5 mil.

Ive got a feeling your more likely to be right as it wouldn't surprise me if this door was painted. I ran polish just over the bottom of the patch and it didnt seem to have any effect to the spot, except for correcting the rotary+wool marks that were previously left.

Maybe some better pictures tomorrow will help clarify.
 
2.5 is fairly low but still shouldn't be all the way through like one may think. But maybe better pics could help. Either way a repaint is the solution.
 
Here are some better shots. The door was definitely painted as you can see the color is slightly off. I would imagine its only because the older paint is sun baked. In the last picture you can see that the last person to work on it left TONS of rotary/wool marks. Luckily they wont be too hard to correct.

t1DzO.jpg

hUevm.jpg


The last persons method of torture for this car.....
7Z7Sq.jpg
 
Wet the area. Does it go away? If so I would add some clear from a spray can and wet sand it smooth. If it doesn't change when wetted than I would say that the base coat is at fault.

Don
 
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