Clear Targa top. Question
Le Mans Master
Joined: Sep 2009
Posts: 6,338
Likes: 1,148
From: Vermilion OH
The crazing is fairly normal to see on these tops. Both the blue and bronze tinted tops can craze and it can get worse if the car is stored outside year round. I found that out the hard way unfortunately. Light scratches can be taken care of as mentioned above. The crazing appear to be cracks below the surface of the top. They are cosmetic and will not be the cause a leak from the top.
Thread Starter
Racer
Joined: Nov 2022
Posts: 345
Likes: 31
From: Massachusetts
Targa top
I think the car was stored inside most of its life, the top only has some light sctraches, I was hoping to try some 3000 grit and polish to remove the scratches. Do you think I should use polish made for plastic or light polish?
Drifting
Joined: Aug 2022
Posts: 1,507
Likes: 427
From: Ruskin, FL
This is from the C6 forum but it should work just as well on a C4 top.
https://www.corvetteforum.com/forums...finishing.html
https://www.corvetteforum.com/forums...finishing.html
Burning Brakes
Joined: Aug 2008
Posts: 893
Likes: 226
From: Tampa, FL
Yeah, the "crazing" that you see is as a result of the acrylic top basically creating lots of micro-cracks as a result of sun and the chemicals slowly leaching out of it.
I restore mechanical watches as a hobby, and many of the older ones from the 50s and such have "crystals" which is the name for the acrylic / plastic dome that covers the watch face. These do the exact same thing. Unfortunately, there is very little that you can do. One thing that people tend to do is use an acrylic polish across the top and bottom, and then use a graphine type of solution to help fill the micro-cracks as much as possible. You can then wax it and it'll look a LOT better (at least 50% reduction in visible crazing).
I restore mechanical watches as a hobby, and many of the older ones from the 50s and such have "crystals" which is the name for the acrylic / plastic dome that covers the watch face. These do the exact same thing. Unfortunately, there is very little that you can do. One thing that people tend to do is use an acrylic polish across the top and bottom, and then use a graphine type of solution to help fill the micro-cracks as much as possible. You can then wax it and it'll look a LOT better (at least 50% reduction in visible crazing).
