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08-07-2012
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#1 |
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Fixing a lexan top
heads up, if you break a back corner on one of these, some Loctite glue and sandpaper will bring it back:
1)clean the surface 2)apply generous amounts of superglue(loctite) to all of the mating surface....not your fingers....and certainly don't take a piss until you verify you are in the clear(sans glue) Windshield repair kit glue would work also I assume....hell might even see if safelite or someone can glue it for you **fill in voids you want it to be built up slightly, don't drip it all over but you need enough over the crack to sand down and hide it....the glue will actual melt the top together... 2)make sure you hold it in place for 10 seconds...... cure for 30 minutes to an hour..overnight is even better 3)now time to blend it in *800 grit wetsand(220 if the broken piece is misalinged and needs to be sanded down...go to 800 after 200 *1500 grit.... *rubbing or jump to polishing compound... While this is not a perfect match on color....the sanding may be too smooth and buffing may even out the color across the panel, the repaired area actually seems smoother and shiney....around the edge of the top frame you will not be able to see the actual crack repair....for a driver its acceptable Will let you know the long term wear on this and if it holds, I was pleasantly surprised.
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-07-2012
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#2 | |
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Fixing a lexan top
Quote:
Lee, may we use this "how to" as an article for HOTB???  P.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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08-07-2012
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#3 |
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Join Date: Oct 2004
Posts: 1,890
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Re: Fixing a lexan top
It would be good if this will last but it would seem unlikely. I had considered a similar repair but also considered positioning the broken to the rest of the top with a couple dowels for support. I actually wanted to confirm the actual material the top is constructed of, we read and call it Lexan but I've never investigated that to confirm.
I had considered using Weld-On IPS-40. What is the Loctite glue used by Lee! IPS #40 properties: http://www.eplastics.com/Plastic/Lex...ESIVE-IPS40-PT |
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08-07-2012
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#4 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Fixing a lexan top
Lets see how it works out, from some of the posts I have read superglue contains the exact material in the top and also melts the 2 pieces together...will need to see how it reacts to heat, cold, etc.....
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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08-07-2012
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#5 |
 
Join Date: Jan 2012
Location: Wisconsin
Posts: 887
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Re: Fixing a lexan top
The "clear" top on my 85 C4 had both edges cracked by the PO. Obviously he lifted up on the top without first pulling it out of the rear hatch guides.
IIRC, I used some type of superglue for plastic. I didn't sand the top like Lee did so it doesn't look pretty, but it has held up since 2005. The top doesn't leak and it hasn't come apart after 7 years. I will admit that I'm a little careful loading it in the hatch, but it's held up well. |
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08-07-2012
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#6 |
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Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
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Re: Fixing a lexan top
you would be shocked to see how well it turned out with sanding
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
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