Smooth Targa Tops |
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Smooth Targa Tops |
madmax914 |
Feb 19 2014, 01:57 PM
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#1
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Member Group: Members Posts: 204 Joined: 16-February 14 From: Salem, Oregon Member No.: 17,007 Region Association: Pacific Northwest |
Looking at images online of 914's, I' noticed smooth color matched targa tops. How are they doing this, are they using a fiberglass cap over the existing top or are they using filler and sanding them smooth? Can someone enlighten me on this?
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JawjaPorsche |
Feb 19 2014, 01:58 PM
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#2
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Advanced Member Group: Members Posts: 3,463 Joined: 23-July 11 From: Clayton, Georgia Member No.: 13,351 Region Association: South East States |
Looking at images online of 914's, I' noticed smooth color matched targa tops. How are they doing this, are they using a fiberglass cap over the existing top or are they using filler and sanding them smooth? Can someone enlighten me on this? You can sand the existing top smooth, prime, and paint. Use rough/medium sandpaper to get grain down then use fine sandpaper to finish. Don't be in hurry. Take your time, go slow with the sanding. The fiberglass top is much softer than steel. |
JmuRiz |
Feb 19 2014, 02:09 PM
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#3
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914 Guru Group: Members Posts: 5,426 Joined: 30-December 02 From: NoVA Member No.: 50 Region Association: MidAtlantic Region |
Just don't go too deep or you'll go through all of the coating.
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reharvey |
Feb 19 2014, 05:45 PM
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#4
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Senior Member Group: Members Posts: 573 Joined: 16-July 08 From: N. E. Ohio Member No.: 9,308 Region Association: North East States |
Looking at images online of 914's, I' noticed smooth color matched targa tops. How are they doing this, are they using a fiberglass cap over the existing top or are they using filler and sanding them smooth? Can someone enlighten me on this? You can sand the existing top smooth, prime, and paint. Use rough/medium sandpaper to get grain down then use fine sandpaper to finish. Don't be in hurry. Take your time, go slow with the sanding. The fiberglass top is much softer than steel. (IMG:style_emoticons/default/agree.gif) I've done this on five of my cars. Take your time and block sand it smooth. |
chads74 |
Feb 19 2014, 06:49 PM
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#5
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Member Group: Members Posts: 386 Joined: 13-March 12 From: Tampa, FL Member No.: 14,252 Region Association: South East States |
I just did mine and I put a skim coat of filler, then sanded. Ended up sanding all the way back though the filler before I was happy with the finish. I didn't take my time and you can tell, but still looks really good.
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chads74 |
Feb 19 2014, 06:51 PM
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#6
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Member Group: Members Posts: 386 Joined: 13-March 12 From: Tampa, FL Member No.: 14,252 Region Association: South East States |
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Steve |
Feb 19 2014, 08:28 PM
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#7
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914 Guru Group: Members Posts: 5,585 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California |
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larryM |
Feb 19 2014, 10:23 PM
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#8
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emoze Group: Members Posts: 891 Joined: 1-January 03 From: mid- California Member No.: 65 Region Association: Northern California |
my car was fitted with a thicker, smooth, reinforced top as built in Germany -
a prototype item from Werks 1 - so clearly there was a factory mold for this back in the day - NOT a sanded down 4-cyl version it is about 9 lbs heavier than the stock top, has alloy reinforcement bars embedded in the 'glass around all 4 sides, and is 2-3mm thicker overall - . |
chads74 |
Feb 20 2014, 09:40 AM
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#9
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Member Group: Members Posts: 386 Joined: 13-March 12 From: Tampa, FL Member No.: 14,252 Region Association: South East States |
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eyesright |
Feb 20 2014, 09:48 AM
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#10
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Member Group: Members Posts: 430 Joined: 8-January 12 From: OK Member No.: 13,979 Region Association: Southwest Region |
And it makes them go faster... (IMG:style_emoticons/default/sunglasses.gif)
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brant |
Feb 20 2014, 12:40 PM
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#11
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914 Wizard Group: Members Posts: 11,623 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
I've sanded through the gel coat
you will get spider cracks every 6 months if you do the only way I was able to put a stop to that on mine was to take it to a fiberglass manufacturer and have them re gel coat it so be careful... sand lightly.. |
ThePaintedMan |
Feb 20 2014, 01:06 PM
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#12
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Advanced Member Group: Members Posts: 3,886 Joined: 6-September 11 From: St. Petersburg, FL Member No.: 13,527 Region Association: South East States |
I've sanded through the gel coat you will get spider cracks every 6 months if you do the only way I was able to put a stop to that on mine was to take it to a fiberglass manufacturer and have them re gel coat it so be careful... sand lightly.. Glad you brought this up. I mentioned this before, but if you do go to sand it down and especially if you go through the gel coat, you should still expect to skim coat the top with filler and re-sand. Once the gel coat is compromised, the resins/gases still trapped (yes, even after 40 years) inside the fiberglass will want to escape through the paint. As Brant mentioned, it's either lay down another layer of gel coat or skim coat with high quality filler. |
Trekkor |
Feb 20 2014, 01:24 PM
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#13
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
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