Engine Shroud Refurbishment, There's a hole in my boat |
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Engine Shroud Refurbishment, There's a hole in my boat |
DennisV |
Oct 1 2022, 07:54 AM
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#1
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Member Group: Members Posts: 468 Joined: 8-August 20 From: Santa Rosa, CA Member No.: 24,575 Region Association: Northern California |
Does anyone have first-hand experience refurbishing their engine shroud that they can share? Best practices? Lessons learned?
I bought the best (err only) original engine shroud that I could find that I think is correct for our engine. Thanks for the guidance on that. It might work as is, but it could sure use some help. Faded. Cracks. Etc. I've done some searching, but the best resources I've found so far are boat repair videos. |
roundtwo |
Oct 3 2022, 12:27 PM
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#2
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Member Group: Members Posts: 269 Joined: 9-February 20 From: Petaluma, CA Member No.: 23,905 Region Association: Central California |
Great thread as very useful since I’m going through the same resto project.
Recommended paint that’s resistant to oil and gas? I used epoxy to repair a couple of small damaged areas were fasteners had torn out some material. If I had more extensive repairs I think the fiberglass recommendations in this thread were spot on . Primed with 2 k high fill primer to eliminate micro cracks on the surface. Attached thumbnail(s) |
DennisV |
Oct 3 2022, 01:16 PM
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#3
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Member Group: Members Posts: 468 Joined: 8-August 20 From: Santa Rosa, CA Member No.: 24,575 Region Association: Northern California |
Great thread as very useful since I’m going through the same resto project. Recommended paint that’s resistant to oil and gas? I used epoxy to repair a couple of small damaged areas were fasteners had torn out some material. If I had more extensive repairs I think the fiberglass recommendations in this thread were spot on . Primed with 2 k high fill primer to eliminate micro cracks on the surface. Looks like you made some great progress. Did you use a spray can primer like Eastwood offers? What's the best way to remove the rivets without damaging the fiberglass? I guess I could die grind off the top? Maybe this is my justification for getting an oscillating multi-tool? (IMG:style_emoticons/default/biggrin.gif) |
porschetub |
Oct 3 2022, 04:16 PM
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#4
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Advanced Member Group: Members Posts: 4,699 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
Great thread as very useful since I’m going through the same resto project. Recommended paint that’s resistant to oil and gas? I used epoxy to repair a couple of small damaged areas were fasteners had torn out some material. If I had more extensive repairs I think the fiberglass recommendations in this thread were spot on . Primed with 2 k high fill primer to eliminate micro cracks on the surface. Looks like you made some great progress. Did you use a spray can primer like Eastwood offers? What's the best way to remove the rivets without damaging the fiberglass? I guess I could die grind off the top? Maybe this is my justification for getting an oscillating multi-tool? (IMG:style_emoticons/default/biggrin.gif) Yes ,sorry I forgot to mention I used a 1k Valspar high build primer/surfacer before topcoat ,this helps the paint "key" to the fiberglass and builds up the surface area's where the gelcoat has failed. If you have broken cracked sections remove the fractured stuff and clamp them together with small spring clamps then "tab" glass the area,let it cure and do the full repair after that ,things will be lined up better that way. Your under side view certainly indicates the cooler duct needs to come for that repair,as mentioned about rivets just drill them out ,besides it makes painting easier too. Mark makes a good point about using polyester to recover,its not really gelcoat but a flowcoat which has styrene wax in it and excellant self leveling properties,same stuff is used on surfboards (less pigment) and called "glosscoat". Not a fan of epoxy in some applications and IMO not really suited here as these moldings were made of polyester, anyway I just hate the stuff also....very nasty (IMG:style_emoticons/default/sad.gif) . |
roundtwo |
Oct 3 2022, 05:46 PM
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#5
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Member Group: Members Posts: 269 Joined: 9-February 20 From: Petaluma, CA Member No.: 23,905 Region Association: Central California |
Great thread as very useful since I’m going through the same resto project. Recommended paint that’s resistant to oil and gas? I used epoxy to repair a couple of small damaged areas were fasteners had torn out some material. If I had more extensive repairs I think the fiberglass recommendations in this thread were spot on . Primed with 2 k high fill primer to eliminate micro cracks on the surface. Looks like you made some great progress. Did you use a spray can primer like Eastwood offers? What's the best way to remove the rivets without damaging the fiberglass? I guess I could die grind off the top? Maybe this is my justification for getting an oscillating multi-tool? (IMG:style_emoticons/default/biggrin.gif) Yes ,sorry I forgot to mention I used a 1k Velspar high build primer/surfacer before topcoat ,this helps the paint "key" to the fiberglass and builds up the surface area's where the gelcoat has failed. If you have broken cracked sections remove the fractured stuff and clamp them together with small spring clamps then "tab" glass the area,let it cure and do the full repair after that ,things will be lined up better that way. Your under side view certainly indicates the cooler duct needs to come for that repair,as mentioned about rivets just drill them out ,besides it makes painting easier too. Mark makes a good point about using polyester to recover,its not really gelcoat but a flowcoat which has styrene wax in it and excellant self leveling properties,same stuff is used on surfboards (less pigment) and called "glosscoat". Not a fan of epoxy in some applications and IMO not really suited here as these moldings were made of polyester, anyway I just hate the stuff also....very nasty (IMG:style_emoticons/default/sad.gif) . Agreed the epoxy wasn’t ideal and I wouldn’t go that route again. Fortunately only tiny little areas that needed patching. Fiberglass lessons learned. The largest error I want to avoid is top coating it with the wrong paint. The previous owner refinished the cover and it was clear that some fuel ate through a bunch of areas turning the paint a big globby mess. One issue I’m trying to figure out is what color to paint it. The engine is a 930/02 euro Carrera 3.0. Traditionally the shroud would be red however the color of my car is red as well. So do I paint the appropriate red for the engine That won’t match the color of my Bahia red car or do I go ahead and paint the shroud iBahia red? Or break Porsche tradition for this engine by painting the shroud black as it would look best with the red engine compartment? |
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