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Sofia74
Samba Member
Joined: August 30, 2015
Posts: 572
Location: WV
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 Posted: Sun Nov 08, 2020 3:30 pm Post subject: Insulation for heater pipes under the rear seat |
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Do you think this would work for the insulation over the heater pipes under the rear seat? I suspect it won’t because I am guessing those pipes are perforated for a reason and this wrap is not porous.
But I had it on hand.
And if that’s the case any recommendations for insulation? I am missing a couple pieces. Does it need to be a special material due to the heat?
Thanks.
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rbsurfguy
Samba Member
Joined: August 10, 2008
Posts: 1780
Location: Fairfax, Northern Virginia Formerly Huntington Beach, SoCal
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| Posted: Sun Nov 08, 2020 4:08 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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Matt, I think you may be right, the holes must be there to let a little ventilation, re the original "horsehair" type wrap. I used heater pipe insulation from HD, fiberglass type material with a foil backing, then secured with metal pipe tape, and secured with zip ties like original. If you still have originals in good condition, I would just re-wrap with those. If the material is bad, you can probably use what you show in your pic as an overwrap.
Jeff
_________________
1971 Ghia convertible (Body off rebuild)
2019 VW Atlas 4Motion
2012 Passat-Sold
See my build on The Samba at:
Jeff's 71 Vert Restoration/Reassembly http://www.thesamba.com/vw/forum/viewtopic.php?t=6...highlight= |
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Sofia74
Samba Member
Joined: August 30, 2015
Posts: 572
Location: WV
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| Posted: Sun Nov 08, 2020 4:26 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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| Quote: |
| heater pipe insulation from HD |
Good call. I suspect we talked about this previously but didn't remember.
I haven't found all my original insulation but still looking.
Using this as over wrap - also good idea.
Thanks. |
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Evil_Fiz
Samba Member
Joined: May 06, 2011
Posts: 1111
Location: Jacksonville, FL
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| Posted: Mon Nov 09, 2020 11:14 am Post subject: Re: Insulation for heater pipes under the rear seat |
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I recall reading somewhere that the perforated section of the heater duct was there to act as a sound muffler. If that is the case, the best option would be to wrap it in foil backed fiberglass mat and zip tie it in place, taking care not to compress the galass mat too much.
The glass mat will also act as an insulator. So even if the perforations are not a mufler, you are still coming out ahead.
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Emil
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“…It's not just about what's interesting. It's also about what's helpful, and it's helpful even if it helps just one other guy working on a Ghia.”
kiwighia68
See my build on TheSamba at:
The K_R_A_K_E_N_N : a 70 Ghia Convertible reinterpreted |
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Marcdeb
Samba Member
Joined: May 22, 2019
Posts: 3245
Location: Vermont
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| Posted: Mon Nov 09, 2020 1:20 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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Here's the Thread that discusses this topic.
https://www.thesamba.com/vw/forum/viewtopic.php?p=...ns#5829697
Can anyone post photos of the different materials that are used from the factory? I've seen some brown colored padding like stuff that is tie wrapped on.
I've also seen some plastic sleeves that are popped over the pipes.
And I've also seen some foil covered stuffing like material that is again tie wrapped on. I think my 71 Vert had the foil stuff as it was in a box of parts that came with the car. I thought it was garbage until I saw a picture somewhere of the same material tie wrapped over the perforated pipes.
So what years used what?
_________________
Marc
68 Karmann Ghia Cabrio Autostick
71 Karmann Ghia Cabrio
Previously Owned:
2011 VW EOS Hard Top Conv
2008 Saab 9-3 2.0T Conv
2003 Saab 9-3 SE Conv
2001 Saab 9-3 Conv
1998 BMW 3 Series Conv
1997 Saab 900 Conv
1997 Mazda Miata
68 Ghia Vert Survivor with 22,350 miles: https://www.thesamba.com/vw/forum/viewtopic.php?t=768107&highlight=
71 Ghia Vert Restoration: https://www.thesamba.com/vw/forum/viewtopic.php?t=726710&postorder=asc |
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NoDents
Samba Member
Joined: May 31, 2017
Posts: 450
Location: So Cal
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| Posted: Mon Nov 09, 2020 2:05 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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I don't have a picture, but my 71 has what appears to be cotton fiber (threads?) material under a tan colored plastic wrap.
And I do think it was partly used as a "muffler" for engine noise.
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No Dents
1963 Bug - Sold in 1980
1966 Karmann Ghia Convertible - Stolen in 1988
1971 Karmann Ghia Convertible, resto/mod COMPLETED 10/2020 |
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Marcdeb
Samba Member
Joined: May 22, 2019
Posts: 3245
Location: Vermont
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| Posted: Mon Nov 09, 2020 7:18 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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Here's a picture I found somewhere of the insulation material being held in place with tie wraps. The next picture is this same material that came in a box of parts with my 71 Vert. It looks similar to carpet pad covered by a brown cloth that looks like burlap on the inside but has more of a plastic look on the outside. I realize now that the car needs 4 of these and I only have 2. The last picture is another style of heater pipe cover that came in that same box.
I don't know what years used which style? I wonder just how hot these pipes can get and if these materials need to be fire resistant?
_________________
Marc
68 Karmann Ghia Cabrio Autostick
71 Karmann Ghia Cabrio
Previously Owned:
2011 VW EOS Hard Top Conv
2008 Saab 9-3 2.0T Conv
2003 Saab 9-3 SE Conv
2001 Saab 9-3 Conv
1998 BMW 3 Series Conv
1997 Saab 900 Conv
1997 Mazda Miata
68 Ghia Vert Survivor with 22,350 miles: https://www.thesamba.com/vw/forum/viewtopic.php?t=768107&highlight=
71 Ghia Vert Restoration: https://www.thesamba.com/vw/forum/viewtopic.php?t=726710&postorder=asc |
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NoDents
Samba Member
Joined: May 31, 2017
Posts: 450
Location: So Cal
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| Posted: Mon Nov 09, 2020 7:33 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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The first 2 pictures is what my 71 has.
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No Dents
1963 Bug - Sold in 1980
1966 Karmann Ghia Convertible - Stolen in 1988
1971 Karmann Ghia Convertible, resto/mod COMPLETED 10/2020 |
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rbsurfguy
Samba Member
Joined: August 10, 2008
Posts: 1780
Location: Fairfax, Northern Virginia Formerly Huntington Beach, SoCal
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| Posted: Mon Nov 09, 2020 7:33 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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I could be wrong, but I think those plastic tube covers are for early models. I have never had these or seen them on my 71.
Jeff
_________________
1971 Ghia convertible (Body off rebuild)
2019 VW Atlas 4Motion
2012 Passat-Sold
See my build on The Samba at:
Jeff's 71 Vert Restoration/Reassembly http://www.thesamba.com/vw/forum/viewtopic.php?t=6...highlight= |
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Redlabel6
Samba Member
Joined: October 17, 2016
Posts: 389
Location: Minnesota
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Marcdeb
Samba Member
Joined: May 22, 2019
Posts: 3245
Location: Vermont
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sjbartnik
Samba Member
Joined: September 01, 2011
Posts: 6041
Location: Brooklyn
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| Posted: Tue Nov 10, 2020 9:45 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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The pipes should have some sort of insulation on them. Unless you wanna heat the area under the back seat for some reason 
Careful with that Reflectix stuff, check the max temp. I think it's around 180 degrees F which may not be sufficient for the heater.
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1965 Volkswagen 1500 Variant S
2000 Kawasaki W650 |
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Sofia74
Samba Member
Joined: August 30, 2015
Posts: 572
Location: WV
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| Posted: Sat Nov 14, 2020 1:02 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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| Quote: |
| Careful with that Reflectix stuff, check the max temp. I think it's around 180 degrees F which may not be sufficient for the heater. |
Are you referring to the photo in the original post? It does have a plastic bubble wrap like inner layer. I don't have the packaging so I can't check temperature rating.
But...I had the same worry about the denim material. I have something similar on hand but was worried about the temperature... |
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pierrox
Samba Member
Joined: March 06, 2013
Posts: 268
Location: Paris, London, The Alps, North Carolina
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| Posted: Fri Jun 13, 2025 4:54 am Post subject: Re: Insulation for heater pipes under the rear seat |
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| NoDents wrote: |
I do think it was partly used as a "muffler" for engine noise.
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Reviving an old thread because it's the closest to my question...
After years, my 1971 Karmann is finally getting its rockers replaced. Upon opening, we found that the heater tubes are pretty damaged. Are there replacement parts available? Do Beetles/SuperBugs have the same?
Been searching the usual vendors with no success...
Thanks!
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Era Vulgaris
Samba Member
Joined: August 22, 2012
Posts: 1915
Location: Raleigh, NC
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| Posted: Fri Jun 13, 2025 5:25 am Post subject: Re: Insulation for heater pipes under the rear seat |
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| pierrox wrote: |
Reviving an old thread because it's the closest to my question...
After years, my 1971 Karmann is finally getting its rockers replaced. Upon opening, we found that the heater tubes are pretty damaged. Are there replacement parts available? Do Beetles/SuperBugs have the same?
Been searching the usual vendors with no success...
Thanks! |
Search the classifieds. I've seen those heater ducts for sale in the classifieds in the past, either listed on their own or via cars being parted out. I don't think anyone reproduces them that I know of.
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Currently own:
66 Karmann Ghia, L390 Gulf Blue, under construction, here: www.thesamba.com/vw/forum/viewtopic.php?t=760505&highlight=
99 Mazda MX-5 10AE, Sapphire Blue Mica, 6 speed, LSD
Previously owned:
98 Porsche Boxster, silver, 2.5L -- 67 Karmann Ghia, Black, 1500sp -- 98 BMW Z3, Atlanta Blue Metallic, 2.8L I6 -- 75 Porsche 914, Laguna Blue, 2270cc -- 72 Porsche 914, Signal Orange, 1.7 FI -- 74 Karmann Ghia, Black, 1600dp -- 74 Triumph TR6 with O.D., sapphire blue |
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pierrox
Samba Member
Joined: March 06, 2013
Posts: 268
Location: Paris, London, The Alps, North Carolina
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| Posted: Fri Jun 13, 2025 5:38 am Post subject: Re: Insulation for heater pipes under the rear seat |
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Unfortunately, being based in France, not sure shipping from the US makes financial sense. If even possible.
I'll have a look though, who knows!
Thanks!
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pierrox
Samba Member
Joined: March 06, 2013
Posts: 268
Location: Paris, London, The Alps, North Carolina
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Disc
Samba Member
Joined: September 24, 2009
Posts: 632
Location: Europe
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| Posted: Fri Jun 13, 2025 11:07 pm Post subject: Re: Insulation for heater pipes under the rear seat |
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That part does not fit in Ghia!
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pierrox
Samba Member
Joined: March 06, 2013
Posts: 268
Location: Paris, London, The Alps, North Carolina
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| Posted: Sat Jun 14, 2025 2:03 am Post subject: Re: Insulation for heater pipes under the rear seat |
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This definite answer sounds like you went through the same issue! 
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