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rusty57 Samba Member
Joined: October 21, 2003 Posts: 2089 Location: Bakersfield,CA.
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Posted: Sun Oct 24, 2004 8:59 pm Post subject: Heater muffler? |
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So, today while working on the bus electrical system, i decided to look underneat and see how difficult it would be to install parking brake and heat. Well, i've never had a passenger bus with heat in the rear. My previous panel bus had the heater boxes connected to two inlets that went to the front vents. Looked just like a bugs heat system somewhat. Well, as i followed the heat tube, i thought someone cut and welded the left side. Jay, a friend of mine that was actually doing the electricals,thanks Jay, told me that it's supposed to be like that. Well, obviously i'm missing the pieces that go from the heater box to the tube inlet for the rear passenger area heat. He mentioned that i can conect any kind of tubing, but it originally had some sort of noise muffler. Any one know where i can get one of these. Or a picture of what it looks like?Thanks in advance. _________________ 67 Ghia coupe, Retired military.
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TimGud Samba Member
Joined: March 03, 2002 Posts: 6459 Location: Rio Rico Arizona
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Posted: Sun Oct 24, 2004 9:10 pm Post subject: |
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Post a wanted ad in the classifieds.Somebody will have them. If nobody else posts a pic before tomorrow I will take a pic of one for you. |
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Friedpotatoes Addicted4life
Joined: April 04, 2003 Posts: 1215 Location: Fresno California
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Posted: Sun Oct 24, 2004 10:32 pm Post subject: |
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that should be what you need.
im shocked how much that oil/dirt kept up that paint. _________________ 56- Wolfsburg Single Cab
57- Oval Window Bug (Agave Green) |
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Friedpotatoes Addicted4life
Joined: April 04, 2003 Posts: 1215 Location: Fresno California
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Posted: Sun Oct 24, 2004 10:36 pm Post subject: |
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bugs had the same concept but there's were a plastic accordion shape. _________________ 56- Wolfsburg Single Cab
57- Oval Window Bug (Agave Green) |
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Buckly Samba Member
Joined: September 14, 2004 Posts: 1030 Location: Spokane, WA
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Posted: Mon Oct 25, 2004 9:08 am Post subject: |
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The bus heatfliter thing uses a flexible metal tube to finish the connection. _________________ Cool runnins,
_______________________
Bucky |
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rusty57 Samba Member
Joined: October 21, 2003 Posts: 2089 Location: Bakersfield,CA.
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Posted: Mon Oct 25, 2004 9:39 am Post subject: |
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I put a wanted ad on the classifieds. Hopefully someone will have one. Anybody want to trade something from a 66 standard walk through for one of those things? _________________ 67 Ghia coupe, Retired military.
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type2much Samba Member
Joined: November 13, 2003 Posts: 319 Location: 65536 Missouri
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Posted: Mon Oct 25, 2004 9:51 am Post subject: |
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I have an extra or two if you'd want to trade something. they are just the muffler parts like in the picture above, you would still need the other flexible pieces to finish the connection. |
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swervyjoe Samba Member
Joined: February 07, 2004 Posts: 968 Location: denver, co
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Posted: Mon Oct 25, 2004 10:00 am Post subject: |
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i have one, but need the other. |
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rusty57 Samba Member
Joined: October 21, 2003 Posts: 2089 Location: Bakersfield,CA.
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Posted: Mon Oct 25, 2004 4:26 pm Post subject: |
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Ok. I have a 66 standard walk through(og paint) with lots of parts on it. What do you want to trade? I have misce. engine parts, single/dual port and other odds and ends. I have 14 inch portawalls (used only 3 days). Some VW toys etc.... _________________ 67 Ghia coupe, Retired military.
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Spitty1974 Samba Member
Joined: September 30, 2011 Posts: 647 Location: California
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Posted: Wed May 26, 2021 11:19 am Post subject: Re: Heater Muffler Rebuild??? |
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After speaking with a few people in this community, all suggested I do not try to rebuild my heater baffles.
That said, I'm doing it. I saw what the long heater tube looked like in my bus before cleaning, and these baffles were really dirty and filled with nastiness, and rusty. Although I won't use the heater much, I didn't want to be pumping all that nastiness into the bus. The material inside the baffle was disgusting and I have no desire to breathe any of it in.
After further examination, I could see there are spot welded together. I marked them and drilled out the spot welds.
The material inside was full of dirt, and who knows what else. Here it is out of the tube.
Here is the inside of the tube showing some surface rust.
Here are the spot welds drilled out.
Here it is opened up. I only drilled one side, I figured I could replace the material easily along with the steel mesh by just opening one side. It worked fine. I'll probably go back and add a few plug welds on the other side just to make sure all is secure.
Here it is after a quick blast in the cabinet. I'm going to go back and hit it again after I fit the material and mesh back into it. Once I get that fitted, I'll remove it, give it a quick blasting and paint the inside, then use weldable primer along the edges where I need to plug weld back together.
Does anyone have any suggestions for a material to use behind the steel mesh? I want to put something back in there, obviously it had a purpose. I just don't know what to use.
Thank you for any suggestions
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BonTonRoulet Samba Member
Joined: September 29, 2020 Posts: 363 Location: Mississippi
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Posted: Wed May 26, 2021 12:34 pm Post subject: Re: Heater Muffler Rebuild??? |
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Spitty1974 wrote: |
After speaking with a few people in this community, all suggested I do not try to rebuild my heater baffles.
That said, I'm doing it.
Ha! That's the spirit!
Does anyone have any suggestions for a material to use behind the steel mesh? I want to put something back in there, obviously it had a purpose. I just don't know what to use.
Thank you for any suggestions
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I guess you could try to put the old material in a cheese cloth sack or tie it up in a pillow case and run it through the washer and dryer? What's to lose other than a wife/girlfriend IF you get caught doing it?! (Pro tip: coin laundry joint!) |
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velvetgreen Samba Member
Joined: August 17, 2004 Posts: 2746 Location: Canada
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Posted: Wed May 26, 2021 12:53 pm Post subject: Re: Heater muffler? |
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I used repro heater baffles which appear to use fibreglass insulation https://www.cip1.ca/ProductDetails.asp?ProductCode=VWC%2D113%2D255%2D355%2DD.
I was never was clear what the original insulation was, it almost looked like something nasty like aesbestos? hard to tell as they were/are usually caked with oil/dirt etc. |
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Spitty1974 Samba Member
Joined: September 30, 2011 Posts: 647 Location: California
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Posted: Wed May 26, 2021 6:19 pm Post subject: Re: Heater muffler? |
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Thanks for the suggestions. Yeah, I made sure to wear a respirator when Taking the old material out. It almost looked like fiberglass insulation. I didn’t investigate too much. It literally fell apart, material all degrading with
Little structural integrity.
I think I may use some recycled cotton insulation, possibly recycled denim. I’ve read it’s not toxic, no fibers, and has good sound dampening qualities. I’m sure it would also help to retain some heat as warm air passes through it.
I looked around here and online I couldn’t seem to find anyone who documented a rebuild. Surely someone out there has done a rebuild of them? |
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velvetgreen Samba Member
Joined: August 17, 2004 Posts: 2746 Location: Canada
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Posted: Wed May 26, 2021 6:45 pm Post subject: Re: Heater muffler? |
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a good idea when removing questionable airborne materials is to wet it prior to removal. Sure keeps it a lot less airborne. I agree a respirator would also be a good idea. I am sure someone has rebuilt them although not perhaps to the degree that you are! |
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Help Help Samba Member
Joined: May 03, 2013 Posts: 117 Location: Running willy-nilly with scissors in So Cal
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Posted: Thu May 27, 2021 10:27 am Post subject: Re: Heater muffler? |
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Doe anyone have any tricks of reassembling this and the other metal sleeve *while the engine is in place*? Neither this piece or the other metal sleeve are flexible enough to put these two fixed length pieces in the smaller fixed length between the heater box and the body.
I picked up some plastic flexible bug heater tubes to cut down and get around this problem but have not gotten the ginsu out just yet. |
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Spitty1974 Samba Member
Joined: September 30, 2011 Posts: 647 Location: California
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Posted: Thu May 27, 2021 12:13 pm Post subject: Re: Heater muffler? |
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I don't have any tips. I took apart the second one today, and it was much easier. The first go around was new, the second one was much easier and cleaner after doing it once.
This time, after drilling out the spot welds I could find, I went back and used the Dremel with a cut off blade and was able to get in between the two pieces and cut any weld area not drilled out. This one came apart really easy.
Dremel action
Spot welds drilled out
Used a C-Clamp to hold one half of the tube, placed in a vise so I could pry it apart, worked like a charm.
The insulation material is wrapped with burlap and tied in place to hold it all together.
Here is a picture of the insulation and burlap together. This one I wanted to keep intact so I can duplicate with the new materials. The first one I ripped out and it got mangled. This one, I waited until it was opened up to remove.
Here is a picture of it opened up, still need to media blast it and put primer on it.
I ordered some stainless steel mesh and some insulation made of recycled denim/cotton. It's a greener insulation than fiberglass and also acts as sound deadening. Both coming from Amazon. I will update as I progress with the rebuild.
The old insulation almost appears to be some type of fabric material, but maybe it has fiberglass in it. I didn't investigate it much, and don't plan to mess around with it and get any fibers airborne. |
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Spitty1974 Samba Member
Joined: September 30, 2011 Posts: 647 Location: California
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Posted: Thu Sep 09, 2021 8:41 pm Post subject: Re: Heater muffler? |
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Ok folks, I'm finally getting around to documenting the rest of this heater build. I always have good intentions of finishing up any threads I add to, or work Ive done, but then life happens...
Anyway, here are the mufflers after media blasting.
I sprayed them with some Etch Primer.
Then, I hit the insides with some gray paint that is close to the factory gray primer color. Just wanted something over the etch primer on the inside. They were originally just raw metal and a bit rusted on the inside when I opened them.
I have found that this Krylon was a decent match to the factory primer, but just a gloss finish.
I found some recycled denim insulation that I decided to use to replace the old insulation, it looked similar and was the same thickness.
I also found some stainless steal mesh that was similar to the original, except it is stainless instead of regular steel.
The old and the two new pieces of insulation I cut to use inside the mufflers.
The old and the new burlap that I cut that goes around the insulation inside the mufflers.
The old and new mesh cylinders I formed out fo stainless mesh.
All the new stuff ready to be installed prior to welding them back up.
Two pictures of the new mesh cylinders with the new insulation and burlap all tied up and ready to go into the mufflers. Originally, there were some metal pins threaded to hold it together. I opted to just tie them up with some twine to hold them together. Once inside and welded up, they aren't going to unfold.
Here is a picture of the inside pressing. The actual metal mesh sphere needs to fit right up to this. So, there is almost a little recession there to hold in place there.
A few pics welding them back up. The metal ended up getting holes on both sides when I drilled them out. So, when I welded it back up, I backed it with copper and filled them in. Here are a few pictures of the welding process. There were some areas where I had to build the welds up heavily where there was no metal left from the separation...Then I went back and shaped the flange areas where it was missing metal after drilling and separating the two pieces to looks as original as possible. As mentioned previously, the first one I took apart was a little rough, the second one came apart much more cleanly.
Here are a few pictures of them with some primer on them before I top coated them with the Smoke Gray.
Here is a picture of them painted up with the Krylon Smoke Gray and ready for installation.
It was fun to challenge myself to rebuild these. I had never seen a thread on how to do this, so I decided to tackle it. I'm glad I did, I learned a thing or two in the process and I'm happy with the end result. |
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campingbox Samba Member
Joined: November 14, 2000 Posts: 10196 Location: Petaluma, CA
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Posted: Thu Sep 09, 2021 9:48 pm Post subject: Re: Heater muffler? |
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Good job Paul. |
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mdege Samba Member
Joined: January 16, 2018 Posts: 940 Location: Niederkruechten, Germany
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EverettB Administrator
Joined: April 11, 2000 Posts: 69829 Location: Phoenix Metro
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