Hello! Log in or Register   |  Help  |  Donate  |  Buy Shirts  See all banner ads | Advertise on TheSamba.com  
TheSamba.com
 
Heater Tube Replacement
Page: 1, 2  Next
Forum Index -> Bay Window Bus Share: Facebook Twitter
Reply to topic
Print View
Quick sort: Show newest posts on top | Show oldest posts on top View previous topic :: View next topic  
Author Message
david_594
Samba Member


Joined: November 08, 2006
Posts: 484
Location: Columbus, OH
david_594 is offline 

PostPosted: Mon Jun 08, 2009 6:43 pm    Post subject: Heater Tube Replacement Reply with quote

So I finally got around to replacing the heater tube on my bus. Just in time for a nice hot summer.

Before all of this my bus would barely make enough heat in the winter to keep my windshield defrosted. And whenever I touched the heater pipe I could hear crunching within the outer wrapping. Pictures for your enjoyment...

So when I unwrapped my original heater tube this basically fell on my head. Its pretty obvious where my heat was going. Sad
Image may have been reduced in size. Click image to view fullscreen.


So the replacement. I used a 2.5" 403 grade stainless steel pipe. I bought a 5' section off ebay for $48 and cut it down to ~50" in length. This gave me just enough length to slide it in both ends of my original pipe. The original was ~2.75" in diameter so this gave reasonable snug, but far from airtight seal.

Image may have been reduced in size. Click image to view fullscreen.


Once it was in place I placed a few pop rivets in at each end to secure it somewhat.

I then wrapped each end with many layers of Nashua brand 324A "Cold Weather" foil tape. This tape is rated for temps up to 325* Fahrenheit and really the only foil tape I could find with a suitable temp range at home depot.

Image may have been reduced in size. Click image to view fullscreen.


After than I decided to insulate it by first wrapping it in a 2" piece of fiberglass insulation, and then wrapping that with a piece of Reflectex.

Image may have been reduced in size. Click image to view fullscreen.


I the taped the reflectex together using the same Nashua tape.

Image may have been reduced in size. Click image to view fullscreen.


Overall the project cost me about $75 which I think is pretty reasonable and I feel like my replacement is well sealed, insulated and there is no reason why it shouldn't last another 40 years.
_________________
1968 westy weekender
2000 jetta tdi
79 vespa p200e
Back to top
View user's profile Send private message Gallery Classifieds Feedback
calebmelvin
Samba Member


Joined: July 19, 2006
Posts: 2984
Location: Seattle
calebmelvin is offline 

PostPosted: Mon Jun 08, 2009 6:55 pm    Post subject: Reply with quote

Wow that thing was toast! Good job, too bad you have to wait a bit to get much use out of it Cool
_________________
Caleb
'66 Manx | My Wanted Ads
Stop dead photo links! Post your photos to The Samba Gallery!
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
rcnotes
Samba Member


Joined: July 09, 2005
Posts: 641
Location: Ann Arbor, MI
rcnotes is offline 

PostPosted: Tue Jun 09, 2009 6:56 am    Post subject: Reply with quote

Nice job!
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Tom Powell
Samba Member


Joined: December 01, 2005
Posts: 4855
Location: Kaneohe
Tom Powell is offline 

PostPosted: Tue Jun 09, 2009 10:43 pm    Post subject: Reply with quote

Just read your posting on your new heater tube. This winter i didn't get the volume of air or the heat that I did last year and there was noise from the right side vent. Tomorrow morning I'll crawl under the camper and squeeze my heater tube and see if it crunches or crackles. I'll bet mine needs replacing also. Thanks for the post, the pictures, and the repair info.
Aloha
tp
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
foxtail1
Samba Member


Joined: February 04, 2008
Posts: 706
Location: graham
foxtail1 is offline 

PostPosted: Sat Jan 09, 2010 7:27 am    Post subject: Reply with quote

It looks like there will be a lot of squeezing going on, me to after I saw the photos of your heat tube. That will have to wait until summer time.
_________________
As they say, "You never know until you ask the question."

64 bug
64 bus
59 ghia
71 bus
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 42111

Wildthings is offline 

PostPosted: Sat Jan 09, 2010 10:10 am    Post subject: Reply with quote

Just a suggestion, use stainless steel stove pipe and/or close cell foam insulation, the fiberglass insulation is going to get wet, hold water and rust out steel or even galvanized steel pipe pretty quickly.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
SGKent Premium Member
Samba Member


Joined: October 30, 2007
Posts: 32164
Location: Nor Cal
SGKent is offline 

PostPosted: Sat Jan 09, 2010 10:45 am    Post subject: Reply with quote

also - that tape has a tendency to loosen with time. Use cable ties to back it up.
_________________
"There are no great men, there are only great challenges that ordinary men are forced by circumstances to meet." - Adm William F. Halsey Jr

Caveat: I am not telling you what to, or what not to do. When a suggestion is offered, it is wishing you the best, and is based on my experiences as a mechanic, automotive machinist, and from racing in the era your bus came to life. My only goal is to share what has been learned on my path. Smile

1971 (sold)
1977
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
rustbus
Samba Member


Joined: June 18, 2009
Posts: 2058
Location: alberta
rustbus is offline 

PostPosted: Sat Jan 09, 2010 11:05 am    Post subject: Reply with quote

On the farm we have 3" aluminum irrigation piping - i used a section of this and it works great, and keeps the vehicle weight down for efficiency Razz
_________________
May of '72 Deluxe. Red Bay Bus 2.0L L-Jet CS & 091 trans conversion
my Bus thread
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 42111

Wildthings is offline 

PostPosted: Sat Jan 09, 2010 6:55 pm    Post subject: Reply with quote

rustbus wrote:
On the farm we have 3" aluminum irrigation piping - i used a section of this and it works great, and keeps the vehicle weight down for efficiency Razz


Nice idea, I may go that route the next time I fix up a heater system.
Back to top
View user's profile Send private message Gallery Classifieds Feedback
SGKent Premium Member
Samba Member


Joined: October 30, 2007
Posts: 32164
Location: Nor Cal
SGKent is offline 

PostPosted: Sat Jan 09, 2010 7:29 pm    Post subject: Reply with quote

I am kind of at a loss here. My heater tube is like an accordian and runs all the way from the back to the front. It is double walled and is sealed with flexible rubber membranes. The pipe in the photo looks like it was rusty thin wall steel. Do some years have a hard tube instead of a flexible one?
_________________
"There are no great men, there are only great challenges that ordinary men are forced by circumstances to meet." - Adm William F. Halsey Jr

Caveat: I am not telling you what to, or what not to do. When a suggestion is offered, it is wishing you the best, and is based on my experiences as a mechanic, automotive machinist, and from racing in the era your bus came to life. My only goal is to share what has been learned on my path. Smile

1971 (sold)
1977
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
Wildthings
Samba Member


Joined: March 13, 2005
Posts: 42111

Wildthings is offline 

PostPosted: Sat Jan 09, 2010 7:41 pm    Post subject: Reply with quote

SGKent wrote:
I am kind of at a loss here. My heater tube is like an accordian and runs all the way from the back to the front. It is double walled and is sealed with flexible rubber membranes. The pipe in the photo looks like it was rusty thin wall steel. Do some years have a hard tube instead of a flexible one?


Earlier models had steel tubing while later ones had the corrugated paper. Both have there failings. Crying or Very sad
Back to top
View user's profile Send private message Gallery Classifieds Feedback
BuckeyeBus
Samba Member


Joined: November 28, 2008
Posts: 18
Location: Batavia, Ohio
BuckeyeBus is offline 

PostPosted: Sat Sep 01, 2012 7:41 pm    Post subject: Main Heater Tube Reply with quote

Is there anything inherently dangerous about using standard auto exhaust pipe for a tube replacement?
Back to top
View user's profile Send private message Gallery Classifieds Feedback
busdaddy
Samba Member


Joined: February 12, 2004
Posts: 43423
Location: Surrey B.C. Canada, Land of the giant flying moose!
busdaddy is offline 

PostPosted: Sat Sep 01, 2012 7:59 pm    Post subject: Reply with quote

Nope, as long as it fits it works fine.
_________________
Rust NEVER sleeps and stock never goes out of style.

Wanted, OG paint 1971 Niagara blue decklid.

Stop dead photo links! Post your photos to The Samba Gallery!
Back to top
View user's profile Send private message Gallery Classifieds Feedback
SGKent Premium Member
Samba Member


Joined: October 30, 2007
Posts: 32164
Location: Nor Cal
SGKent is offline 

PostPosted: Sat Sep 01, 2012 8:05 pm    Post subject: Re: Main Heater Tube Reply with quote

BuckeyeBus wrote:
Is there anything inherently dangerous about using standard auto exhaust pipe for a tube replacement?


As long as it isn't hooked up to the tailpipe Smile

I'd try to stay with something stainless and avoid anything that melts when wrapping it. The temperature coming off the heat exchangers will melt plastic quickly.
_________________
"There are no great men, there are only great challenges that ordinary men are forced by circumstances to meet." - Adm William F. Halsey Jr

Caveat: I am not telling you what to, or what not to do. When a suggestion is offered, it is wishing you the best, and is based on my experiences as a mechanic, automotive machinist, and from racing in the era your bus came to life. My only goal is to share what has been learned on my path. Smile

1971 (sold)
1977
Back to top
View user's profile Send private message Send e-mail Gallery Classifieds Feedback
Tcash
Samba Member


Joined: July 20, 2011
Posts: 12843
Location: San Jose, California, USA
Tcash is offline 

PostPosted: Tue Aug 23, 2016 9:51 am    Post subject: Re: Heater Tube Replacement Reply with quote

Heater Tube Replacement

aerosurfer wrote:
Wanted to share my new heat tube version I did this week. The old diverter was completely gone, and the whole system was poorly rigged (incompletley at that too) from the P.O.

Cut out a like new diverter piece from a parts bus, and finally got around to crafting it all up.

from the Hardware store I used

Two 3"to 4" aluminum connectors
3" Piece of aluminum ducting, Came as a 5' section
4" flexible dryer tubing
3" flexible dryer tubing
Aluminum tape
Roll of Reflectix

First I only wanted to do this once (in theory) so I made sure to POR15 the underside of the floor and frame above where the tube will be
Image may have been reduced in size. Click image to view fullscreen.


Then I welded the diverter back into position. The dryer tubing hanging down is the 3" tubing up over the beam to the heater tree in the cabin, partly wrapped in reflectix. The aluminum tape on the intake side of the diverter is to widen the opening as that will receive the 4" end of one of the connectors

Image may have been reduced in size. Click image to view fullscreen.


With the original fiberglass diaper back in place. Taped and sealed
Image may have been reduced in size. Click image to view fullscreen.


Now the 3" aluminum tube, cut in the middle to allow it to be snug in both ends
Image may have been reduced in size. Click image to view fullscreen.


Started wrapping Reflectix in sections over the aluminum pipe
Image may have been reduced in size. Click image to view fullscreen.


Off the the rear Y pipe I inserted the 3" end of the other connector into it. Once again with Speed tape on the outside diameter of 3" side of the connector to seal and snug it, then forced the other half of the 3" aluminum pipe into the 4" section
Image may have been reduced in size. Click image to view fullscreen.


I was able to cut it so it was very snug in the gap. This I only used speed tape to seal the sections
Image may have been reduced in size. Click image to view fullscreen.



On the rear part, the Reflectix slides snugly into the gap of the 4" connector around the 3" pipe. I didnt get a picture of it, but before I put on the other half of the pipe i slid the 4" dryer flex tube over the reflectix as additional insulation and protection. And all sealed up.
Image may have been reduced in size. Click image to view fullscreen.


I still have some more reflectix to add the front hose, and I have to install and cover the other outlets in the diverter, but I can report the heat is very nice and pretty strong. Elsewhere in the system its sealed , but not perfect off the heater boxes and flappers. I had nothing to compare it to prior (in any bus), but it blows out of the defrost vent very well. I know some have said to delete the diverter junction all together, but it was such a perfect part and I was able to get the forward floor vent tube and a non broken cable for it. Still have to make something or use SCAT tubing for the vent under the rear bed


heater tube replacement solution

Welt wrote:

Before removing the rotisserie, some final things were done down under. Copied the original insulation with aluminized fibreglass fabric and ceramic wool.
Image may have been reduced in size. Click image to view fullscreen.

Installed everything with aluminium tape and galvanized steel wire.
Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.

Back to top
View user's profile Send private message Gallery Classifieds Feedback
aerosurfer
Samba Member


Joined: March 25, 2012
Posts: 1597
Location: Indianapolis, IN
aerosurfer is offline 

PostPosted: Tue Aug 23, 2016 10:17 am    Post subject: Re: Heater Tube Replacement Reply with quote

That's my write up on the aluminum heat duct and I can say it has held up very well so far. Blows nice and hot.

Also if anyone needs the fiberglass insulating piece on the Y pipe I just listed one in the classifieds

http://www.thesamba.com/vw/classifieds/detail.php?id=1963275
_________________
Rebuild your own FI Harness..My Harness

77 Westy 2.0L Rockin and Rolling Resto!

72 Sportsmobile (sold)
79 Tran$porter... Parts car money machine (gone)
Back to top
View user's profile Send private message Gallery Classifieds Feedback
jtauxe
Samba Member


Joined: September 30, 2004
Posts: 5288
Location: Los Alamos, New Mexico
jtauxe is offline 

PostPosted: Tue Aug 23, 2016 1:53 pm    Post subject: Re: Heater Tube Replacement Reply with quote

My metal guy in Denver replaced the heater tube with a 3.5" stove pipe. It has an inner and outer layer, and insulation between.
Image may have been reduced in size. Click image to view fullscreen.


Here is the double cab on the rotisserie:
Image may have been reduced in size. Click image to view fullscreen.


And another pic of the pipe, sealed up:
Image may have been reduced in size. Click image to view fullscreen.

_________________
John
"The bus came by and I got on. That's when it all began..." - Garcia/Weir/Kreutzman
http://vw.tauxe.net
1969 Transporter, 1971 Westfalia, 1976, 1977, 1976, 1977, 1971, 1973, 1977 Westfalias,
1979 Champagne Sunroof, 1974 Westfalia Automatic, 1979 Transporter, 1972 Sportsmobile, 1973 Transporter Wild Westerner, 1974 Westfalia parts bus
, 1975 Mexican single cab, 1978 Irish 4-door double cab RHD
Back to top
View user's profile Send private message Visit poster's website Gallery Classifieds Feedback
otiswesty
Samba Member


Joined: November 21, 2006
Posts: 1398
Location: Portland
otiswesty is offline 

PostPosted: Sat Apr 01, 2017 12:51 pm    Post subject: Re: Heater Tube Replacement Reply with quote

Looks like just the right size
Image may have been reduced in size. Click image to view fullscreen.

_________________
1978 Sage Green P22 Westfalia

Just a regular guy
Back to top
View user's profile Send private message Gallery Classifieds Feedback
DougB
Samba Member


Joined: January 09, 2007
Posts: 1032
Location: Falls Church, Virginia, USA
DougB is offline 

PostPosted: Tue Oct 17, 2017 7:19 am    Post subject: Re: Heater Tube Replacement Reply with quote

If you don't mind me asking, what's the length on that stove pipe segment you installed? It looks like one pre-made unit (no cutting visible), so it makes me think it was bought to the correct dimensions.

Thanks in advance!

- Doug Smile
_________________
'75 Campmobile (former tin-top now with a SpaceRoof)
'73 Fastback
'52 BMW R67/2
'67 BMW R60/2
'55 Puch SGS250
http://www.vw-mplate.com/mplate-23040.htm
Back to top
View user's profile Send private message AIM Address Yahoo Messenger Gallery Classifieds Feedback
Gregg in the 603
Samba Member


Joined: April 13, 2013
Posts: 346
Location: New Hampshire, USA
Gregg in the 603 is offline 

PostPosted: Tue Oct 17, 2017 4:21 pm    Post subject: Re: Heater Tube Replacement Reply with quote

I used the exact same piece, bought it right off the shelf at Home Depot. Don't remember the size, but something standard, maybe 4 feet? Grab a tape measure
_________________
1979 Mexico Beige Westy auto
Dirty Dover, NH
Back to top
View user's profile Send private message Gallery Classifieds Feedback
Display posts from previous:   
Reply to topic    Forum Index -> Bay Window Bus All times are Mountain Standard Time/Pacific Daylight Savings Time
Page: 1, 2  Next
Page 1 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum

About | Help! | Advertise | Donate | Premium Membership | Privacy/Terms of Use | Contact Us | Site Map
Copyright © 1996-2020, Everett Barnes. All Rights Reserved.
Not affiliated with or sponsored by Volkswagen of America | Forum powered by phpBB