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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16970
Location: San Diego, California
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 Posted: Fri May 11, 2012 1:56 pm Post subject: |
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And if I give you my address, can you send me seeds of the brake booster tree?
Sorry, I've smoked them all
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
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VW Type 2 1971 (3 ea.) 1978, 1969
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Hal9000
Samba Member
Joined: June 06, 2004
Posts: 159
Location: Flagstaff, AZ
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| Posted: Fri Jun 14, 2013 7:03 pm Post subject: |
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| Nice write up aeromech. One question. Are the front and rear vacuum lines just T'd together? Seems like the obvious choice but I haven't been able to find any good diagrams or details, and I don't have a late bus handy to look at.... |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51146
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Fri Jun 14, 2013 7:32 pm Post subject: |
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| Hal9000 wrote: |
| the front and rear vacuum lines |
Please elaborate, your question makes no sense.
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Rust NEVER sleeps and stock never goes out of style.
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16970
Location: San Diego, California
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| Posted: Fri Jun 14, 2013 7:39 pm Post subject: |
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| Hal9000 wrote: |
| Nice write up aeromech. One question. Are the front and rear vacuum lines just T'd together? Seems like the obvious choice but I haven't been able to find any good diagrams or details, and I don't have a late bus handy to look at.... |
Well, there is a front vacuum line and a rear vacuum line but they are in series with a hard plumbed pipe attached to the frame of the bus. No T involved.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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Hal9000
Samba Member
Joined: June 06, 2004
Posts: 159
Location: Flagstaff, AZ
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| Posted: Fri Jun 14, 2013 8:52 pm Post subject: |
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| aeromech wrote: |
| Hal9000 wrote: |
| Nice write up aeromech. One question. Are the front and rear vacuum lines just T'd together? Seems like the obvious choice but I haven't been able to find any good diagrams or details, and I don't have a late bus handy to look at.... |
Well, there is a front vacuum line and a rear vacuum line but they are in series with a hard plumbed pipe attached to the frame of the bus. No T involved. |
But since the early bus doesn't have the hard line, how did you plumb it for the conversion? (Sorry if I wasn't clear on that part... I'm converting my 70 right now. Just wrapping up the last few details so I can get it back on the road) Like I said, I can't find a diagram of the brake vacuum lines. I can see from the photos I've found that there's a vacuum hose leading back over the beam from the front fitting, but I don't know if it's just tied into the same line that connects to the rear vacuum fitting, or if it runs elsewhere. All the vacuum boosters I've ever dealt with only have a single port and route vacuum to both sides of the diaphragm internally. This setup is new to me and Id rather ask first and not risk guessing wrong and having to do things twice.
EDIT: Found a diagram: What I'm trying to figure out is where hose #72/fitting #67 connects to.
Last edited by Hal9000 on Fri Jun 14, 2013 9:23 pm; edited 2 times in total |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51146
Location: Surrey B.C. Canada, but thinking of Ukraine
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Hal9000
Samba Member
Joined: June 06, 2004
Posts: 159
Location: Flagstaff, AZ
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| Posted: Fri Jun 14, 2013 9:29 pm Post subject: |
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OK, so it IS just a vent then. That makes far more sense, but I read so many people calling it a front vacuum fitting (both here on thesamba and elsewhere online) that I got confused and headed the wrong direction in my thinking.
If I can't find a convenient place to route it into the body, I'm sure I have an old breather filter around that I can hook it to and stash somewhere out of the way.
Thanks for the help. |
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16970
Location: San Diego, California
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| Posted: Fri Jun 14, 2013 11:48 pm Post subject: |
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I use a small K&N filter with a short piece of hose sticking straight up from the vent.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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tootype2crazy
Samba Member
Joined: October 08, 2007
Posts: 1276
Location: St. Louis Missouri
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| Posted: Sat Jun 15, 2013 6:40 am Post subject: |
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Nice post. Though I don't have an early bay, I really enjoyed this thread. These kinds of articles break up the monotony of people asking questions they could easily answer with the search feature. Kudos!
_________________
air-cooled or nothing for me
1978 Sunroof Deluxe Bus (daily driver)
1978 Transporter (mom's, making into a camper)
1970 Single Cab 2.1 turbo/EFI 6 Rib, 78 front beam, vanagon backing plates on rear (project)
2001 GTI VR6 (wife's) |
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Rocknrod
Samba Member
Joined: November 02, 2004
Posts: 2157
Location: North Carolina
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| Posted: Sat Jun 15, 2013 8:14 am Post subject: |
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Aeromech,
Who did you use to rebuild the brake boosters?
Zach
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1971 Westfalia with a high top.
http://71vwbus.blogspot.com/ - Pictures and words... Oh My! |
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aeromech
Samba Member
Joined: January 24, 2006
Posts: 16970
Location: San Diego, California
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| Posted: Sat Jun 15, 2013 9:33 am Post subject: |
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| Rocknrod wrote: |
Aeromech,
Who did you use to rebuild the brake boosters?
Zach |
I found a place here in the San Diego area called Bush Power Brake Service.
http://www.yellowpages.com/national-city-ca/mip/bu...ower+brake
Last one cost me $154 out the door for the rebuild and a one day turn time.
_________________
Lead Mechanic: San Diego Air and Space Museum
Licensed Airframe and Powerplant Mechanic
Licensed Pilot (Single engine Land)
Boeing 727,737-200-300-400,757,767
Airbus A319,320,321
DC9/MD80
BAe146
Fokker F28/F100
VW type 1 1962,63,65,69,72
VW Type 2 1971 (3 ea.) 1978, 1969
VW Jetta
VW Passat
Capable of leaping tall buildings in a single bound |
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Rocknrod
Samba Member
Joined: November 02, 2004
Posts: 2157
Location: North Carolina
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| Posted: Mon Jun 17, 2013 7:17 am Post subject: |
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Thanks,
I'll give them a call.
Zach
_________________
1971 Westfalia with a high top.
http://71vwbus.blogspot.com/ - Pictures and words... Oh My! |
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hotrod 68
Samba Member
Joined: September 22, 2009
Posts: 7
Location: new orleans , LA
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| Posted: Mon Jul 29, 2013 7:03 am Post subject: |
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| thanks for the detail thread , I'm about to under go a conversion on my 70 |
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airschooled
Air-Schooled
Joined: April 04, 2012
Posts: 12722
Location: on a bike ride somewhere
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| Posted: Mon Jul 29, 2013 9:29 am Post subject: |
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| hotrod 68 wrote: |
| thanks for the detail thread , I'm about to under go a conversion on my 70 |
Cool- keep us updated! Are you going for power drums or a disc conversion?
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Learn how your vintage VW works. And why it doesn't!
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Mr Bubble Head
Samba Member
Joined: February 14, 2004
Posts: 56
Location: Victoria Australia
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| Posted: Thu Jun 26, 2014 5:18 am Post subject: |
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| great thread. I'm about to upgrade the brakes on my 73 westi which didn't come with a booster. I've converted the engine to a 2 ltr type 4 and have the vacuum line ready to use off the manifold balancer tube. I've all the parts ready to go including the beam. I'll see how it goes. |
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qball
Samba Member
Joined: April 25, 2011
Posts: 44
Location: Cary, NC
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| Posted: Mon Oct 13, 2014 3:15 pm Post subject: |
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aeromech,
I really appreciate this post. I happened upon a '71 and all of this was foreign to me and I couldn't find a lot of info in my books. I thought I'd sell it but you've inspired me to restore.
I have a question about the connection at the manifold. I will put up two pics of the engine that came with the Bus (the brakes were toast, in all regards; barely any line remained, just a bit shredded and broken but the check valve was there. It looks funky but I don't have a pic. Anyway, no line was connected at this nipple on the manifold, and I'm wondering why its diameter is so small. I put a slender Phillips screwdriver to compare. I would say it's 1/4" but I know it's metric. Does the line reduce from the larger diameter to make this connection, or is this for another purpose and just happens to be on this engine, which certainly isn't necessarily original, #AK104638.
Thanks again for your information |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51146
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Mon Oct 13, 2014 3:20 pm Post subject: |
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The nipple on a bus manifold is 12mm, sounds like you've got a Beetle manifold in there.
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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qball
Samba Member
Joined: April 25, 2011
Posts: 44
Location: Cary, NC
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| Posted: Mon Oct 13, 2014 3:21 pm Post subject: |
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[img]http://www.thesamba.com/vw/gallery/pix/1267420.jpg[/img]
I've never poste pics; don't know if this will work. Let's check. |
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qball
Samba Member
Joined: April 25, 2011
Posts: 44
Location: Cary, NC
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| Posted: Mon Oct 13, 2014 3:27 pm Post subject: |
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Now hold on, you gotta gimme a minute to show the pictures!
Obviously, you don't. What would you suggest? Will the proper manifold be hard to find? If not, that's what I'll do. If I HAD to, do you think I could tap this? |
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busdaddy
Samba Member
Joined: February 12, 2004
Posts: 51146
Location: Surrey B.C. Canada, but thinking of Ukraine
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| Posted: Mon Oct 13, 2014 3:44 pm Post subject: |
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That's an altitude compensator/decel valve port, the brakes connect under the carb:
_________________
Rust NEVER sleeps and stock never goes out of style.
Please don't PM technical questions, ask your problem in public so everyone can play along. If you think it's too stupid post it here
Stop dead photo links! Post your photos to The Samba Gallery!
Слава Україні! |
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