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SolarPoweredPickles Samba Member
Joined: May 13, 2009 Posts: 1252 Location: California
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Posted: Wed May 14, 2025 6:05 pm Post subject: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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Hi all,
I have a couple questions. Hoping someone can help mark my brake line kit. I'll most likely have extra, or need a couple more lines. This is the correct kit for my 61'. (last pic below)
I have a DCMC (67' only without need of spacer)
Rear end is Type E, Brians IRS conversion.
I will be running 1 brake light switch
4 wheel disc brakes (Oregon Jeff's Narrowed drop beam)
Here is the plan:
And if anyone can help label some of my lines, Id really appreciate it. Most of which will make sense as I plumb this thing, but curirous of thoughts, and if I may need extra parts.
Think I have it sorted, mostly, but always love some feedback, especially with safety and brakes.
Thanks all.
-P |
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pondoras box Samba Member

Joined: March 22, 2004 Posts: 1518 Location: Eerie PA
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Posted: Thu May 15, 2025 4:00 am Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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I’ve never used the Type E kit but I have done several IRS conversions and found out it’s much cheaper and easier to just make your own brake lines. Those kits are for stock buses and when you start converting the bus to IRS, dual circuit, and disc brakes it all changes. _________________ Looking for anything from Hal Casey Motors out of Hamburg New York, from license plate surrounds to matchbooks.
1961 23 Window (Bobo)
1965 11 Window (Zelda). https://www.thesamba.com/vw/forum/viewtopic.php?t=563183
1965 13 Window (Lucas)
1957 Oval ragtop
1960 hardtop
1964 hardtop
1965 hardtop
1988 Cabriolet VR6 conversion
Plus a lot of other rusty junk |
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Who.Me? Samba Member

Joined: July 14, 2014 Posts: 2495 Location: UK (South)
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Posted: Thu May 15, 2025 7:59 am Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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If you have a look on OACDP, you'll find the brake lines listed with their lengths.
Looks like you have a single circuit kit? I only see nine lines. You'd need ten for a dual circuit kit. (It uses an extra very short line between the MC and the front Tee.)
You've already marked up the long line from the MC to the rear Tee.
Assuming that's a single circuit kit, the three shorter ones in the middle of your picture look to me to be: -
Shortest one - the 'S' that connects from rear Tee on the right hand frame horn, to the rear right flexy. I found that one to be a bastard to get in, but I used the CSP kit.
The other two are likely to be the two lines that would normally link the two cylinders within the front drum (not needed in your case).
The remainder are therefore likely to be:-
The hard lines that connect the rear flexies to the rear cylinders (probably two of the three to the left of the ones I've described above). The third of those is therefore likely to be the front line from the MC to the left hand front flexy.
A longer line that connects the rear Tee to the right-hand rear flexy (loops up and over the gearbox) Not sure if that's the far left or the one next to it in your picture.
A long one that connects from the front Tee to the left hand front flexy (whichever of the left hand two isn't the one that loops over the gearbox). _________________ Andy
Looking for info on my truck's history. Are you from Campbell California or nearby. Do you recognise it? ... http://www.thesamba.com/vw/forum/viewtopic.php?t=636786 |
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pondoras box Samba Member

Joined: March 22, 2004 Posts: 1518 Location: Eerie PA
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Posted: Thu May 15, 2025 8:25 am Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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I know Type E uses their own proprietary trailing arms whereas the ones I’ve used make do with stock type 1 swing arms. With stock swing arms you need to fabricate your own hard to soft line junction points. That is what’s going to change from a stock hardline kit to what you’re going to need. Going to dual circuit I found that none of the premade lines fit anywhere well. If you could post up your finished instal on the swing arms I would appreciate it because I am considering the Type E kit for my next IRS conversion. _________________ Looking for anything from Hal Casey Motors out of Hamburg New York, from license plate surrounds to matchbooks.
1961 23 Window (Bobo)
1965 11 Window (Zelda). https://www.thesamba.com/vw/forum/viewtopic.php?t=563183
1965 13 Window (Lucas)
1957 Oval ragtop
1960 hardtop
1964 hardtop
1965 hardtop
1988 Cabriolet VR6 conversion
Plus a lot of other rusty junk |
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SolarPoweredPickles Samba Member
Joined: May 13, 2009 Posts: 1252 Location: California
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Posted: Thu May 15, 2025 12:09 pm Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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pondoras box wrote: |
I know Type E uses their own proprietary trailing arms whereas the ones I’ve used make do with stock type 1 swing arms. With stock swing arms you need to fabricate your own hard to soft line junction points. That is what’s going to change from a stock hardline kit to what you’re going to need. Going to dual circuit I found that none of the premade lines fit anywhere well. If you could post up your finished instal on the swing arms I would appreciate it because I am considering the Type E kit for my next IRS conversion. |
I'll post some photos for sure. My Type E kit is almost finished. Brian made a few changes to the kit, so I will actually have a couple extra 8" hard lines, maybe one of those will work for the front since I converted to Dual Circuit 4 wheel disc. I also saw that before I did the conversion that 1 extra front line would be needed. Brians making me a couple newer lines for the rear that are a hair longer as he made some mods on his newer kits, I am very close to having a roller, Type E Brians kit was super easy to install, I had to stare at it for a while until it made sense, I had so many swing axles before I didn't know the orientation of an IRS setup, but for most I would say it would be a simple day job, plus a day to paint it up, or powder coat it. I just painted mine with heavy duty rattle can.
Pics to come! And thanks for the info on the hard lines all, it's one of those projects, taking the obvious stuff, like the long front to back line first, and Brians kit came with it's own rear lines, etc. The more easy to put on parts that come off the bench, the easier and more sense it makes.
I plumbed my old 65' bus but that was in 2014, so its kind of new to my brain again, plus the conversion.
Will post some photos this week.
Thanks guys.
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BonTonRoulet Samba Member
Joined: September 29, 2020 Posts: 456 Location: Mississippi
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Posted: Thu May 15, 2025 8:33 pm Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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For what it's worth in the documents/posts I've seen in this forum when it came time to upgrade my 66 single circuit master cylinder to the "67 only" type dual circuit master cylinder and keeping my stock drum brakes on all 4 corners, with regard to your diagram labeled "top view":
Front and rear ports on the left side are where I have 2 brake light switches.
Front right goes to the rear brakes.
Rear right goes to a new T that goes to the front right and front left brakes.
Good luck! _________________ Never argue with an Idiot. They'll only bring you down to their level and beat you with experience. |
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SolarPoweredPickles Samba Member
Joined: May 13, 2009 Posts: 1252 Location: California
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Posted: Fri May 16, 2025 2:47 pm Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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BonTonRoulet wrote: |
For what it's worth in the documents/posts I've seen in this forum when it came time to upgrade my 66 single circuit master cylinder to the "67 only" type dual circuit master cylinder and keeping my stock drum brakes on all 4 corners, with regard to your diagram labeled "top view":
Front and rear ports on the left side are where I have 2 brake light switches.
Front right goes to the rear brakes.
Rear right goes to a new T that goes to the front right and front left brakes.
Good luck! |
Im glad you mentioned that, thats the route I was going to go. Then I got advice from a couple folks through here saying its ok to run one brakelight switch and ditch the need for a "T" up front. Im ok either route, I can't recall what I did when I had my 65' years ago. It was very similiar setup, except I didnt have 4 wheel discs on my 65' back then.
Not sure if one route is better than the other, but not running a second "T" and brake switch up front seems simpler? Safe is above all. Correct, well, this is far from stock. Safe #1. |
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BonTonRoulet Samba Member
Joined: September 29, 2020 Posts: 456 Location: Mississippi
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Posted: Fri May 16, 2025 6:23 pm Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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Maybe others will chime in, but seems like there is some built in "bias" to the master cylinder regarding which circuit actuates before the other. On a beetle or karmann ghia the master cylinder is oriented 180 degrees as compared to a bus. The front brakes are on the circuit farthest from the brake actuating rod and the rear circuit is closer to the actuating rod. That's why when you upgrade a single circuit master cylinder to the dual circuit master cylinder on a bus it just looks wrong to have the line to the rear brakes forward of the line(s) to the front brakes. Adding a T for the fronts works well at least with drum brakes as long as you keep the location of the T below the level of the master cylinder reservoir for air/bleeding reasons and the extra brake light switch gives you redundancy in that electrical circuit should you choose to wire them together. I'm suspect of that diagram in the first post.
Good Luck! _________________ Never argue with an Idiot. They'll only bring you down to their level and beat you with experience. |
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SolarPoweredPickles Samba Member
Joined: May 13, 2009 Posts: 1252 Location: California
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Posted: Sat May 17, 2025 3:22 pm Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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BonTonRoulet wrote: |
Maybe others will chime in, but seems like there is some built in "bias" to the master cylinder regarding which circuit actuates before the other. On a beetle or karmann ghia the master cylinder is oriented 180 degrees as compared to a bus. The front brakes are on the circuit farthest from the brake actuating rod and the rear circuit is closer to the actuating rod. That's why when you upgrade a single circuit master cylinder to the dual circuit master cylinder on a bus it just looks wrong to have the line to the rear brakes forward of the line(s) to the front brakes. Adding a T for the fronts works well at least with drum brakes as long as you keep the location of the T below the level of the master cylinder reservoir for air/bleeding reasons and the extra brake light switch gives you redundancy in that electrical circuit should you choose to wire them together. I'm suspect of that diagram in the first post.
Good Luck! |
I'll definitely read a bit more and see who chimes in, I've heard using a T, and hooking up the style in the first pic I posted were both acceptable methods, also, I failed to mention when I bought my 67' only DCMC from Brian at Type E, he did something to it prior to sending it out since I am running 4 wheel disc brakes, I can't recall what it was, removing something inside, or changing something? So maybe I'll ask him what he thinks or he may even pop onto this thread.
Right now I am just roughly getting all the lines where they need to go , then I will start threading things up, getting exciting.  |
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dtadpole Samba Member

Joined: November 15, 2012 Posts: 103 Location: Southern Illinois
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Posted: Tue May 20, 2025 2:03 pm Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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"I failed to mention when I bought my 67' only DCMC from Brian at Type E, he did something to it prior to sending it out since I am running 4 wheel disc brakes, I can't recall what it was, removing something inside, or changing something?"
Probably was the relief valves inside the master cylinder. That will allow you to have disc brakes. I had to remove the front 2 for my front disc brakes. _________________ 1965 velvet green walk-thru standard
scrappythebus.com
https://youtube.com/@dtadpole |
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SolarPoweredPickles Samba Member
Joined: May 13, 2009 Posts: 1252 Location: California
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Posted: Wed May 21, 2025 2:31 pm Post subject: Re: 4 Wheel Disc/ IRS rear/ New Brake Line Identify Help |
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dtadpole wrote: |
"I failed to mention when I bought my 67' only DCMC from Brian at Type E, he did something to it prior to sending it out since I am running 4 wheel disc brakes, I can't recall what it was, removing something inside, or changing something?"
Probably was the relief valves inside the master cylinder. That will allow you to have disc brakes. I had to remove the front 2 for my front disc brakes. |
Relief valves! Yeah! That's the one. Thanks.
So far I am aiming at going without a front "T" I've asked alot of peeps and it seems to be a split choice. But, when I finish my build I am having my fav shop do a thorough check of my build, work, and finalize the stamp of approval for road worthy, I'll also see what their thoughts are.
I Appreciate all the input. |
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