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viiking
Samba Member
Joined: May 10, 2013
Posts: 2972
Location: Sydney Australia
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 Posted: Sun Sep 29, 2024 4:51 pm Post subject: Re: 67 brake reservoir questions |
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[quote="scrivyscriv"]
| Eric&Barb wrote: |
| Agreed on the DOT5, but it is still good to bleed once each wheel once a year to flush out any water that will settle into the lowest points of the brake system. |
Have a read of this thread, taking particular note of Ray Greenwood's explanations.
There are SOME situations and climates where water can accumulate at the low parts of the system and cause corrosion.
https://www.thesamba.com/vw/forum/viewtopic.php?p=10047758
_________________
1968 1500 RHD Lotus White Beetle since birth. In the hospital for major surgery
1966 Lancia Flavia Pininfarina Coupe - in the waiting room
Discharged: 1983 Vanagon, 1974 1800 Microbus,1968 Low Light,1968 Type 3 |
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viiking
Samba Member
Joined: May 10, 2013
Posts: 2972
Location: Sydney Australia
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| Posted: Sun Sep 29, 2024 5:02 pm Post subject: Re: 67 brake reservoir questions |
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| Eric&Barb wrote: |
| viiking wrote: |
And to totally confuse everyone.
FOR SOME OF US WITH DUAL MASTER CYLINDER FACTORY DISC BRAKES e.g.Euro Beetles.
Bleed the rears first then the fronts. |
Except for not talking disc brake overseas beetles.  |
Absolutely true. But I want to get the message out there because the issue of so many people having issues with brake problems, perceived master cylinder quality etc is concerning given that how important brakes are to our cars.
I jump into those conversations whenever I can.
And when in future when people search for issues there are some from non-North American countries that may not know of the difference.
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1968 1500 RHD Lotus White Beetle since birth. In the hospital for major surgery
1966 Lancia Flavia Pininfarina Coupe - in the waiting room
Discharged: 1983 Vanagon, 1974 1800 Microbus,1968 Low Light,1968 Type 3 |
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Eric&Barb
Samba Member
Joined: September 19, 2004
Posts: 25377
Location: Olympia Wash Rinse & Repeat
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| Posted: Sun Sep 29, 2024 6:35 pm Post subject: Re: 67 brake reservoir questions |
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| viiking wrote: |
Absolutely true. But I want to get the message out there because the issue of so many people having issues with brake problems, perceived master cylinder quality etc is concerning given that how important brakes are to our cars.
I jump into those conversations whenever I can.
And when in future when people search for issues there are some from non-North American countries that may not know of the difference. |
Absolutely, and appreciate you mentioning that.
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In Stereo, Where Available! |
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kingjason2
Samba Member
Joined: December 27, 2005
Posts: 45
Location: Dallas,TX
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| Posted: Thu Oct 10, 2024 6:58 pm Post subject: Re: 67 brake reservoir questions |
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| I thought surely I was mis reading DOT 5 but nope you guys were all in. Why not 5.1? It is better then 3 and 4 but compatible with both. I have switch my motorcycles over to it and thought about the beetle but just figured good ole 3 was fine. |
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Eric&Barb
Samba Member
Joined: September 19, 2004
Posts: 25377
Location: Olympia Wash Rinse & Repeat
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| Posted: Thu Oct 10, 2024 7:26 pm Post subject: Re: 67 brake reservoir questions |
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| kingjason2 wrote: |
| I thought surely I was mis reading DOT 5 but nope you guys were all in. Why not 5.1? It is better then 3 and 4 but compatible with both. I have switch my motorcycles over to it and thought about the beetle but just figured good ole 3 was fine. |
https://armorlubricants.com/blog/brake-fluids-differences/
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In Stereo, Where Available! |
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scrivyscriv
Samba Electrician
Joined: October 04, 2011
Posts: 3200
Location: Memphis
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| Posted: Thu Oct 10, 2024 8:35 pm Post subject: Re: 67 brake reservoir questions |
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Brake fluid discussion is in the same realm as oil discussion - everyone is pretty much convinced their own preference is the best!
I don’t have a problem with DOT 3/4. It has worked faithfully for decades. DOT 4 is probably a better choice for disc brakes; I don’t know enough about 5.1 to put my $0.02 in other than saying it’s overkill with drums. But that’s okay.
The reason I am using DOT 5 silicone-based is for fluid spills or leakage when flushing and bleeding the system. I don’t want my chassis powdercoat or paint to wrinkle. I’ve seen the damage that happens; specifically in the napoleon’s hat on beetles, when DOT 3/4 fluid leaks around the master cylinder pushrod and into the chassis structural member. It eats the paint and allows (or causes, not sure) severe corrosion to set in completely undetected.
Otherwise 3/4 is completely fine.
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Robert in Memphis
Dünkelgrügen 1967 Java Green bug thread
Engine rebuild thread
If you're ever in the Memphis area, you are welcome to stop by for advice and help. |
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kingjason2
Samba Member
Joined: December 27, 2005
Posts: 45
Location: Dallas,TX
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| Posted: Thu Oct 10, 2024 11:06 pm Post subject: Re: 67 brake reservoir questions |
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| When I was swapping out the clutch slave on my 1125 and flushing the system I did think, why the heck is brake fluid so messy. Like you can never do anything with out spilling it or something. So, I can dig that. I just pretty much replaced my entire system so I am not worried about it anymore on the beetle. I will give the nose a shot of Ospho when I am done and won't worry about it. I was never building a show car so not real concerned with it. |
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aquifer
Samba Member
Joined: August 30, 2021
Posts: 176
Location: Nebraska
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| Posted: Fri Oct 11, 2024 1:51 pm Post subject: Re: 67 brake reservoir questions |
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It's proving to be a challenge to find a brake reservoir hose that's truly a good fit for the reservoir's steel lines. Quarter inch hose is plenty loose, although it would probably snug up fine with a hose clamp since there is no pressure.
It really needs to be 3/16" hose though, but no such hose exists for brake fluid that I've been able to find.
So.....
Since I'm going to make the switch to DOT 5, can I just use a regular 3/16" rubber fuel hose? I have two hose barbs that are 1/4 on one end and 5/16 on the other. I think the 3/16 hose will go on the 1/4" side if I talk nice to it. Then I'll run the 5/16 hose to the m/c.
I'm banking on the fact that DOT 5 won't damage a regular fuel hose, and that I'll be the only owner forever, so I'll know not to put DOT 3 or 4 in it.
So before I commit to the plan, does that sound workable as far as fluid compatibility?
_________________
Current hobby vehicles:
1967 Beetle
1973 Beetle
1998 Jaguar XJR, restored myself, in near-immaculate condition |
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Eric&Barb
Samba Member
Joined: September 19, 2004
Posts: 25377
Location: Olympia Wash Rinse & Repeat
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kingjason2
Samba Member
Joined: December 27, 2005
Posts: 45
Location: Dallas,TX
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| Posted: Fri Oct 11, 2024 6:20 pm Post subject: Re: 67 brake reservoir questions |
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| aquifer wrote: |
It's proving to be a challenge to find a brake reservoir hose that's truly a good fit for the reservoir's steel lines. Quarter inch hose is plenty loose, although it would probably snug up fine with a hose clamp since there is no pressure.
It really needs to be 3/16" hose though, but no such hose exists for brake fluid that I've been able to find.
So.....
Since I'm going to make the switch to DOT 5, can I just use a regular 3/16" rubber fuel hose? I have two hose barbs that are 1/4 on one end and 5/16 on the other. I think the 3/16 hose will go on the 1/4" side if I talk nice to it. Then I'll run the 5/16 hose to the m/c.
I'm banking on the fact that DOT 5 won't damage a regular fuel hose, and that I'll be the only owner forever, so I'll know not to put DOT 3 or 4 in it.
So before I commit to the plan, does that sound workable as far as fluid compatibility? |
This made me so mad the other day. I told my wife, why in the heck would you advertise this thing as an upgrade, and you know one is 5mm and the other is 7mm, not tom mention the sliding blue cover. I had some professional clamps I put the juice too and they fixed it. If it makes you feel any better, I got all my brakes and lines replaced, disc on the front, and while I was fixing the clutch tube in the tunnel I bumped the center long hard line a couple of times. I was finishing up my last round of bleeding and thought, why is it wet on the floor. Ruptured that dude at the hold down clip. I was so exictied I was going to get to drive it......Meh, at least the clutch works now. |
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aquifer
Samba Member
Joined: August 30, 2021
Posts: 176
Location: Nebraska
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| Posted: Mon Oct 21, 2024 11:49 am Post subject: Re: 67 brake reservoir questions |
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I found a solution to the reservoir to master cylinder hose sizing issue for a 67.
Here is a picture of the parts laid out with the part numbers visible for anyone who sees this post in the future.
The 7mm hose fits tight on the master cylinder hose barbs, and the 5mm hose fits tight on the reservoir steel lines. The WW website doesn't specifically say that these are 5mm, but they are. Note that 1/4" is too big, they need to be 5mm. I found the brass stepped hose barbs on Amazon (3/16” to 5/16”).
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Current hobby vehicles:
1967 Beetle
1973 Beetle
1998 Jaguar XJR, restored myself, in near-immaculate condition |
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08west
Samba Member
Joined: June 26, 2013
Posts: 10
Location: Tyne & Wear, UK
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| Posted: Wed Dec 04, 2024 2:09 pm Post subject: Re: 67 brake reservoir questions |
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I used a '67 reservoir from WW when converting my '65 to dual circuit. This is how I solved the different pipe diameter problem. The WW reservoir came with copper tails. I already had the the larger OD copper pipe, so crimped it to size in a vice, using a screw as a former, then soldered it on.
That was 4 1/2 years ago, and no leaks. Though TBH aquifer's adapter barbs might be a better solution. |
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