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Break line specs #1637838
29/12/2019 12:19
29/12/2019 12:19
Joined: Sep 2010
Posts: 130
The Netherlands
J
jaaps2 Offline OP
Club Member 1560
jaaps2  Offline OP
Club Member 1560
On a journey
J

Joined: Sep 2010
Posts: 130
The Netherlands
Hi,

In case I have to make a new brake line and since I want to make it according to the orginal specs.

What is the size and the kind of flare?

- 4,75 or 5 mm diameter?
- Thread M10?
- Flare DIN, SAE Single or SAE double?
http://petesakcobra.blogspot.com/2015/10/brake-lines.html

Thanks,

Jaap


20VT, build in 1997, first used in 1998
https://youtu.be/mI0jZIIBc2w
Re: Break line specs [Re: jaaps2] #1637846
30/12/2019 00:12
30/12/2019 00:12
Joined: Dec 2005
Posts: 7,333
Lightwater, Surrey, UK
DaveG Offline
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DaveG  Offline
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Forum is my life

Joined: Dec 2005
Posts: 7,333
Lightwater, Surrey, UK
4.75, M10 and DIN - a quick search should show up threads like this one


1996 Portofino 20vt & 2000 Pearl White Plus
1985½ & 2016 2017 Fiat 124 Spider + XF Sportbrake
Re: Break line specs [Re: jaaps2] #1637865
31/12/2019 16:36
31/12/2019 16:36
Joined: Sep 2010
Posts: 130
The Netherlands
J
jaaps2 Offline OP
Club Member 1560
jaaps2  Offline OP
Club Member 1560
On a journey
J

Joined: Sep 2010
Posts: 130
The Netherlands
@DaveG: Thanks for your reply. I had seen the topic you refer to, but this was not conclusive. I just measured at various places and new oem brake lines. I read 5mm, but could be due to the paint.

Last edited by jaaps2; 31/12/2019 16:55.

20VT, build in 1997, first used in 1998
https://youtu.be/mI0jZIIBc2w
Re: Break line specs [Re: jaaps2] #1637868
31/12/2019 17:22
31/12/2019 17:22
Joined: Dec 2005
Posts: 7,333
Lightwater, Surrey, UK
DaveG Offline
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DaveG  Offline
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Joined: Dec 2005
Posts: 7,333
Lightwater, Surrey, UK
The OE brake lines have a plastic coating which will take the OD to more like 5mm


1996 Portofino 20vt & 2000 Pearl White Plus
1985½ & 2016 2017 Fiat 124 Spider + XF Sportbrake
Re: Break line specs [Re: jaaps2] #1637872
31/12/2019 21:29
31/12/2019 21:29
Joined: Sep 2010
Posts: 130
The Netherlands
J
jaaps2 Offline OP
Club Member 1560
jaaps2  Offline OP
Club Member 1560
On a journey
J

Joined: Sep 2010
Posts: 130
The Netherlands
Thanks


20VT, build in 1997, first used in 1998
https://youtu.be/mI0jZIIBc2w
Re: Break line specs [Re: jaaps2] #1637888
01/01/2020 19:26
01/01/2020 19:26
Joined: Sep 2010
Posts: 130
The Netherlands
J
jaaps2 Offline OP
Club Member 1560
jaaps2  Offline OP
Club Member 1560
On a journey
J

Joined: Sep 2010
Posts: 130
The Netherlands
Next question while I'm cleaning and painting the rear brake callipers. I want to change the bleeding nipples.

They are M10, total length 28 mm, spanner size M11. The same dimensions as for the front callipers.

However, I see several thread sizes in webshops:
M10x1
M10x1.25
M10x1.5

Is e.g. this one correct?
https://www.autodoc.co.uk/abs/7800642

It has a smaller spanner size (10), is slightly larger and thread M10x1.50


20VT, build in 1997, first used in 1998
https://youtu.be/mI0jZIIBc2w
Re: Break line specs [Re: jaaps2] #1637898
02/01/2020 21:35
02/01/2020 21:35
Joined: Sep 2010
Posts: 130
The Netherlands
J
jaaps2 Offline OP
Club Member 1560
jaaps2  Offline OP
Club Member 1560
On a journey
J

Joined: Sep 2010
Posts: 130
The Netherlands
I checked the bleeding nippels with a standard DIY M10 nut and bolt. The thread of the nipple is finer than the standard. So M10x1.25 or M10x1.5. Does somebody have experience?


20VT, build in 1997, first used in 1998
https://youtu.be/mI0jZIIBc2w
Re: Break line specs [Re: jaaps2] #1637899
03/01/2020 00:00
03/01/2020 00:00
Joined: Dec 2005
Posts: 7,333
Lightwater, Surrey, UK
DaveG Offline
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DaveG  Offline
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Forum is my life

Joined: Dec 2005
Posts: 7,333
Lightwater, Surrey, UK
Sorry, I can't easily check, but even with a small ruler, if you count 4 threads yiu should be able to see if those 4 threads measure 4mm, 5mm or 6mm, corresponding to 1.0, 1.25 or 1.5?


1996 Portofino 20vt & 2000 Pearl White Plus
1985½ & 2016 2017 Fiat 124 Spider + XF Sportbrake

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