need to replace brake pipes

General E30 related discussions -
Please put technical questions in E30 Tech Help forum below

Moderator: martauto

SHAKEELE30
Boost Junkie
Posts: 3278
Joined: Mon Apr 04, 2005 11:00 pm
Location: CROYDON

Post Thu Jul 02, 2015 8:18 pm

Ive heard people using Kunifer/cunifer to replacing existing brake pipes, anyone know if this is the right stuff, if not where do i purchase it from?

http://www.ebay.co.uk/itm/Copper-Nickel ... 1497991458

And how much would i need to replace the existing brake pipe system?

would i need any other tools?

any other info would be of great help...
maxfield
Old Skooler
Old Skooler
Posts: 15186
Joined: Sat Nov 26, 2005 11:00 pm
Location: Mansfield

Post Thu Jul 02, 2015 9:36 pm

Yes that is the correct stuff. You'll also need a brake pipe flaring tool, I recommend this one

http://pages.ebay.com/link/?nav=item.vi ... ID=EBAY-GB

It's also worth buying the clips and also the clips that hold the brake pipe to the hose aswell from BMW.

How many brake lines are you replacing?
Image
SHAKEELE30
Boost Junkie
Posts: 3278
Joined: Mon Apr 04, 2005 11:00 pm
Location: CROYDON

Post Thu Jul 02, 2015 9:40 pm

think 2/3 need doing, but since im doing them, i might as well replace all of them...how many you think ill be needing
SHAKEELE30
Boost Junkie
Posts: 3278
Joined: Mon Apr 04, 2005 11:00 pm
Location: CROYDON

Post Thu Jul 02, 2015 9:41 pm

whats the flaring tool used for?
SHAKEELE30
Boost Junkie
Posts: 3278
Joined: Mon Apr 04, 2005 11:00 pm
Location: CROYDON

Post Thu Jul 02, 2015 9:46 pm

also just had a look at realoem, some of the clips are nla,

http://www.realoem.com/bmw/enUS/showpar ... Id=34_0150

http://www.realoem.com/bmw/enUS/showpar ... Id=34_0157

would it not be easier to buy the pipes from bmw, do they come already shaped up?
maxfield
Old Skooler
Old Skooler
Posts: 15186
Joined: Sat Nov 26, 2005 11:00 pm
Location: Mansfield

Post Thu Jul 02, 2015 9:48 pm

I'd probably buy 50meters if it's your first time doing it, you'll need some practice.

Where the brake pipe bolts to another component, there is a flared end so it seals correctly.
Image
maxfield
Old Skooler
Old Skooler
Posts: 15186
Joined: Sat Nov 26, 2005 11:00 pm
Location: Mansfield

Post Thu Jul 02, 2015 9:50 pm

The brakes pipes come the correct length, flare and with unions already on but the last time I bought them, was for an E46 and they wasn't exactly cheap.
Image
User avatar
BHadley
E30 Zone Regular
E30 Zone Regular
Posts: 902
Joined: Sun Sep 06, 2009 11:00 pm
Location: Newton abbot, Devon

Post Thu Jul 02, 2015 10:07 pm

Practice flareing the ends a good few times!

It's very annoying doing all the bends then cocking up the flare.

Also fit union first then flare..... That's annoying in the wrong order too!
bigbird76
E30 Zone Regular
E30 Zone Regular
Posts: 571
Joined: Sat Feb 16, 2008 11:00 pm
Location: Swansea Wales UK

Post Thu Jul 02, 2015 10:45 pm

Here is a guide using the tool mentioned

User avatar
ajay
E30 Zone Camper
E30 Zone Camper
Posts: 1041
Joined: Fri Nov 24, 2006 11:00 pm

Post Fri Jul 03, 2015 12:16 am

I am making the lines on my turd atm, not a standard E30 set up but pretty similar to a standard, you will need a brake pipe bending tool to create bends without flattening the pipe when you bend and a small pipe slice & ream tool to ream the inner & outer edges of your freshly cut pipe before flaring (din/ bubble flare)I practiced ( bin liner full of scrap) until i could bend and shape pretty well, i also made tenplates for the more challenging bits in cheap copper and test fitted them before attempting the final steel lines, the more effort the better the result.
Here's a few pic's of what im up to atm
Image[/URL]
Image
Image
Image
Image
Image
SHAKEELE30
Boost Junkie
Posts: 3278
Joined: Mon Apr 04, 2005 11:00 pm
Location: CROYDON

Post Fri Jul 03, 2015 12:23 am

Good job there ajay, how many metres did you end
Up buying? And what tools did you use?
Can these be used for fuel lines also?
User avatar
ajay
E30 Zone Camper
E30 Zone Camper
Posts: 1041
Joined: Fri Nov 24, 2006 11:00 pm

Post Fri Jul 03, 2015 12:41 am

I don't remember how many meters i bought but i did run out and had to get more( MK60 abs/dsc on my e30) so i have two rear lines instead of one, it all depends on how much you intend replacing, the brake lines are 4.75mm or 3/16, the fuel lines are 8mm but if the fuel lines you are thinking of replacing are standard you will have to get the barb crimped on the ends which is not worth the effort when the bmw fuel lines come ready shapped with barb & not too expensive, i would just buy that from the dealer tbh, ill take some pic's of the tools i'm using.
Image
Image
Image
User avatar
ajay
E30 Zone Camper
E30 Zone Camper
Posts: 1041
Joined: Fri Nov 24, 2006 11:00 pm

Post Fri Jul 03, 2015 10:30 pm

These are the tools i'm using to make the lines.
Image
Image
Image
User avatar
BHadley
E30 Zone Regular
E30 Zone Regular
Posts: 902
Joined: Sun Sep 06, 2009 11:00 pm
Location: Newton abbot, Devon

Post Fri Jul 03, 2015 11:14 pm

I used this ;
http://pages.ebay.com/link/?nav=item.vi ... ID=EBAY-GB

Taped old pipe to new and bent round my thumbs and fingers.
SHAKEELE30
Boost Junkie
Posts: 3278
Joined: Mon Apr 04, 2005 11:00 pm
Location: CROYDON

Post Sat Jul 04, 2015 10:18 am

Wow thats alot of tools!!! Ive ordered that flaring tool
That max recommended but not sure what the others are
Called and what use they have...
Demlotcrew
E30 Zone Team Member
E30 Zone Team Member
Posts: 13329
Joined: Mon Dec 20, 2004 11:00 pm
Location: East Anglia

Post Sun Jul 05, 2015 9:19 pm

Very impressive and professional install Ajay a‘aaaa