Brake pipes - help please

Cornishman

Cornishman

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After a lot of work, rear axle off, new shocks, paint job underneath etc I was just two small steps away from being back on the road, fit new front flex hoses and bleed it, sounds easy. The rear hoses took 5 mins!
I could not get the metal pipe to old flex hoses off, in the process I wrecked many of the metal pipes, I guess I am not the first to do this. So now I need to replace some of the metal pipes. From the hoses to the calipers and also some that go back to the servos, on a RHD there are pipes everywhere.
Are there any issues with joining what are already replaced copper brake pipes, or should I replace each entire section?
What tool to buy, the best reasonable price one appears to be a draper SAE expert, but are these DIN (metric) fittings? I guess that they are DIN so assume that this will not do the job, but don't know why of they are both 3/16 and the fitting is the correct thread?
Draper Expert 23312 SAE Hand-Held Brake Pipe Flaring Tool 3/16-inch.
Most other cheaper tools get dreadful reviews, or is that user error?
Thanks
C
 
Brake pipes

I have some automec copper pipes left over from a rebuild. Ther is almost a complete set for a UK E9.. PM. From the same rebuild I have a set of BMW fuel pipes front to back . Pre bent!
PM if you are interested.
 
Simufly said:
From the same rebuild I have a set of BMW fuel pipes front to back . Pre bent!
PM if you are interested.
Click to expand...

Simon, The pre-bent pipes, are they from BMW? It was my understanding that current pipes from BMW are not pre-bent. Are these NOS or who is the supplier for pre-bent pipes? Thanks.
 
Luis A. said:
Simon, The pre-bent pipes, are they from BMW? It was my understanding that current pipes from BMW are not pre-bent. Are these NOS or who is the supplier for pre-bent pipes? Thanks.
Click to expand...

\Luis

Try Classic tube and inline tube. They may have the patterns for your car in stainless or original material. They also custom bend so you can always se4nd your oldones to be copied.

I made all new lines for my car using tubing from auto zone. Looks great. The only thing I bought factory was the main line running the length of my car. I could have just as easily made my own if i had a long length, but I didn't look all that hard.. All that is needed is a double flaring tool and new fittings and of course a few lengths of different diameter pipe to bend around.
 
I bought brake lines that were made to the right length from Walloth & Nesch. I did have to bend them myself, but that was easy.
 
I've just replaced every brake pipe on my very early E24 .
There are two types of brake flares Din and Sae.

My E24 is DIN and I'd expect your E9 to be the same .
Some say that you can use the more common and cheaper SAE tool to make DIN type flares , they are wrong , I tried ....!
I use this tool and it has performed perfectly producing exact DIN flares .
http://www.ebay.co.uk/itm/Brake-Pip...t=UK_Hand_Tools_Equipment&hash=item3a8d16c7fa
One thing to remember is to get the correct matching DIN brake couplings for the pipe ends , they also have to have a edge matching face to achieve a perfect seal .

And one last thing , use Kunifer ( copper / nickel ) pipe instead of copper as it is much tougher and less prone to flattening if you are having to " finger bend " in areas where you cannot use a proper pipe bender .
HTH's and good luck .
Don
 
Don
Thanks, I deduced most of this and did buy the same tool. Now I just need to learn how to use it. I think it is a DIN single flare on the E9.
There is so much conflicting information out there on the web, and I am sure so much is in good faith as I expect if enough torque is used then they don't leak, just don't come apart again which is what mine suffered from.
Best wishes
C
 
Might help some
BMW brake pipes, part number, length (mm)

BMW M10 to M10 brake pipe lengths

P/N Length
34326755545 100
34326755547 149
34326755548 158
34326755320 162
34326755550 205
34326755551 214
34326755552 222
34326755553 240
34326755555 260
34326755556 270
34326755328 283
34326755560 310
34326755562 330
34326755563 340
34326755564 350
34326755565 360
34326755567 380
34326755569 400
34326755571 420
34326755306 448
34326755576 470
34326755578 490
34326766270 523
34323412744 544
34326755582 560
34326772472 606
34326755585 620
34326755586 645
34326772563 668
34326755588 685
34326755589 703
34326755591 751
34326755592 780
34326755594 829
34326755595 841
34326755596 862
34326755597 886
34326755598 900
34326755600 940
34326755601 963
34326755602 985
34326755314 1005
34326755604 1012
34326755607 1080
34326755610 1146
34326755612 1175
34326755616 1260
34306779187 1352
34326755622 1402
34326755623 1447
34322283835 1525
34326755342 1526
34326765639 1612
34326755633 1637
34326755634 1656
34326755636 1705
34326755638 1764
34326755640 1845
34326755641 1870
34326755643 1920
34326755646 1980
34326755649 2039
34326755650 2056
34326755651 2074
34326755653 2109
34326755654 2143
34326755656 2200
34326755657 2224
34326755658 2235
34326755660 2272
34326755663 2338
34326755664 2368
34326755666 2436
34326755667 2503
34326772506 2590
34326755670 2657
34326755671 2691
34326755673 2770
34326755316 2817
34326755674 2840
34326755121 2915
34326755680 2980
34326755683 3048
34326755684 3075
34326755686 3120
34326755689 3170
34326755693 3275
34326755695 3315
34326755700 3560
34326755344 3568
34326755703 3672
34321153845 3740
34326755706 3850
34326755712 4300
34326755715 4372
34326755716 4587
 
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