Brake pipes

Post by **taupe** » Sat May 02, 2009 4:09 pm

Hi

Im just getting together all the nipples etc to replace the brake lines.

Im going to use Kunifer pipe and have an SP flaring tool to make off the ends.

Does anyone whose done this have a list of the original pipe lengths please.

Thanks

Taupe

Post by **Mogwai** » Sat May 02, 2009 8:36 pm

A method Ive used before if you don't have the original pipes to copy from Is to route some stiff electrical cable where the pipe will run this will give you an idea how long you need the pipe & will hold its shape when removed to make a copy from

Post by **DAVIDMCCULLOUGH** » Sat May 02, 2009 11:10 pm

I think its would work out as cheap to buy new ones, only £24.50 and they are ready made with new nuts which will give a good tight seal.
http://morrisminorspares.co.uk/shop/pro ... f53daac303

Just my opinion, I know some folk like the challenge of making!

Post by **bmcecosse** » Sat May 02, 2009 11:11 pm

Well done using Kunifer - it's slightly more difficult to form the ends, so be sure to apply a drop of brake fluid to the pipe end. And note the coarse thread on the rear axle pipes!

Post by **tingo** » Sun May 03, 2009 9:37 pm

Hi taupe,
see http://www.morrisminoroc.co.uk/index.ph ... d1f4dd50a8

Post by **taupe** » Sun May 03, 2009 10:13 pm

Thanks Tingo brilliant!!!
':D'

I have made up the front brake links already and will do the others when the brake fittings arrive.

Im very impressed with the SP brake flare tool its the older type with a big screw and is held in the vice. Its making great flares and is so easy.

I have to do the pipes on my MG as well now ive got the bug.

I did notice that DSN do a full minor set in cupro nickel for £17.95 plus vat which is not much more than the cost of a reel of Kunifer pipe but I wanted to do it myself - very satisfying.':D'

Post by **bmcecosse** » Sun May 03, 2009 10:34 pm

As long as you know which ones need single Op and which need second Op !

Post by **taupe** » Sun May 03, 2009 10:50 pm

Correct me if im wrong but if you look into the fitting the pipe is going to screw into and you see a cone pointing out its second op and if its a cone facing away its first op.

As a side issue I had quite a few brass banjos and I was confused to start with. I believe the one with the cone facing out goes on the master cylinder and the ones with the cone facing in are for the rear brake cylinder bleed nipples to screw in.

Post by **bmcecosse** » Sun May 03, 2009 10:52 pm

Correct! 10/10 for that boy!!

Post by **alex_holden** » Mon May 04, 2009 8:09 am

The new banjos you can buy are "cone facing out". It's not clear to me if they were originally all like that and over the years the bleed nipples alter the shape inside the back ones. I would recommend looking out for good second hand banjos, bolts, and nipples (and cleaning up your existing ones where possible), having had lots of fun and games with new ones weeping.

It's also possibly a good idea if you're fitting new copper washers with the banjos to anneal them first, in case they weren't done properly at the factory (not seen that myself but I've heard of someone else who encountered that problem).

Post by **taupe** » Sat May 09, 2009 5:43 pm

Hi

Ive made my new Kunifer brake pipes.

I confirmed that the correct nipples for the rear lines are 3/8" BSF.

The pipe lengths shown in tingos post seem fine . I also found the attached MOPROD details: the SPA ends are 3/8" UNF the SPN ends are 3/8" BSF

The number after eg SPN 52 for pipe A is the overall length in inches.

These are listed for all minors from 1957 to 1971

See photos!!

Post by **bmcecosse** » Sat May 09, 2009 5:50 pm

Well - the pipes to the front (ABCD)are definitely 3/8" UNF on any Minor I have dealt with - so should be SPA surely ?? The pipe 'E' - i'm not sure - but may have 3/8" BSF connection at the diff(can you confirm ?) and definitely has 3/8" UNF at the master cylinder.

Post by **taupe** » Sat May 09, 2009 6:05 pm

The two front brake link pipes that go into the wheel cyls are SPA and 3/8 UNF

My front tee has three 3/8" BSF tappings and one 1/8"BSP taper tapping for the brake switch.

The rear 3 way tee has two 3/8" BSF tappings and one marked UNF which is for the rear hose

My master cylinder connections are both 3/8" BSF

I have original Lockheed hoses Ref KL 57203 which have 3/8" BSF internal thread for the brake pipe end and 3/8"UNF male threads on the other end to fit the wheel cyls.

I guess that other sizes may have been used.

Post by **taupe** » Sat May 09, 2009 6:53 pm

My next job is to find some correct axle ties....

This looks promising!

http://www.buckle-clips.co.uk/buckle-ca ... s-ties.htm

Post by **alanworland** » Sat May 09, 2009 7:21 pm

Bit naughty I know, but I used large tie wraps for this - they have been on for some years and still seem fine! at least they wont corrode!

Post by **bmcecosse** » Sat May 09, 2009 7:35 pm

Never seen a Minor with all those BSF fittings - but maybe some were! I know none of mine have been like that. The flexis on my cars have ALL been UNF threaded - so the pipes going in have to match that. Are you saying you have special flexis which are UNF to suit the wheel cylinders - and BSF at the female end to match BSF pipes coming from the junction with the brake switch? I agree that it is 1/8" BSP. Even by your way - the pipe 'E' on that list above then would be mixed threads - BSF (?) at the master and UNF at the rear axle - since the flexi there is UNF you say ?
The ONLY BSF threads on my car are the two pipes on the rear axle - BSF at both ends. Everything else is UNF.

Post by **alanworland** » Sat May 09, 2009 7:57 pm

It was a while ago, but I remember BSF threads on mine - even the bleed screws!

Post by **taupe** » Sat May 09, 2009 7:58 pm

No the rear flexi male end is UNF and screws into the rear tee (which is marked UNF) the female end is BSF.

Not a special brake pipe but new old stock ? I also have two new old stock motaproducts ones listed on the pack as morris minor front and rear, these are also BSF female threads.??

As you say morris may have mixed and matched? The answer is check before you fit and dont force any as they should screw in by hand without using a spanner if the threads are clean.

My traveller is 1963.

Post by **bmcecosse** » Sat May 09, 2009 8:07 pm

Ah yes - the rear bleed screws are BSF to suit the rear cylinder arrangement - but fronts are UNF.

Post by **taupe** » Sat May 09, 2009 8:18 pm

I notice that BM list the BSF coarse thread nipples as 12 required which ties up with my fitment.

Incidenatlly I got my BSF nipples and cupro nickel pipe from Clarik Engineering Supplies in Fife and very pleased with the quality.