Brake master cylinder, anybody tried one of these?

Post by **leyther8008** » Tue Sep 02, 2008 4:50 pm

From an American web site this is apparently the master cylinder off a AMC of some sort dosnt look to hard to fabicate a bracket to suit cant find any dimensions unfortunatly and I know you cant judge from photos but looks feasable to me would give twin circuit brakes<br>

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Post by **bmcecosse** » Tue Sep 02, 2008 5:05 pm

You would have 'fun' making the hydraulic connections.

Post by **downsey** » Tue Sep 02, 2008 5:21 pm

Use an MGB master cyliner, you can mount it in the stock location.

Post by **millerman** » Tue Sep 02, 2008 7:38 pm

Shouldn't be too difficult to make connections; just drill holes in the chassis leg opposite connection

Post by **bmcecosse** » Tue Sep 02, 2008 8:17 pm

Rather you than me!

Post by **jonathon** » Tue Sep 02, 2008 8:18 pm

Why ?

Post by **bmcecosse** » Tue Sep 02, 2008 8:20 pm

Nightmare - trying to make connections through wee holes in the chassis leg. Not for me - but others feel free to carry on!

Post by **minor_hickup** » Tue Sep 02, 2008 8:22 pm

I was talking about this very thing with a chap who used to race moggies in NZ. He used a ford master cylinder with a remote tank. He made a bracket to fit it in the chassis leg and had to drill an extra couple of holes. Sounds like a good idea, but the main reasoning for it was to use a more suitable master cylinder bore for his brake setup to avoid the extra complication of a servo as well as the safety of a dual line braking system.

Post by **kennatt** » Tue Sep 02, 2008 8:43 pm

You could use any make if you can be bothered to take the time to fit and redo all the plumbing.Not for me though better things to do.

Post by **leyther8008** » Wed Sep 03, 2008 12:03 pm

Why ?
If thats aimed at me Johnathon I was in a car (mini) that drove into the back of a double decker bus due to a single circuit brake system failure, I still get nightmares about being trapped in the back because the shell distorted, ever since then I,ve made sure my cars have 'split circuit' brakes and all of them have apart from the moggie, if it was aimed at the bloke who didnt want to drill the chassis then I agree why not!

Post by **bmcecosse** » Wed Sep 03, 2008 1:11 pm

Don't panic - i'm sure it was aimed at me! Most things are!!

Post by **Welung666** » Wed Sep 03, 2008 1:17 pm

bmcecosse wrote:Don't panic - i'm sure it was aimed at me! Most things are!!

You got to stop wearing those t-shirts with targets on Roy ;)

Post by **jonathon** » Wed Sep 03, 2008 1:29 pm

My 'Why' was directed to BM.
I agree that a dual circuit system is the way to go and we are about to research the options available to do this or manufacture our own design, primarily because we will be also working on an ABS system to compliment the Zetec conversions.

Post by **leyther8008** » Wed Sep 03, 2008 1:40 pm

Thats excelent news there used to be an Austrailian adaption using a dual circuit master cylinder but I cant find any info about it anywhere, put me down for one of your kits Jonathon.

Post by **dunketh** » Wed Sep 03, 2008 4:42 pm

I've suffered numerous brake failures in my moggy. Dual circuit is definitely the holy grail in my book.
Could you not make the connections with some kind of flexi - attach them first then feed the hoses through the holes as you fit the cylinder?
Like you do with taps and flexible plumbing hoses.

Post by **bmcecosse** » Wed Sep 03, 2008 10:17 pm

Indeed - I suppose so - or even just sharp bends in the bundy pipe without kinking it, I suppose. But in all my Minor and Mini years - i've never had 'sudden' brake failure - there has always been some sort of warning - long pedal/spongey pedal that sort of thing. And anyway - that's what the handbrake is for! I did lose one half of the brakes in my TR7 - and I can tell you the (front) half that remained was bluddy useless. The pedal went very nearly to the floor and the the braking was just hopeless - the handbrake was far better at stopping the car. So don't put too much reliance on dual circuit brakes -always 'test' the brakes before you are going to NEED them.

Post by **Scott** » Thu Sep 04, 2008 1:45 am

You could always get a conversion kit like this one:

http://members.ozemail.com.au/%7Eminort ... 20PAGE.pdf

Nice and simple, fits in the original position & has a remote reservoir.

Post by **leyther8008** » Thu Sep 04, 2008 7:47 am

Thats the very kit I saw, I dont think the guy does them anymore, Jonathon do you reckognise what that master cylinder is off? or look to franchise them maybe?

Post by **jonathon** » Thu Sep 04, 2008 8:02 am

I'll look into it

I did see some VW items which looked very similar. Also found an electric powered brake servo !!.

Post by **downsey** » Thu Sep 04, 2008 8:57 am

Has anyone looked at the mgb master cylinder? Its dual circuit and small enough to fit into the chassis rail. I used it with the stock morris brake lines. The linkage is somewhat tricky between the pedal and the plunger but not really a huge deal. Also a remote reservoir needs to be used but also not a huge deal. Just my two cents. (All you series mm guys, if your looking for a good strong rear end and good front brakes, you should look into converting to the mgb rear end and mgb disc brakes. Coupled with the mgb master cylinder you'll have a "stop on a dime with 9 cents to spare" morris and still be able to keep the stock wheels. Not to mention have a much bigger variety of Japanese alloys to choose from.)