Rear brake pipe

[Bill_qaz]

Series 5 circa 1962, can someone confirm thread and size of rear brake pipe fittings.
1/ rear of master cylinder 3/8 bsf ??
2/ connection to rear axle before flex
Finding conflicting info unf bsf .
just trying to get the parts ready as car is not at home. Thanks

[olonas]

I have just checked a n.o.s. genuine Lockheed rear cylinder and the pipe connection into that is definitely 3/8" B.S.F..

[Bill_qaz]

Thank you, 1 down and one to go
Into the banjo bolt not the cylinder itself or are the the same?

Screenshot_20240517-130706_Chrome.jpg (14.86 KiB) Viewed 315 times

[Bill_qaz]

Anyone know flex end

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[paul 300358]

Have a look at https://www.mmoc.org.uk/Messageboard/vi ... vo#p419930
Unfortunately Declan Burns drawing is missing

[Bill_qaz]

So does that also mean at the front the junction with stoplight switch it is BSF in from master cylinder and UNF out to left and right front brake?

[svenedin]

So does that also mean at the front the junction with stoplight switch it is BSF in from master cylinder and UNF out to left and right front brake?

No it is BSF both ends as far as I am aware. I replaced all of my braking system but I confess that I bought a Kunifer brake pipe set from Automec rather than try to make up my own pipes. The only pipes that are UNF are the bridge pipes between the front cylinders

Stephen

[Bill_qaz]

So does that also mean at the front the junction with stoplight switch it is BSF in from master cylinder and UNF out to left and right front brake?

No it is BSF both ends as far as I am aware. I replaced all of my braking system but I confess that I bought a Kunifer brake pipe set from Automec rather than try to make up my own pipes. The only pipes that are UNF are the bridge pipes between the front cylinders

Stephen

Thanks Stephen so all 3 pipes into the front junction are definitely BSF. I don't have bridge pipes as mine is disc brake fronts.

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[olonas]

I could be totally wrong, but are all the pipe connections 3/8" B.S.F. - except the front cylinders' transfer pipe and the male end of the flexibles (front and back)?
I have checked a flexible and the male end is 3/8"U.N.F. and the female end 3/8" B.S.F..
Also the front 4 way has 3 x 3/8" B.S.F and on top 1/8" B.S.P. (maybe N.P.T?). Plus whatever bolt size secures it to the car.

[olonas]

banjo.jpg (154.2 KiB) Viewed 223 times

All 3/8" B.S.F..

[jaekl]

A caution regarding the T on the rear axle and its flex pipe, early in the 1000 production the flex was changed to be the same as the front flex. That required changing the T from all BSF to UNF for the flex and BSF for the rigid pipes.

[Bill_qaz]

banjo.jpg

All 3/8" B.S.F..

Thank you, its the pipe from rear of cylinder as you have shown to the attachment to the rear axle flex that I needed to be sure of. As I maybe blanking the master with a 3/8 bsf bleed nipple. Then running a new rigid line from rear axle upto the front and T into the servo.

[Nickol]

I copied a diagramme that someone downloaded here a few years ago - It might have been DEclan Burns ?

Anyway it shows the connections and what thread they are supposed to be

Bremsen layout - Gewinde Verbindungen.jpg (551.71 KiB) Viewed 158 times

[Bill_qaz]

Thank you, I had found that but different specs are posted, I was not sure it was correct for my year. The thing I cannot locate for purchase is the T piece that has 2 bsf on 1 unf

Screenshot_20240519-171254_Samsung Internet.jpg (95.91 KiB) Viewed 152 times

[Bill_qaz]

Thanks now sorted, the one I wanted is same as rear axle and available from esm