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Austin Metro 1984 Hose assembly brake vacuum

JamesyCottony - 8/9/15 at 07:03 PM

Anyone have any idea where I can get a Brake servo pipe for a Austin Metro 1L 1984? Looked at local scrapie and online and no luck

minitici - 8/9/15 at 07:29 PM

The metal pipe with the banjo which screws into the manifold?

eBay Item

britishtrident - 8/9/15 at 07:40 PM

Do a search on eBay UK for brake servo hose.

JamesyCottony - 8/9/15 at 08:43 PM

Thanks for the replies, the thing is im not really sure how it fits on and work, there is a hole in the servo with a rubber grommit in and the other end is a threaded hold on the inlet manifold?

JamesyCottony - 9/9/15 at 02:30 PM

Anyone?

JamesyCottony - 9/9/15 at 02:42 PM

This is the manifold end with the banjo nut in:

and this is the Servo end, just a hole with rubber grommit:

Does the ebay item posted fit this? and if so what else do I need for it as the Haynes manual shows the servo end with a plastic plug that goes in to the grommet then a rubber pipe attaches to that

[Edited on 9/9/15 by JamesyCottony]

[Edited on 9/9/15 by JamesyCottony]

rash12 - 9/9/15 at 05:09 PM

try rimmer bros they are online im sure they will sort you out

JamesyCottony - 9/9/15 at 05:16 PM

Called them, they dont have any and say that there is no chance I can get new ones anymore, thinking of making my own

rash12 - 9/9/15 at 05:29 PM

the steel banjo bit on ebay 121749847605 and might be able to doctor this 381390804591 for the rest

[Edited on 9/9/15 by rash12]

[Edited on 9/9/15 by rash12]

rusty nuts - 9/9/15 at 05:50 PM

The part that fits into the servo is a one way valve, without the valve you will have problems . I would have thought the valve would be available from suppliers of classic car parts, the banjo fitting from eBay or possibly a hydraulic specialist, you don't need to use a metal pipe just use a length of servo hose DO NUT USE normal hose , it will collapse

JamesyCottony - 9/9/15 at 07:43 PM

Anyone know where I can get that non return valve? If I got eBay item: 381390804591 would it work as it is for a MPI 1998 mini whereas my metro engine is carb and 1984? I could just ad a one way valve in the line but how would I attach the servo pipe to the servo? Dad also suggested I use a bsp 90 degree taper instead of the banjo, surely this would work?

[Edited on 9/9/15 by JamesyCottony]

rash12 - 9/9/15 at 07:53 PM

maybe one of these ebay 251931228730

[Edited on 9/9/15 by rash12]

JamesyCottony - 9/9/15 at 08:08 PM

quote:
Originally posted by rash12
maybe one of these ebay 251931228730

[Edited on 9/9/15 by rash12]

Legend, this may work?! Thanks for everyone's help. Is there a point to using the banjo or could I use and tapered 90 degree connector and use a one way valve? Also which way would the one way valve work? I'm guessing it would be to lock pressure in the servo....

rusty nuts - 10/9/15 at 05:32 PM

The servo should not have any pressure, the servo woks on vacuum

JamesyCottony - 10/9/15 at 06:19 PM

So which way would the non return valve go? Also can i use any non return valve or does it have to be specific to gas (air)?

rash12 - 10/9/15 at 06:41 PM

rusty nuts - 10/9/15 at 07:21 PM

quote:
Originally posted by rash12

WRONG WAY

JamesyCottony - 10/9/15 at 07:23 PM

What's the physics behind which way it goes? Please

Dick Axtell - 10/9/15 at 07:27 PM

That shwn in the photo was produced by Alfmeier Prazision AG. Check out their web page here :-

http://www.afrna.com/Pages/EngineSystems.aspx

adithorp - 10/9/15 at 07:36 PM

quote:
Originally posted by Dick Axtell
That shwn in the photo was produced by Alfmeier Prazision AG. Check out their web page here :-

http://www.afrna.com/Pages/EngineSystems.aspx

Rusty is right though, the picture is wrong. Air is sucked out of the servo into the manifold. The valve stops it returning so holding the vac' in the servo. The arrows (just visible on the yellow bit) on the valve shows the direction the air can pass.

You should be able to find a servo pipe (usually plastic) at the scrappers with both the servo fitting and an in-line valve. You'd just need the modify the other end with a bit of servo hose and a banjo.

rusty nuts - 10/9/15 at 07:37 PM

The depression in the inlet manifold draws air out off the servo creating a vacuum ,

Must type quicker

[Edited on 10/9/15 by rusty nuts]

JamesyCottony - 10/9/15 at 07:40 PM

Thanks everyone for that, so go to the scrappys and look for any 1980's/1990's car and it should have a servo pipe on that I can just modify and use on the metro?

Dick Axtell - 10/9/15 at 07:57 PM

James, I may have one such NRV knocking about my lock-up. Will hopefully get it tomorrow.

JamesyCottony - 10/9/15 at 07:59 PM

Also if I cannot find one with a non return valve and so I need to make my own these are the parts I would need:

Plastic barbed elbow connector to go into servo (as posted by rash12 thank you)

Vacuum hose

Non return valve (can any valve be used for this? or does it have to be air specific?)

Banjo Tail (already have banjo bolt)

washers for Banjo

JamesyCottony - 10/9/15 at 08:01 PM

quote:
Originally posted by Dick Axtell
James, I may have one such NRV knocking about my lock-up. Will hopefully get it tomorrow.

Ahh cool, ok well no need to make a special trip just for it but if you have a working one that might be perfect. Thank you

40inches - 10/9/15 at 08:03 PM

I have a non return valve you can have. I also have a few banjo's, what size do you need?

Not quick enough, didn't intend to step on your toes Dick

[Edited on 10-9-15 by 40inches]

JamesyCottony - 10/9/15 at 08:05 PM

quote:
Originally posted by 40inches
I have a non return valve you can have. I also have a few banjo's, what size do you need?

5/8" if you have any that would be great mate

thank you! I have the banjo bolt just need the tail

[Edited on 10/9/15 by JamesyCottony]

40inches - 10/9/15 at 08:13 PM

quote:
Originally posted by JamesyCottony

quote:
Originally posted by 40inches
I have a non return valve you can have. I also have a few banjo's, what size do you need?

5/8" if you have any that would be great mate thank you! I have the banjo bolt just need the tail

[Edited on 10/9/15 by JamesyCottony]

Oooh! That's a big un' I know I have a 12mm one, possibly a 14mm. I will have a look tomorrow and get back to you.

JamesyCottony - 10/9/15 at 08:14 PM

Yea im not trying to seem ungrateful to anyone, just trying to sort the problem out .

I really appreciate everyones help genuinely, its lovely how all you more experienced guys and gals are helping out a 21 year old

JamesyCottony - 10/9/15 at 08:16 PM

quote:
Originally posted by 40inches

quote:
Originally posted by JamesyCottony

quote:
Originally posted by 40inches
I have a non return valve you can have. I also have a few banjo's, what size do you need?

5/8" if you have any that would be great mate thank you! I have the banjo bolt just need the tail

[Edited on 10/9/15 by JamesyCottony]

Oooh! That's a big un' I know I have a 12mm one, possibly a 14mm. I will have a look tomorrow and get back to you.

Would it be imperial or metric on a 84' metro? confusing because its at the point that they started to switch over to metric

Dick Axtell - 13/9/15 at 04:41 PM

Hi James. This Ford NRV example looks a bit different from the pic posted further back in this thread.

Ford_NRV

What I referred to as the "noses", are the extensions on either side, on to which the vacuum hose is fitted. Note the smaller dia, compared to the earlier example. Let me know if you still want this one.

40inches - 13/9/15 at 05:03 PM

Only have 12mm banjo. Sorry

JamesyCottony - 13/9/15 at 08:45 PM

quote:
Originally posted by Dick Axtell
Hi James. This Ford NRV example looks a bit different from the pic posted further back in this thread.

Ford_NRV

What I referred to as the "noses", are the extensions on either side, on to which the vacuum hose is fitted. Note the smaller dia, compared to the earlier example. Let me know if you still want this one.

Hi Dick,

Looks great, just one last annoying question, do you know the diameter of the noses please?

JamesyCottony - 13/9/15 at 08:45 PM

quote:
Originally posted by 40inches
Only have 12mm banjo. Sorry

No worries, thank you for looking mate

JamesyCottony - 15/9/15 at 07:26 AM

To be honest Dick whatever the size is will be lovely. Can I please have the NRV?