16 replies to this topic

[gazza82]

I've read about different type of master cylinders but as the search doesn't appear to work I was wondering what a "Black Tag" master was .. I believe it is off a 92-96 Rover Metro/100(?) and so far it seems to be a split system type.

It's vertically mounted over the servo which lays horizontally over the pedals.

Just checking that is correct?

Does anyone have a list of the different types available?

Edited by gazza82, 14 February 2022 - 01:54 PM.

[cal844]

No, a black tag is a late 70s early 80s cylinder that is now NLA.

For a 92 to 96 you need the green tag master cylinder with the servo that mounts directly to the MC.

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Edited by cal844, 12 February 2022 - 05:18 PM.

[nicklouse]

A black tag.
 
 
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Edited by nicklouse, 12 February 2022 - 08:45 PM.

[gazza82]

Different type of black tag ...

[Spider]

There was also a Vertical Tandem Black Tag. These were the same as the Green Tag Tandem cylinders, except they had imperial threads.

[gazza82]

So it looks like this is a tandem/split circuit master with metric threads .. that will work with the way I'm thinking .. just need to find the pressure limiters at less than £140 each!!

[cal844]

So it looks like this is a tandem/split circuit master with metric threads .. that will work with the way I'm thinking .. just need to find the pressure limiters at less than £140 each!!

Do away with the FAMwtf valve and fit an inertia valve at the rear

[gazza82]

So it looks like this is a tandem/split circuit master with metric threads .. that will work with the way I'm thinking .. just need to find the pressure limiters at less than £140 each!!

Do away with the FAMwtf valve and fit an inertia valve at the rear

If this is a Metro cylinder it appears to need two .. it's a split-system one outlet feeding RH front and LH rear, and the other outlet feeding LH front and RH rear. There is a valve in each side feeding rears.

[gazza82]

Now I know what I'm looking at this is the pipework schematic I probably need to replicate ..

 GRID000423_copy_265x337.jpg   42.7K   1 downloads

[nicklouse]

Errrm the Metro MC is nothing like the Mini set up. Mount differently for a start. And are a totally different split system. 
 

you dont seem to be telling all the info. We are presuming one thing but you seem to be talking about something totally different.

[gazza82]

Errrm the Metro MC is nothing like the Mini set up. Mount differently for a start. And are a totally different split system. 
 
you dont seem to be telling all the info. We are presuming one thing but you seem to be talking about something totally different.

Read my first post .. I stated there it was off a Rover 92-96 .. and I know it is nothing like a Mini which is why I was looking for advise/help.

It is destined for "Bitza", the Austin A35, so a hybrid system will not be a problem .. I'm just trying to decide which system to go with before I start to cut large holes where there aren't any. I've got a non-servo'd Mini pedal box, the Rover/Metro black tag/servo but with a cable clutch which is not what I want/need and another from another Metro that could have a hydraulic clutch (the bulkhead plate has the right holes/studs but came off an auto so is missing a vital pedal!).

At the moment my shell has nothing attached but will have discs up front and drums at the rear. What I didn't want to do is design the pipework for the wrong type of master cylinder. As usual the more modern Haynes manuals also only have have the info. Not one mention of the pipework layout or it would have been obvious.

I'm planning a day out at the Classic Car and Restoration Show next month so I'll try and find a few Metros there to look at and ask questions!

[Spider]

 

Errrm the Metro MC is nothing like the Mini set up. Mount differently for a start. And are a totally different split system. 
 
you dont seem to be telling all the info. We are presuming one thing but you seem to be talking about something totally different.

Read my first post .. I stated there it was off a Rover 92-96 .. and I know it is nothing like a Mini which is why I was looking for advise/help.

It is destined for "Bitza", the Austin A35, so a hybrid system will not be a problem .. I'm just trying to decide which system to go with before I start to cut large holes where there aren't any. I've got a non-servo'd Mini pedal box, the Rover/Metro black tag/servo but with a cable clutch which is not what I want/need and another from another Metro that could have a hydraulic clutch (the bulkhead plate has the right holes/studs but came off an auto so is missing a vital pedal!).

At the moment my shell has nothing attached but will have discs up front and drums at the rear. What I didn't want to do is design the pipework for the wrong type of master cylinder. As usual the more modern Haynes manuals also only have have the info. Not one mention of the pipework layout or it would have been obvious.

I'm planning a day out at the Classic Car and Restoration Show next month so I'll try and find a few Metros there to look at and ask questions!

 

 

Just remember to also take in to account the pedal ratio as well as the Master Cylinder Bore Size here too.

[gazza82]

I'm waiting for my "Go-to" man to return to the world .. he's isolating from this bl**dy Omicron .. then I'll be able to push on .. he's already used these masters in an A35 saloon and van. The saloon had over 140hp so needed good brakes! (1275 turbo!)

[Ethel]

What brakes/calipers do you have? 

 

That was plumbed in as a diagonal split. Earlier Metros, with 4 pot calipers, had a conventional 4 wheel circuit, with an extra circuit doing 1 pot each side up front.

 

A front/rear split with an inertia valve limiter, or FAM7821, would be ok.

[gazza82]

What brakes/calipers do you have?

At the moment I'm working with 7" Midget single pot calipers/discs, but I am looking at some more powerful and larger discs from Frontline Developments ... just need to sell a kidney!

That was plumbed in as a diagonal split. Earlier Metros, with 4 pot calipers, had a conventional 4 wheel circuit, with an extra circuit doing 1 pot each side up front.
 
A front/rear split with an inertia valve limiter, or FAM7821, would be ok.

Yes, seen that 4-pot setup .. the lower outlet seems to feed all the brakes in the normal way then the upper outlet to the second hose on each caliper.