Ok, a question for the older gentleman's or ladies. wanting to know please the correct colour or was it just the metal finish from factory for the hydrolastic fittings either side on the front bulkhead. thank you

Zinc Plated And clear passivated, Or as some call it Blue zinc

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" A Hundred Years From Now It will not Matter what my Bank Acount Was,
The Sort Of House I Lived in, Or The Kind Of Car I drove ... But The World May Be A Better Place
Because I was Once Important In The Life Of A Child"

sounds very serious for a bmc part, thank you John you need to write a book on this sort of stuff for us young blokes.

Way back in My day these were zinc plated to a thicknes of two tenths of one thou
in a solution where the decimal logarithm of the reciprocal of the hydrogen ion concentration expressed as gram ions per litre was 14
If My Memory serves me
That is a smart Ar*e way of saying The Ph was 14

_________________
" A Hundred Years From Now It will not Matter what my Bank Acount Was,
The Sort Of House I Lived in, Or The Kind Of Car I drove ... But The World May Be A Better Place
Because I was Once Important In The Life Of A Child"

Yeh, maybe just paint them silver? :lol:

John

Were Australians one silver and Uk ones gold. Being different because ours were made here by dunlop Australia?

Because I know i have seen NOS pommie bags with gold fittings.

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I May have made a mistake but I was talking about the fittings that joined the Displacers to the hydro Pipes at The front on the bulk head, And I do not remember any of these being Orange passivated

_________________
" A Hundred Years From Now It will not Matter what my Bank Acount Was,
The Sort Of House I Lived in, Or The Kind Of Car I drove ... But The World May Be A Better Place
Because I was Once Important In The Life Of A Child"

yes John I was asking about the fittings between the pipes and bags.

Oh ok, I think I have misunderstood. Im thinking about the nut connection attached to the bag on the end that then bolts to the long nut connection on the front bulkhead and then this bolts to the pipe.

You can see what i was talking about here from these pictures of some nos bags (but think i misunderstood )

Borrowed from the net thanks to mmallleck







well on a related question:

Because you cant really passivate these can you get a paint that looks like zinc passivate that you could spray on so it looks correct and will stop it from rusting? Im thinking like a clear paint with a bit of gold mixed in???

Brenton

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Brenton They can be plated on the hose, it is a matter of finding a plater that would go to the trouible.
however Your idea of painting them would work, I would get someone to mix some paint that will give a similar finish,
The displacers as I rembember, most Mini's had the blue zinc finish,, however around 1969-1970 more orange passivated parts started to appear on the Mini
The parts in The photo I would think are from the Parts and acc division
and is more likley to have the orange finish if they have a part Number stamped on them that starts with HY then they will be Aust Made any other number would be UK Made
Please always Rember that the Part Number on the packaging does not always match
the part number stamped on The Part

_________________
" A Hundred Years From Now It will not Matter what my Bank Acount Was,
The Sort Of House I Lived in, Or The Kind Of Car I drove ... But The World May Be A Better Place
Because I was Once Important In The Life Of A Child"

Whatever they plated those crimps with, it didn't stop them rusting...
The major point of failure on hydro displacers is the crimp/hose area.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Yes they do rust, But it Would have taken a fair bit longer to rust, than it would if it was not plated at all, Zinc Plating or Cad Plating gives a protective coating by sacrificial corrosion
The rear units do not have the problem as much as the front
because the front one often fills up with dirt and water

_________________
" A Hundred Years From Now It will not Matter what my Bank Acount Was,
The Sort Of House I Lived in, Or The Kind Of Car I drove ... But The World May Be A Better Place
Because I was Once Important In The Life Of A Child"

British sourced Hydro cars here had blue zinc (could possibly have been Cadmium) hose ends and fittings.

Al

Anybody know where you can buy these fittings (5/8 UNF tail nuts) new?
All I can find in Oz is brass nuts, for oxy hose connections.
Brass would work OK, until some gorilla overtightens them.. so I want steel nuts for the 8 bags I'm fixing.

Otherwise, I suppose I can Zn plate the old ones...

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Or Cd plate them but that would be a lot more expensive,
I just had a thought Kev If you are replating the fittings that are fitted to the displacer (The ones that Rust)
ask if they can do an olive drab dip They may call it some other name these days, However this Finish will last another 96 Hours in a salt spray test, with the same thickness of Zn or Cd That is a lot of extra protection

_________________
" A Hundred Years From Now It will not Matter what my Bank Acount Was,
The Sort Of House I Lived in, Or The Kind Of Car I drove ... But The World May Be A Better Place
Because I was Once Important In The Life Of A Child"