Where do you get the original copper thrust washer BTA101?

don't know that you can get them in copper - but then all of the old diffs I've pulled apart have had fibre washers in them anyway

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did I tell you that I won a trophy?

There were copper ones early on. They were in the diff of my 1966 S, but mostly they are fibre now. Look at:
http://www.guess-works.com/Shop/Parts/d ... htm?id=174

and any local parts supplier, too.

I have always scrounged them out of old diffs. They will dry up one day though

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1963 Morris 850 Smoke Grey
1963 Morris 850 Shadow Blue
1965 Morris Mini Smooth Van
1966 Morris Mini Van
1969 Morris Mini Deluxe Resto
5/72 Clubman Gt

When you say dry up, you mean they will no longer be obtainable --- don't you. As they are already not available new.

Were only in 3 synchro boxes. I have put them in my MK 2 S box.
They are bronze not copper.

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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.

Correct.

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1963 Morris 850 Smoke Grey
1963 Morris 850 Shadow Blue
1965 Morris Mini Smooth Van
1966 Morris Mini Van
1969 Morris Mini Deluxe Resto
5/72 Clubman Gt

Are you sure they're bronze and not copper?

BTA101C
Minikingdom on line

Colour is too light for copper and they are hard.
I'm a machinist, I know the difference.

Note I am talking about the flat washers behind the side gears which are fibre on 4 synchro boxes.

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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.

Just wondering could these washers be sintered bronze?

Sintered bronze is brittle and porous. Mine are not. Look like sheet bronze.
Maybe are brass, but bronze is a better bearing surface.
Even brass would be better than fibre.

I don't like the currently sold fibre ones, they are too thick. Like the damned side cover gaskets are... grrr.
Why can't people make parts correctly.

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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.

Now I am confused "Brass" "Bronze" Sintered Bronze". Surely some here knows what material these are made of?

I believe the fibre washers are part number BTA101 and the copper the same but with a C suffix, as per the MKO link.

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ex-NSW Police 1970 MK II Cooper S
VMCI #43

winabbey-Do you have the dimensions for the copper thrust washers.