Would a 68/69 cooper s have thin or thick flange block?

[pad4]

Just wondering if a 68/69 S would have a thin or thick flange block - I guess thin flange but you never know.

Cheers

PAD

[mk1]

Thick.

M

[251 ENG]

I think the change point is late 68 but have been told the works cars had them on 68 monte.

There are several different casting / machining variations on them

[Mini4Ever]

Although I am not certain about it, I am lead to believe that the changeover to the thick flange block coincided with the change to the 4- synchro boxes (about October 1968). Nevertheless, the thick flange blocks may have been introduced earlier, but all original untouched 4-synchro based engines that I have seen had thick flange blocks.

[GTOGREEN1969]

In Australia the change was in Apr/May 1969 with the move from the 9FSAY/3-synchro to the 9FXEY/4-synchro.