3 Bearing block interchangeable

[borchi1]

Good morning to all, from Italy!

I need an Austin seven expert but i feel i am in the right place =)

Here we are, after some problems my engine needs a rebuild, and the mechanic found my cylinder block is cracked between the two central cylinders.

Thanks to Jon on this forum i have found a good block, but mine is marked AF2 on the castings and the one for sale AF1.

My casting is 21.1.3 and the other one for sale is 25.7.3

Everything look the same, can anyone confirm they are interchangeable?

Thank you to everyone!

[Alan]

They are interchangeable.

[borchi1]

Thank you Alan!

[Austin in the Shed]

A lot of blocks are cracked between 2-3 cylinders.If it is cracked from the centre stud to the water transfer hole and possibly further it doesn't seem to be a problem.
If the cracks go from the stud to the cylinders,not so good.

[borchi1]

Thank you. As i am doing a professional rebuild, i am too afraid of something will go wrong, expecially as this is a Special with high compression head and more... prefer to have an uncracked one.