The block is also badder than first though.

Had an engineer come and have a look at it.

Its actually worse as the corrosion leads into the piston barrel.

I have been advised to JB weld this area and it should last until the summer.

In the meantime I will buy a block, strip it, get it checked out, rebuild the shells and bearings and then put that in when the weather is better.

I'll then have a rebuilt bottom end and a flat head.

Peter, I am buying a new radiator.
