Whats the limit for an old AX block Toby ??
I think the above is possible on old AX blocks. You're Rod's are getting near the cam with an 84mm stroke and need to be reduced in 4 places.
The bore walls need checking on all (AX) blocks to see what they will bore to - you need all the core plugs out and some method of coming down from above, I made a cut away set of vernier calipers to go into the water jackets. You can measure in to the front cylinder with a depth mic through the water pump hole and measure over the top of the block for the inside, you can do the same at the back through the core plug. You can measure through the side core plugs and do some maths - ideally you want 2.5 - 3mm thick walls. Much thinner than this they will burst or distort and not seal well. They need measuring all round, in as many places as possible - they're usually offset.
Thanks for the info, wheres my verniers and hacksaw
So have they been know to fail at 87mm on some AX blocks then ?
hang on...... not been around in a while, why you so intrested in the AX block is the fiest being treated to one?