You are making an incorrect assumption in stating that any work done to one can be done to the others.
If you machine a block, you can only go so far until you reach a point where the cylinder walls are too thin, or hit a water jacket. Different blocks utilize different amounts of materials. You need to look at how far a block can be bored out safely. I am not familiar with KA, RB, and SR engines to know their maximum bore sizes, but I know that it is unlikely that all of them are the same amount.






Reply With Quote
