DBertram
New member
Does anyone know if you can bore a K3A engine block from the stock 65mm to the 68mm and utilize the stock K3B piston and rings. I recently bought a Mitsubishi S-373D tractor that has the K3A engine and it has some serious rust in cylinder 2 that I think can only be cleaned up by boring it out. I am assuming that the rods and wristpins are the same between the K3A and K3B. With this small bore increase, would anything need to be done at the injectors/pump? Thanks in advance for any help on this. Don...