cracked pistons ,saw very little cracked blocks,they later coated piston crowns that helped but even so bores as earlier engines could be prone to wear,the same lubrication for bores is used on 200 and 300s and they have good much better bores /ringsI stand to be correct by those who know better but wasn't the turbo charging of the original block an unmitigated disaster by Landrover and forced them to do a lot of modifications. Cracked blocks etc?