Yes this is head 1208. I have had some luck recently removing the material in the water jackets with a cement remover with a sugar base. It does not seem to harm the cast iron and I can leave it in a long time. It turns the material in the head to mush and I can rinse it out. As I remove the material I can see some to the porous spots that will leak. I am not sure how to go about fixing these spots. I will pressure check the head once I feel I have removed most of the material. Muggy weld sells a arc welding rod for cast Iron that might work on the porous spots. What kind of moroso stop leak are you using? Thanks.
