use dremel cut off hweel to cuseth heads of eth bolts off easier than screwwing around with a torch.

as fo rethhead bolts sears has these bolt remover thing that work pretty well. They look liek normal impact sockets except they have helical groove cut in them. YOu pund em on and then use a wrench or and impact gun on reverse. It digs into eth head and works relaly well. you need a vise to remove eth bolt form eth bolt out socket once you remove it. YOu coudl try it on the exhaust too.

also if its supposed to be a 15mm head use a 14 or 13mm socket pound it on witha hammer and get cranking. EItehr get inpact bits or a bunch of normla one cus the normal ones will crack sooner or later.

and taht engine loosk damn ugly. He shodul bethinking long block anywa and sell that on ebay as is for $500...

WOW!! FUBAR!!!!!

A torch will not cut the cast iron. It just melts it. I say junk the heads. They're proably bad anyways. Why spend all that effort for a set of heads you can find used cheap?

I had this problem (not as bad) and I was able to air chisel the bolt heads off and pull the manifold off over the bolts. Forget about turning those with any socket. They will just crumble. After I got my manifolds off I was able to remove what was left of the bolts by hand. You should be able to remove head bolts by hand once you break the heads off of them as well. My heads were in pretty good shape though and I just reused them. I couldn't use a torch on mine because my 22' Scarab had carpeting in the engine compartment. I think that thing has been in salt water for sure. You can see where the riser has leaked on the outside so I just wonder if it is just as bad on the inside. Remove the risers and take some pics for us.

Roby

Keep us informed with pictures of more damage that you may find. I'm interested in your project.

Roby

I will take more picts.as soon as(if) we get the heads off:( :(

I would not want to chance rebuilding that engine. Who's to say how bad the internal walls are??? I have seen engine blocks that look better than that engine, that have rusted from the inside out!!:( Some serious electrolysis has been happening to that engine if it's been only in fresh water...
My 2c

If you need exhaust, I have both stock merc and eddie marine I'd let go for a good price. I might have a set of heads that would work. The parts are from various engines that I've put together over the past few years. All are in good shape. Let me know.

If it looks like that on the outside, I'd hate to think what it looks like inside.

Send it to a metal/machine shop and let them deal with it...