exhaust manifold replacement suggestions

The hard part is done, which is taking off my old risers and manifolds. Now I plan on buying a new pair of manifolds and want to know your best suggestions. I am looking for the best replacement part on my 1988 SN2001 that has a ford windsor 351 and the original manifolds are black and say pleasure craft V8 or something like that. Money is an object so I on a budget but I dont want to cheap out? Can someone recommend a replacement? Should I stay away from the single bolt per exhaust port ones? Will they bolt up to my existing risers?

Whats wrong with those?

Too bad they look in nice shape. If you don't buy the PCM's again I'm not sure that your risers will fit other brands,you will have to ask

$172/ea with the 10% discount

Brought it to a boat yard and they tried welding them with three different type of rods. None worked. They were also on the boat at the time. They said they could do it they were off the boat and did not have to try and weld overhead as the cracks were on the bottom. I figured if I could get them off I'd just replace them. Ski dim sent me my tracking info. I should have the PCM replacements on Thursday.

UndercoverPoe wrote: Brought it to a boat yard and they tried welding them with three different type of rods. None worked. They were also on the boat at the time. They said they could do it they were off the boat and did not have to try and weld overhead as the cracks were on the bottom. I figured if I could get them off I'd just replace them. Ski dim sent me my tracking info. I should have the PCM replacements on Thursday.

You can't weld them in place!!! You have to bake/heat them then use nickle rod in short stitch welds. It has to be nickle rod because their cast.

UndercoverPoe wrote: Either way nut to these old cracked manifolds. As soon as I take the brass elbows off I'm throwing them out unless someone sees a use for them beyond boat anchors.

Post in the parts for sale section. Chances are high that they are usable and certainly weldable by someone who knows how to weld or braze. So, who's the "boat yard"? We sure don't want anyone taking a welding project to them!!

Cast iron usually has a lot of stress in it already. So when you heat it unevenly, you can propagate old cracks, or create new ones relatively easily. The proper way to weld cast iron is to heat the entire piece to the same temperature and let it cool slowly. That's impossible to do "in place". But sometimes you can defy the laws of physics and get away with it: sometimes welding cast iron in place can close the crack, and it will stay closed. Sometimes. Then again, it just might crack again from the initial crack when you heat it up again. You just can't predict that. So sometimes it's worth trying. Other times it doesn't work out that way. You just can't tell until you try. Welding upside down is hard for anybody. By the way, brazing isn't the same process, but can sometimes produce a serviceable (read: lasting) repair. So maybe the manifolds still aren't complete junk to somebody on a budget who wants a little practice and isn't afraid to give them a shot.