Originally Posted by CC2MC
Mike205, is this something that you have done to yours before?
As Kyle stated in another post my OCD on my boat is 13 on a scale of 10. I inspect my riser manifolds every season. My riser/manifolds are approaching 18 years old. I have yet to pull off my exhaust manifolds because they do not show any sign's of seeping or leaking. I obsess about the oxidation occurring in the water jacket of my engine manifold and risers.
I have been treating my manifolds bolts every season to maintain them. At one point I will have to pay the piper and pull the manifolds. But until then oxidation and I will be battling it out.
If you can't get the manifolds to budge with simple means...it's time to get the professionals involved. The only thing I can think of is that there was some water intrusion or oxidation that worked it's way down the mating surfaces...now it needs to be broken loose. I would seek professional advice before applying to force or a strong blow from a hammer to brake it loose. Any boat owner should be ready to fork over $1K to repair an old engine. Maybe PM JIM at BAWS to get an opinion.
Madcityskier has over 2K hours on his original engine... my goal is to beat him..