3JH2E Yanmar Mixing Elbow
We (Dave H.) cut a mixing elbow in half to see the internal structure and the build up of the blockage. This is an elbow off of a 3JH2E with about 2,000 hrs on the engine. The top is where the saltwater enters and then bottom is where the engine exhaust enters. You can see the build up and closure where the two meet. Also see the document library under ENGINES for the mixing elbow parts diagram and numbers:
PDF Here
http://ipyoa.com/docs/doc_download/6-3jh2e-mixing-elbow