1991 Four Winns 200 with 5.8 L Ford V8 and OMC OD.
I was cruising the harbor on Sunday with friends and noticed overheating at the port exhaust elbow. The engine temp gauge was only slightly above the midpoint, so it was approximately 172 Deg F. The starboard elbow did not seem as hot.
I was expecting to find rusted and blocked passageways in the elbow, so I removed it. It was easy to do, remove 4 bolts and 2 hose clamps and the elbow, along with the round exhaust pipe comes out. See pictures
I think that I found a different cause. The hose from the thermostat housing to the exhaust manifold was very cloged and the outlet of the thermostat was rusted and had narrowed down to only about 1/4 of an inch.
Questions: As you can see on the picture. I have not seperated the elbow from the exhauts pipe. Any suggestions?
Has enyone tried cleaning out the rust with Evapo-Rust?
I'm considering that and replacing the hoses.
Below is a picture of the hose
I was cruising the harbor on Sunday with friends and noticed overheating at the port exhaust elbow. The engine temp gauge was only slightly above the midpoint, so it was approximately 172 Deg F. The starboard elbow did not seem as hot.
I was expecting to find rusted and blocked passageways in the elbow, so I removed it. It was easy to do, remove 4 bolts and 2 hose clamps and the elbow, along with the round exhaust pipe comes out. See pictures
I think that I found a different cause. The hose from the thermostat housing to the exhaust manifold was very cloged and the outlet of the thermostat was rusted and had narrowed down to only about 1/4 of an inch.
Questions: As you can see on the picture. I have not seperated the elbow from the exhauts pipe. Any suggestions?
Has enyone tried cleaning out the rust with Evapo-Rust?
I'm considering that and replacing the hoses.
Below is a picture of the hose
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