timjet
Guru
- Joined
- Apr 9, 2009
- Messages
- 1,920
I was out the other day and while doing my post run inspection I found my port engine mount not looking right. The first picture shows the 2 locking nuts about 1/2 " above the mounting plate. I don't know how long it had been like this, maybe since I bought the boat 3 years ago I can't say.
Thinking this does not look right I tighten the nuts so they were tight against the mounting plate, the second picture shows how they are now.
I ran the boat for about 2 engine hours with no issue. Then when I tried to use the boat 6 weeks later I could not get above 1500 rpm and got heavy black smoke. Back at the dock I did some diagnostic work and eventually determined that the shaft would not turn easily. The diver that I hired said the prop shaft where it enters the hull does not go into this hole through the center but is off to one side slightly. There is a standard stuffing box on the shaft just inside the boat. He also said he could not turn the shaft while he was under the boat, but with difficulty could turn the shaft if he grabbed the prop to do so. The other shaft he said turns easily.
So I'm thinking that when I tighten those engine mount nuts I did something to mess up the alignment.
Any suggestions on where to start to fix this?
The third picture shows the stuffing box.
Thanks guys.
Thinking this does not look right I tighten the nuts so they were tight against the mounting plate, the second picture shows how they are now.
I ran the boat for about 2 engine hours with no issue. Then when I tried to use the boat 6 weeks later I could not get above 1500 rpm and got heavy black smoke. Back at the dock I did some diagnostic work and eventually determined that the shaft would not turn easily. The diver that I hired said the prop shaft where it enters the hull does not go into this hole through the center but is off to one side slightly. There is a standard stuffing box on the shaft just inside the boat. He also said he could not turn the shaft while he was under the boat, but with difficulty could turn the shaft if he grabbed the prop to do so. The other shaft he said turns easily.
So I'm thinking that when I tighten those engine mount nuts I did something to mess up the alignment.
Any suggestions on where to start to fix this?
The third picture shows the stuffing box.
Thanks guys.