Brock Chobar
New Member
- Jan 9, 2018
- 18
- Boat Info
- 1992 370DB "Kara Jane" twin 7.4 Merc's. 10'6'' INMAR rib tender with a 20hp Honda.
- Engines
- 7.4 454 Mercruiser with Hurth trans
Hey Guy's!
So I have a 1992 370DB with twin 7.4 (454) mercruisers and Hurth 63 trans. A few weeks ago on a short run at about 2500 RPM we got a sudden bad shake in the boat from the Starboard side. At first my thought was "lost a trans". Throttle back and took out of gear. Checked trans oil, leaks ect. Had a slight tick but nothing bad. Back in gear and shook right away so I easly went from forward to reverse a few times thinking I had seaweed on the prop... but nothing surfaced. So we took off again and all seemed good. Yesterday we went out for a sea trial after tune ups and oil changes... Boat ran awesome! until we gradually lost power on starboard and couldn't get over 15mph. Turned out to be a lost engine.. Rod knock real bad. SO>> My question is before I drop in a new engine can a bad transmission cause engine failure?? If the trans is/was locking up? Has anyone had this issue? Its obvious the engine is bad now an the sake could have been when it spun a bearing but ive never heard odf a bad engine bearing causing a shake that bad although its possible. Last thing I want to do is drop an engine in and repeat.
Thanks! Brock.
So I have a 1992 370DB with twin 7.4 (454) mercruisers and Hurth 63 trans. A few weeks ago on a short run at about 2500 RPM we got a sudden bad shake in the boat from the Starboard side. At first my thought was "lost a trans". Throttle back and took out of gear. Checked trans oil, leaks ect. Had a slight tick but nothing bad. Back in gear and shook right away so I easly went from forward to reverse a few times thinking I had seaweed on the prop... but nothing surfaced. So we took off again and all seemed good. Yesterday we went out for a sea trial after tune ups and oil changes... Boat ran awesome! until we gradually lost power on starboard and couldn't get over 15mph. Turned out to be a lost engine.. Rod knock real bad. SO>> My question is before I drop in a new engine can a bad transmission cause engine failure?? If the trans is/was locking up? Has anyone had this issue? Its obvious the engine is bad now an the sake could have been when it spun a bearing but ive never heard odf a bad engine bearing causing a shake that bad although its possible. Last thing I want to do is drop an engine in and repeat.
Thanks! Brock.