Ok, so the issue I had was the engine coupler. The outdrive,,, because it wasn't aligned properly to the coupler,, had created extreme pressure/inertia and compromised the coupler, causing the coupler to basically stress with the coupler bolts and flywheel..
We finally removed the engine and...
This is my noise, video below. I looked on other threads and forums and there saying it could be the flywheel and to check the starter. I could use some help here guys. Thanks.
https://youtube.com/shorts/ejTgRw6c_rQ?feature=share
Can anybody tell possibly what this knocking sound could be. It's coming by the driveshaft inside the engine by the stern. I'm thinking universal joint.
https://youtube.com/shorts/ejTgRw6c_rQ?feature=share