so i finally finished my motor and got it running, boat runs great minus one issue. It has a weird vibration and im not sure if its just due to that big mountain motor in such a light layed up boat or if i have a motor that wasnt balanced properly???
its smooth as silk at idle, but in neutral when you rev it, itll throw a vibration throughout the boat, when driving it in between idling and putting a load on it it has that same vibration, once you plane it out and start opening her wings its smooth.
when i got back from the lake yesterday i pulled the bravo drive off and checked the gimble bearing and the alighment, everything checked out fine, fired the boat up with the drive off and the vibration is still there, its pretty minor i could just be being overcautious, but my buddy also noticed it.
the engine is a nautral balanced motor, dampner has no weights on it, etc.
the short block was balanced back east without the flywheel or balancer, figured that would be fine due to the engine being neutral balance.
anyone got any ideas for what to check?