Engine Noise

[BRegal]

I have a very annoying rattle noise at rpms that vary from 1600-2200 and then stops when I back off. I haven’t attempted to push thru to higher rpms because I don’t want to take the chance of damaging the motor further. Hopefully the video I post will be good enough for someone to give me an idea of what’s wrong. Let me know if there’s any other info y’all need about the boat besides the following.
Thanks in advance!
Boat info,
1994 Regal Valanti 182
Mercruiser Inline 4 cyl
Bravo One Outdrive

 

[Bondo]

Ayuh,..... Welcome Aboard,..... Give Us some back-story on the boat,......

'n I really doubt it's a Bravo drive,......

 

[Scott Danforth]

is this a new to you boat?
did the issue just start?
when was the last time you pulled the drive for the annual maintenance?
when was the last time you inspected the exhaust flapper?

 

[alldodge]

Thinking alternator fins

 

[BRegal]

It is a new to me boat. I purchased it at the end of last boating season and spent the winter gutting the interior. Finally got that all finished and took it out to hear this problem.

Bondo, you are correct sir, it is an Alpha One drive. Sorry about that. I don't have any history on it and the owner was moving out of state at the time of purchase.

Mr. Danforth, I have not done any in depth maintenance on the engine/drive other than a tune-up. As far as I know this is a new issue. Or the previous owner neglected to mention it. I did not hear it on the test drive.

AllDodge, I have been told it might be an accessory issue. I'm going to attempt to remove the belts and do a short burst to see if the noise continues next.

 

[BRegal]

Hopefully I can get out on the water tomorrow and test some other things, but I'm not sure how much play should be in pulleys but there was a little movement/noise in this one. What do y'all think?

 

[alldodge]

I don't see that as an issue