PSG-1
Well-known member
If you line the inside of that engine cowling with flame retardant soundproof foam, it will make a world of difference. There's an egg crate foam available from mcmaster-carr, very light weight, and very effective at reducing noise under the cowling.
This is how I have my boat set up, and to give you an idea of how quiet it is, when it's approaching, you cannot hear it, until it's about 100 ft away. Once I've gone past, the sound disappears once I'm about 500 ft away. That's very quiet, considering the average outboard motor traveling at speed can be heard at roughly 1/2 a mile.
This is how I have my boat set up, and to give you an idea of how quiet it is, when it's approaching, you cannot hear it, until it's about 100 ft away. Once I've gone past, the sound disappears once I'm about 500 ft away. That's very quiet, considering the average outboard motor traveling at speed can be heard at roughly 1/2 a mile.