Hi
This weekend I am going to get the 2-Stroke out and prepare it for my next trip.
One problem I have is it's pretty loud at Idle which means I can't really hear other boaters when just sitting on the water having a chit-chat.
Has anyone added some kind of material to the inside of the cover?
My engine is 1999, but the previous model was quieter but I don't know why since they are pretty much the same blocks expect the casing all changed.
The hood has the standard foam.
James
Sound proofing Outboard
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James
- Mega Poster, I Really Need To Get Out More !
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Sound proofing Outboard
James
2015 F-Rib 360 married to a 1999 fully rebuilt 15hp 2 Stroke Johnson engine and 22 litre fuel tank.
Mods: Launch wheels, Towing Eyes, 2 Bench Seat Cushions, and 1 Bench Seat Bag
Boat name: Cichlid
2015 F-Rib 360 married to a 1999 fully rebuilt 15hp 2 Stroke Johnson engine and 22 litre fuel tank.
Mods: Launch wheels, Towing Eyes, 2 Bench Seat Cushions, and 1 Bench Seat Bag
Boat name: Cichlid
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PeterM
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Re: Sound proofing Outboard
OCA covers do a range of sound reducing covers ( developed for special forces) . I dread to think of the cost …. but experience really is that not much reduces the noise 
… You used to be able to get stick on sound deadening sheets for cars ( from halfords etc ) - but be wary of stuff inside the cowling as it can reduce airflow and get really really hot in there = catch fire . Generally air is drawn from the top back of the cowl to the bottom front of the engine where it goes 'in' ( to help cooling as it flows over the block & electrics etc and to reduce the risk of water ingress)
… You used to be able to get stick on sound deadening sheets for cars ( from halfords etc ) - but be wary of stuff inside the cowling as it can reduce airflow and get really really hot in there = catch fire . Generally air is drawn from the top back of the cowl to the bottom front of the engine where it goes 'in' ( to help cooling as it flows over the block & electrics etc and to reduce the risk of water ingress)-
ColoradoFourWheeler
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Re: Sound proofing Outboard
That's just the downside of 2-strokes. I don't mind it so much personally and I like the upsides of having 2-strokes (except fuel efficiency of course) like the weight, power and I might be old fashioned but there's something I love about that old outboard motor smell you get from 2-strokes. I"ve never tried to deaden mine for the same reasons @PeterM mentions, I don't want to heat her up (and I'm not special forces... or am I....?).
2001 Maxxon 4.2m (14') CS420FL SIB • 1969 Evinrude Sportster 25HP 25903B Outboard • Folding Trailer With Ball Hitch
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James
- Mega Poster, I Really Need To Get Out More !
- Posts: 1115
- Joined: 01 Aug 2015, 12:25
- Boat Make: F-Rib 360
- Outboard: 1999 Johnson 2-Stroke 15 HP
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Re: Sound proofing Outboard
The sound doesn't annoy me.
It would just be nice to have a conversation with another boat while idle lol.
The heat side of things did cross my mind.
I think I will just leave it as it is. I'm not after a 4-Stoke just yet as I love my Johnson
It would just be nice to have a conversation with another boat while idle lol.
The heat side of things did cross my mind.
I think I will just leave it as it is. I'm not after a 4-Stoke just yet as I love my Johnson
James
2015 F-Rib 360 married to a 1999 fully rebuilt 15hp 2 Stroke Johnson engine and 22 litre fuel tank.
Mods: Launch wheels, Towing Eyes, 2 Bench Seat Cushions, and 1 Bench Seat Bag
Boat name: Cichlid
2015 F-Rib 360 married to a 1999 fully rebuilt 15hp 2 Stroke Johnson engine and 22 litre fuel tank.
Mods: Launch wheels, Towing Eyes, 2 Bench Seat Cushions, and 1 Bench Seat Bag
Boat name: Cichlid
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ChrisParish
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Re: Sound proofing Outboard
- These users thanked the author ChrisParish for the post (total 2):
- James (27 Jun 2019, 23:43) • ColoradoFourWheeler (28 Jun 2019, 13:21)
Not a complete idiot - some parts are missing.
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9-R
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Re: Sound proofing Outboard
Definitely quieter than a 2s but even our 4s 20hp had an annoying pitch that was loud at WOT. My wife hated it and we'd have to yell/talk loud to communicate. I tried doing some sound deadening material in strategic places that helped a little. I didn't pursue it any further.
Wrote a note said, 'back in a minute'. Bought a boat and I sailed off in it.
