Reducing Noise

[RobMarks]

Afternoon everyone,

I would like to reduce the engine noise of my 40+

What would the best way of doing this (exhaust and carb)

Do you have any examples of this being done

Cheers Rob.

[phil]

Start with an SJP model with the brass exhaust tube,that should give you a noticeable noise reduction. Personally I'm more interested in getting rid of the vibration, which implies better balancing of rotating parts. Pre-1966 motors appear to be much more carefully machined and assembled as well.

[1650bullet]

Hi Rob. The only answer i can give you for your question is no. Cant do anything mate. I have known of poeple on this forum who blocked the holes in the top of the exhaust tube and wrap a bit of wire mesh around the carb inlet, But all that they both do is lose power and heaps of it. You also have big dramas restarting the motor to. Seagulls are a rude crude workhorse that keeps going and going for many many years. So they are not designed to be a quite eco freindly motor.

[Horsley-Anarak]

Mariner 3.3 or Evinrude 6 or Johnson 4 or Mercury 4, work for me, they are all much quieter. But if one breaks down or gets drowned I will be reaching for my slightly noisy Seagull

H-A

[Stelios_Rjk]

The storm cowl makes it run a little bit quieter and if you could drive water in the exhaust. There are some posts about that if you do a search in the forum.

[chris]

storm cowls I have been told restrict the carb, also if you want to make a seagull quieter use ear plugs

[1650bullet]

Yes i can vouch for that. Storm cowls restrict the airflow bigtime. What happens is the engine flatspots snorts and has the same effect as leaving the choke on.

[RobMarks]

Thank you for the input, I would just like to hear the person next to me

[chris]

I have found the 102's to be quieter, my motor 40+ is offset to the port side of the transom and I steer with the rudder and sit in the middle of the boat, I find by doing that I can have a conversation by sign language and yelling
I also have a waterproof phone so I can text the person next to me which works okay if they can hear their phone ring as they can't feel the vibrate alert because of the vibrations from the seagull

[Keith.P]

I have never found that you cannot have a conversation in a boat when running a seagull, even when you crew is hard of hearing.

http://www.youtube.com/watch?v=VI23xaoE_RY

[RobMarks]

Mine makes more of a racket than that

[david doyle]

once you hear the first ring of tintinutis (sp?) you will always hang a pair of ear muff on your OBs tiller no matter how quiet you think it is. Seriously it aint fun to hear the whine and ring,2 years ago I fired 100 rounds in a deer cull and then worked my way thru a crate of waterfowl loads with only spotty plug use. Big mistake, now even 5 mins with any motor noise and I have a sci-fi soundtrack in my head for days. Ear plugs are a bother and lead to ear infections unless you always use fresh ones and clean hands. Properly fitting them with gas/oil/fish guts etc on your hands is not pleasant. Ear muffs have gotten light, comfy and cheap. Aside from the ear health benefits a pair of muffs keeps your hat from blowing off into the water.

[charlesp]

I have often found that an inability to hear the crew is no disadvantage at all.

I just love the phrase about 'flatspots & snorts' it suggests wonderful title for a concept album...

[Collector Inspector]

once you hear the first ring of tintinutis (sp?) you will always hang a pair of ear muff on your OBs tiller no matter how quiet you think it is. Seriously it aint fun to hear the whine and ring,2 years ago I fired 100 rounds in a deer cull and then worked my way thru a crate of waterfowl loads with only spotty plug use. Big mistake, now even 5 mins with any motor noise and I have a sci-fi soundtrack in my head for days. Ear plugs are a bother and lead to ear infections unless you always use fresh ones and clean hands. Properly fitting them with gas/oil/fish guts etc on your hands is not pleasant. Ear muffs have gotten light, comfy and cheap. Aside from the ear health benefits a pair of muffs keeps your hat from blowing off into the water.

Tinnitus DD?

Seagulls and other Old Dears make mine less of a hassle. I have no loud noise damage to my ear system from my past to explain mine. I guess The B Brain just wants to hear this?

http://www.youtube.com/watch?v=shi0MahEfs8

B

[1650bullet]

once you hear the first ring of tintinutis (sp?) you will always hang a pair of ear muff on your OBs tiller no matter how quiet you think it is. Seriously it aint fun to hear the whine and ring,2 years ago I fired 100 rounds in a deer cull and then worked my way thru a crate of waterfowl loads with only spotty plug use. Big mistake, now even 5 mins with any motor noise and I have a sci-fi soundtrack in my head for days. Ear plugs are a bother and lead to ear infections unless you always use fresh ones and clean hands. Properly fitting them with gas/oil/fish guts etc on your hands is not pleasant. Ear muffs have gotten light, comfy and cheap. Aside from the ear health benefits a pair of muffs keeps your hat from blowing off into the water.

Tinnitus DD?

Seagulls and other Old Dears make mine less of a hassle. I have no loud noise damage to my ear system from my past to explain mine. I guess The B Brain just wants to hear this?

http://www.youtube.com/watch?v=shi0MahEfs8

B

Thanks for that. I think ive got it back now.