How to quiet a '97 Johnson 225

2450WA

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Aug 3, 2003
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Anyone tried soundproofing the inside of the motor cover? Does it work? Are there any other options to quiet these motors down a little bit?
 

Dhadley

Supreme Mariner
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Feb 4, 2001
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16,978
Re: How to quiet a '97 Johnson 225

Adding soundproofing to the inside of the hood will tend to hold heat in. Not good. Those motors shouldnt be that loud anyway. What kind of boat? what kind of prop? What is so noisy? Exhaust? Intake? Stock hood?<br /><br />Let us know!
 

2450WA

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Aug 3, 2003
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Re: How to quiet a '97 Johnson 225

'97 Hydra-Sports 2450WA, stock aluminum prop, engine runs perfect, less than 100 hours on it. I guess I am just not used to the loudness of these 2 strokers and want to try to cut the noise level down some.
 

miloman

Lieutenant Junior Grade
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Nov 3, 2002
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1,181
Re: How to quiet a '97 Johnson 225

you should never ever add insulation under the cowling it will make your engine run hotter and put you at risk for expensive repairs
 

2450WA

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Aug 3, 2003
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Re: How to quiet a '97 Johnson 225

OK, so soundproofing inside the cover is a no no. Are there any other options or is this one of those "just live with it" things?
 

willxuout

Petty Officer 2nd Class
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Mar 18, 2003
Messages
113
Re: How to quiet a '97 Johnson 225

What are you comparing the noise level to? I've had I/O's, 4-cycle, and 2-cycle. 2-cycles are definately louder. I have a 96 Evinrude 225 Ocean pro and when I'm on a plane you will have to yell at the guy standing right nect to you at the console. That's just normal.
 

Dhadley

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Feb 4, 2001
Messages
16,978
Re: How to quiet a '97 Johnson 225

Again, what is so loud? The exhaust? The intake? Is the hood a stock one? Any louvers in it? Is the foam still inside?
 

2450WA

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Aug 3, 2003
Messages
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Re: How to quiet a '97 Johnson 225

I am used to inboards or I/O's, so the sound of the outboard is significantly louder. I have to presume most of the racket is the exhaust. The cover is stock and has louvers on the top and foam on the inside. When you are up on plane you do have to yell to the guy standing next to you it is so loud. I just want to know if there are any aftermarket items that can help cut down on the noise. There is a website that sells soundproofing for outboard motors. It is applied on the inside of the motor cover. http://users.primushost.com/~dobquiet/outboard.htm
 
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