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deltana_guy
22:59:10 Thu
Jul 30 2009

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Ways to make a dredge quite.

Hi everyone,

I have a dredge with 6.5hp honda engine that I would like to weld a muffler onto to make it quite. The constant rattle and noise from the stock exhaust is to much towards the end of the day. I've seen some Youtube videos where the dredges were really quite and the owners were talking normally while the dredge operated. Would you guys recommend a muffler and if so what kind would be best or what about an idea welding an exhaust pipe to the stock muffler and putting it in the water? What are your thoughts?

  
LipCa
23:40:41 Thu
Jul 30 2009

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Re: Ways to make a dredge quite.


  
deltana_guy
02:05:10 Fri
Jul 31 2009

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Re: Ways to make a dredge quite.

I looked at the link, and found the muffler they are talking about. One person says its 50% quiter after its "worn in". I've seen those similar mufflers on dirt bikes and four-wheelers here in Alaska, they seem to be effective to reduce noise and heat, but the company only advretises 33% noise reduction.

Thats much better that I have one now. I'm thinking off getting one, but I'm still thinking of other options which might be quiter. Is having an exhaust pipe in the water quiter or is their a proportion of what type of engine; i.e. HP size, you have to what type of muffler you use?

  
LipCa
04:21:23 Fri
Jul 31 2009

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Re: Ways to make a dredge quite.

as someone mentioned a few days ago, you may have to worry about the back pressure. I don't know...how do they exhaust the engine on an inboard engine boat?

  
eklawok
07:26:19 Fri
Jul 31 2009

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Re: Ways to make a dredge quite.

On an inboard boat it depends on if it is a dry or wet exhaust system. For this I think you are talking about a wet system. On my boat (with a 4.3 chevy V-6) the back pressure (and noise) is controlled by the exhaust "tips" that run through the transom of the boat and are not submerged while on step. And they have flappers that keep the water from running up the exhaust system when not or coming off step. (Don't know if this helps, but it is how it is done)

Have you tried plain ol ear plugs? I have never used a dredge before, but I would think that ear plugs would work and be cheaper. Get the all plastics ones and not the foam ones. They will absorb water. And if you are under water dredging, how about those wax plugs that swimmers use. I can't see any wrong in that either. (I am sure somebody will correct me on that now)

  
goldcoastprospector
13:44:56 Fri
Jul 31 2009

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Re: Ways to make a dredge quite.

Found this on another site, jackssmallengines.com . Mark

  
RUSTY_HAPPY_CAM
02:45:58 Sat
Aug 1 2009

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Re: Ways to make a dredge quite.

Quieter street motorcycle mufflers for bikes of somewhere the same size are cheep at wrecking yards and very quite.

  
vortxrex
22:40:34 Sun
Aug 2 2009

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Re: Ways to make a dredge quite.

If you really want quiet, install the muffler from a Generator. you can match them by engine size.

Dave Frank

  

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