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Old 29-03-2024, 06:37   #1
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Join Date: Jun 2018
Location: Clearwater FL
Boat: 1982 Beneteau First 42'
Posts: 152
Has anyone replaced the muffler on a Beneteau First 42? Seems impossible!

I had some cooling woes and it appears I just keep working myself stern replacing items. It started when one of the bowman endcaps sprung a leak on my Perkins 4.108. After replacing it I noticed on startup that it started to swell up and I knew I had a restriction down stream. Since then I ended up:
  • Replacing the mixing elbow with a stainless one because the 40 year old cast iron one was completely clogged
  • Replacing the exhaust hose going to the muffler because the previous one was 2.5' to make up for the swelled up cast iron elbow
  • All new hose clamps after one broke after tightening it on the muffler

Unfortunately now I am dealing with a leak. I can't see the actual leak, I can just see the water coming into the bilge and I can hear it. I took a boroscope and best I can tell it's not coming from where the hose attaches to the front or rear of the muffler. To me that means while the boat was sitting for a couple months saltwater must have corroded the muffler and now it's leaking.

Accessing this muffler is terrifying to me. I have no idea how I am going to reach it and I am hoping one of you have prior experience before I take a chainsaw to the cockpit and just hack my way to where it is. Recommendations for a replacement muffler would be helpful as well. The boat is a 1984 Beneteau First 42.

Thank you.
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My late Dad's boat. So many great memories in the Keys/Bahama. Currently trying to figure out how we can continue the adventure without him. ISO of inexpensive wet storage and someone to teach the systems on the boat
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Old 17-04-2024, 11:18   #2
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Location: Clearwater FL
Boat: 1982 Beneteau First 42'
Posts: 152
Re: Has anyone replaced the muffler on a Beneteau First 42? Seems impossible!

Bumpp
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My late Dad's boat. So many great memories in the Keys/Bahama. Currently trying to figure out how we can continue the adventure without him. ISO of inexpensive wet storage and someone to teach the systems on the boat
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Old 17-04-2024, 13:17   #3
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Re: Has anyone replaced the muffler on a Beneteau First 42? Seems impossible!

Quote:
Originally Posted by Enyar View Post
Bumpp
Nothing’s impossible, some things are just harder to accomplish.
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Old 17-04-2024, 14:16   #4
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Join Date: Jan 2019
Boat: Beneteau 432, C&C Landfall 42, Roberts Offshore 38
Posts: 6,585
Re: Has anyone replaced the muffler on a Beneteau First 42? Seems impossible!

Easy...call a mechanic and quite stressing about it.

A good mechanic can do something in one hour that will take you all day.....zip...zappity do....done

Most area marina's have a boat mechanic nearby....
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