Check for cracks in the fiberglass under where the hose clamps are. I found one that must have been leaking intermittently!
The hose and clamps appeared to have been changed but I have no records of this when I bought the boat a year and a half ago. Apparently it is easy to crack the fiberglass tubes from over zealous tightening of the hose clamps as has been discussed on this forum before.
Jon
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Thread: exhaust hose
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Re: exhaust hose
Jonathan Brein
1982 43' DCFB #550
"Paragon"
Chesapeake, Virginia
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Re: exhaust hose
Ideally there should be a stainless steel sleeve inside the fiberglass tube where the hose is clamped. This is what we re doing in mine
Pascal
Miami, FL
1970 53 MY #325 Cummins 6CTAs
2014 26' gaff rigged sloop
2007 Sandbarhopper 13
12' Westphal Cat boat
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01-11-2018 07:28 PM #13
Re: exhaust hose
mr. johnny, centek makes the stainless sleeves and i do highly recommend them. i replaced my hoses and they did not have sleeves in the original setup. i couldn't get the leaks stopped because the fiberglass tubes were starting to crush. i installed the sleeves and have had no problem since. i used the trident silicone hose, more expensive but much easier to work with
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Re: exhaust hose
Big Bill,
Do you mean these:
http://www.centekindustries.com/prod...crush-sleeves/
According to the installation guide, they are inserted inside the fiberglass tube using 5200.
On my boat, the gap between the fiberglass tubes was only an 1" or so which leads me to believe that this was done in the factory 36 years ago. The rubber boot was in surprisingly good condition. I had to cut out a small section of fiberglass where the crack was and then I installed the new rubber boot. I tightened the hose clamps a little bit at a time...carefully! It hasn't leaked since.
I plan on replacing the 3 other joints that I found on my boat with silicone hose as well with these sleeves!
Thanks for the information Big Bill!
JonJonathan Brein
1982 43' DCFB #550
"Paragon"
Chesapeake, Virginia
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Re: exhaust hose
The taiwan built boat i used run didnt have the crush sleeves in the collectors just past the risers where the 12" silicon joint were clamped. All 4 (2 per engine) always leaked, had to repair the cracked glass on tow of them at some point.
Pascal
Miami, FL
1970 53 MY #325 Cummins 6CTAs
2014 26' gaff rigged sloop
2007 Sandbarhopper 13
12' Westphal Cat boat
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01-12-2018 09:42 AM #16Senior Member
- Join Date
- Jul 2005
- Posts
- 70
Re: exhaust hose
Thanks for the info on the sleeves.
I do plan to use silicone hose.
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Re: exhaust hose
Jonathan Brein
1982 43' DCFB #550
"Paragon"
Chesapeake, Virginia
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Re: exhaust hose
I didn't used the name till somebody mentioned it. . I called them inserts.
Pascal
Miami, FL
1970 53 MY #325 Cummins 6CTAs
2014 26' gaff rigged sloop
2007 Sandbarhopper 13
12' Westphal Cat boat
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01-12-2018 11:53 PM #19Senior Member
- Join Date
- Jun 2007
- Posts
- 4,974
Re: exhaust hose
On the 41c there is plenty of room to get outside of the fuel tanks and inspect the exhaust.....if one is flexible and under 200lbs lol.
On thing I will never understand on any boat is having the exhaust in the transom exist at or below the water line. Think of all the boats that wouldn't have sunk if the exhaust discharge was just a few inches higher.
These "mufflers" have a built in swing check valve, but they don't muffle as much as I'd like. Maybe one day I'll replace them. Any ideas?
FTFD... i drive a slow 1968 41c381
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