Exhaust hose:1 new owner :0

VisionPNW

VisionPNW

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Dec 4, 2017
79
Hunter 466 Seattle
After four hours of me and my buddy wrestling the exhaust hose on to the mixing elbow, I can see why the previous install only got it on enough for 1 clamp. I am working with a 3 cylinder Yanmar, on a hunter Vision 32. I tried heating it up, tried twisting it, tried dish soap, I tried sweet talking it a little... Nothing! I've got it maybe 3/4ths of an inch on it. The old one came off without much of a problem, but aside from removing the mixing elbow from the motor (which I am hoping to avoid) I can't figure out how to get it on . Any ideas would be greatly appreciated.
 
K

kmacdonald

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Aug 5, 2016
25
Catalina Capri 22 Cambridge
You must have the wrong size hose. I would remove the mixing elbow to check for clogging and corrosion.
 
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K

kmacdonald

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Aug 5, 2016
25
Catalina Capri 22 Cambridge
If the hose is old, it won't be as flexible as new and that might be causing the problem.
 
Whatfiero1

Whatfiero1

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Mar 29, 2017
576
Hunter 30t 9805 littlecreek
Two things come to mind. 1St an exhaust flair tool. Second and this what I used put a ratchet strap on hose and use a Jack to force on
 
TomY

TomY

Alden Forum Moderator
Jun 22, 2004
2,759
Alden 38' Challenger yawl Rockport Harbor
Are you sure you have the right diameter hose? There are many sizes varying down to 1/8" in many cases.
 
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VisionPNW

VisionPNW

.
Dec 4, 2017
79
Hunter 466 Seattle
I am replacing it with the same size of hose that was on there... 2" It just seems almost impossible to get up to the engine with the bends it has to make behind the bulkhead.

Whatfiero1 said:
exhaust flair tool.
Click to expand
I think this would work perfectly! I'm trying to picture how you would use a jack though.
 
VisionPNW

VisionPNW

.
Dec 4, 2017
79
Hunter 466 Seattle
Here is a shot of what it looked like before I pulled off the old hose. Why would someone even put the second clamp on there? I've gotten the new one almost this far on, but there has been a lot of grunting and swearing, and not much more progress. I'll give the flare tool a shot!
MVIMG_20180113_172828

MVIMG_20180113_172828

 
VisionPNW

VisionPNW

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Dec 4, 2017
79
Hunter 466 Seattle
Ron20324 said:
Can you cut an access door on that bulkhead?
Click to expand
There was more than one thought given to this, as well as dismantling the entire engine bay. If I had a saw handy, that may have happened last night!
 
TomY

TomY

Alden Forum Moderator
Jun 22, 2004
2,759
Alden 38' Challenger yawl Rockport Harbor
VisionPNW said:
I am replacing it with the same size of hose that was on there... 2" It just seems almost impossible to get up to the engine with the bends it has to make behind the bulkhead.
Click to expand
Then I would have tried the same size as well. But there is 2 1/8" dia. exhaust hose available(I saw it online). That would mean a mere 1/16 of an inch of space added inside the hose you can't get on fully. It might slide on snuggly allowing you to double clamp it.

Then again, is the fit good on the lower connection?

A tough problem because if that tight fit with only one clamp isn't fully secure, it may blow off.
 
Whatfiero1

Whatfiero1

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Mar 29, 2017
576
Hunter 30t 9805 littlecreek
The Jack would be an old bumper type jack where the tabb ya hook ratchet strap and pull hose up
 
K

kmacdonald

.
Aug 5, 2016
25
Catalina Capri 22 Cambridge
TomY said:
Then I would have tried the same size as well. But there is 2 1/8" dia. exhaust hose available(I saw it online). That would mean a mere 1/16 of an inch of space added inside the hose you can't get on fully. It might slide on snuggly allowing you to double clamp it.

Then again, is the fit good on the lower connection?

A tough problem because if that tight fit with only one clamp isn't fully secure, it may blow off.
Click to expand
Yep, Gates doesn't even list 2" hose. Only 2 1/8" for a lot of their exhaust hose.
 
K

kmacdonald

.
Aug 5, 2016
25
Catalina Capri 22 Cambridge
VisionPNW said:
Here is a shot of what it looked like before I pulled off the old hose. Why would someone even put the second clamp on there? I've gotten the new one almost this far on, but there has been a lot of grunting and swearing, and not much more progress. I'll give the flare tool a shot!
MVIMG_20180113_172828

MVIMG_20180113_172828

Click to expand
The exhaust elbow looks a little corroded on the outside, could be a lot worse on the inside. I would lake it off and check it. You do know if it fails it can ruin the engine? Salt water will run into the engine exhaust valves causing catastrophic damage.
 
VisionPNW

VisionPNW

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Dec 4, 2017
79
Hunter 466 Seattle
kmacdonald said:
Yep, Gates doesn't even list 2" hose. Only 2 1/8" for a lot of their exhaust hose.
Click to expand
It does fit perfectly onto the fiberglass muffler on the other end...

kmacdonald said:
The exhaust elbow looks a little corroded on the outside, could be a lot worse on the inside. I would lake it off and check it. You do know if it fails it can ruin the engine? Salt water will run into the engine exhaust valves causing catastrophic damage.
Click to expand
Yes, I am aware of the dangers lurking in the mixing elbows soon to fail in all boats. The corrosion is pretty consistent with other areas, and there are no overheating issues so, I'd like to continue using this one until it's useful life has been used. The previous owner said it has somewhere around 100 hrs on it. If I replaced everything that was corroded, I'd have new engine and pretty much a new boat!
 
bawlmer

bawlmer

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Sep 15, 2013
707
Catalina 270 Baltimore
I know you don't want to hear this but I waited for my exhaust elbow to reach the end of its useful life. A 1/4 inch hole opened in it due to internal corrosion and it made an unholy mess in my engine compartment. You have no idea how much soot can pass through such a small hole in 2 hours time. There was no visible outside corrosion. My sincere recommendation is to take advantage of that fact that you are already in there and replace the hose and the elbow. I replaced mine and it was not that miserable of a job. I cut the old hose off with a sharp knife and the new one went on relatively easy with a lot of Dawn dish liquid. I understand about "new engine and new boat" but I think this one warrants attention. Just my .02.
 
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NYSail

NYSail

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Jan 6, 2006
3,060
Beneteau 423 Mt. Sinai, NY
If you have tight bends leading to the elbow why not get a fiberglass fitting so the hose will not have bends.... I used these on my last engine due to similar situation and it worked out perfect and made putting hose on a breeze. Also used a bit of Teflon grease.....
 
HMT2

HMT2

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Mar 20, 2014
899
Hunter 31 828 Shoreacres, TX
bawlmer said:
There was no visible outside corrosion. My sincere recommendation is to take advantage of that fact that you are already in there and replace the hose and the elbow.
Click to expand
+1 on this
 
VisionPNW

VisionPNW

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Dec 4, 2017
79
Hunter 466 Seattle
NYSail said:
If you have tight bends leading to the elbow why not get a fiberglass fitting so the hose will not have bends.... I used these on my last engine due to similar situation and it worked out perfect and made putting hose on a breeze. Also used a bit of Teflon grease.....
Click to expand
Where did you find this fiberglass fitting?
I will be absolutely buying one along with a new elbow as well.

I was able to get the hose on after using a pipe expander and some creative winching.
 
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VisionPNW

VisionPNW

.
Dec 4, 2017
79
Hunter 466 Seattle
I was thinking I could maybe get one more season out of this one... what do you guys think?
IMG_20180114_145620

IMG_20180114_145620

Old exhaust hose
It was quite the job getting the new one in, but no more leaking and one more thing crossed off my survey to-do list!
 
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