Reply
 
Thread Tools Search this Thread Display Modes
 
Old 11-08-2020, 08:12 AM   #1
Member
 
City: Hartville OH
Join Date: Oct 2018
Posts: 7
11' six inch exhaust hose replace

So we have a new to us 2005 Mainship 400 with a Cummins 5.9 and are working through our list of needed repairs. The 1st one is to replace the 11' long, 6" exhaust hose from the engine to the muffler. The existing 1 has cracked where the hose does a 30 degree turn, And our surveyor recommended that we replace it. We have the new and expensive hose in hand, and can remove the old hose With a bit of muscle and hacksaw work. But we are struggling with how we can install the new hose. Not having any experience with this, This seems like a difficult task to push the hose on to one of the nipples, bend the hose, and then try to get the other end onto the Engine nipple. The hose is 6" hard wall and not Very flexible. We are hesitant to pull off the old hose until we can figure out how to install the new. Pictures attached. Any assistance is appreciated. The 1st photo shows the crack at the turn.Click image for larger version

Name:	20201107_154444.jpeg
Views:	15
Size:	67.6 KB
ID:	109791Click image for larger version

Name:	20201107_154437.jpeg
Views:	14
Size:	69.9 KB
ID:	109792Click image for larger version

Name:	20201107_154501.jpeg
Views:	14
Size:	71.4 KB
ID:	109793
__________________
Advertisement

Timmyvan is offline   Reply With Quote
Old 11-08-2020, 09:11 AM   #2
Guru
 
Pete Meisinger's Avatar
 
City: Oconto, WI
Vessel Name: Best Alternative
Vessel Model: 36 Albin Aft Cabin
Join Date: Oct 2012
Posts: 2,087
Welcome Aboard..

Two suggestions:
1) Plug one end and fill it with boiling water. It will probably work for the high end fitting and the bend, might not help with the low end.

2) Heat gun

Good Luck,

pete
__________________

Pete Meisinger is offline   Reply With Quote
Old 11-08-2020, 09:14 AM   #3
Enigma
 
RT Firefly's Avatar
 
City: Slicker?
Join Date: Oct 2007
Posts: 15,575
Greetings,
Mt. T. Hoo boy! I've worked with that type of hose before. Not terribly easy to handle. Just a thought...Might you be able to cut out that bad "bend" and install a 30 degree elbow in it's place? MAY be easier than dealing with an 11' long piece.
__________________
RTF
RT Firefly is offline   Reply With Quote
Old 11-08-2020, 09:20 AM   #4
Guru
 
City: Carefree, Arizona
Vessel Name: sunchaser V
Vessel Model: DeFever 48
Join Date: Apr 2008
Posts: 9,255
Pete
My thoughts and experience on dealing with this issue:

-- two big strong guys,
-- liquid soap,
-- pry bars,
-- come along with gripping straps
-- and strong language.

You have double checked exact hose ID for old and new? Some Chinese hose is made metric and marked "close" English units.
sunchaser is offline   Reply With Quote
Old 11-08-2020, 09:44 AM   #5
Guru
 
rgano's Avatar
 
City: Southport, FL near Panama City
Vessel Name: FROLIC
Vessel Model: Mainship 30 Pilot II since 2015. GB-42 1986-2015. Former Unlimited Tonnage Master
Join Date: Oct 2007
Posts: 3,321
There are fiberglass joints available in various angles. I used a couple when I rebuilt the exhaust systems in my trawler years back and even as recently as a couple of years ago for the difficult to handle 1-inch exhaust of the tiny generator I have now. Figure the angle your need at the bend, cut the hose, and double clamp the connections. This will reduce the potential for cracking of the hose in the future. BTW small external cracking in exhaust hose is not all that uncommon and harmful, but since you are already into it.....
__________________
Rich Gano
FROLIC (2005 MainShip 30 Pilot II)
Panama City area
rgano is offline   Reply With Quote
Old 11-08-2020, 09:56 AM   #6
Guru
 
psneeld's Avatar
 
City: Ft Pierce
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 23,701
Check Venus exhaust hose, much more flexible than most...mine bent 90 degrees in just a foot or so. I had about a 12 foot run.

Fawcett Boat Supplies
psneeld is offline   Reply With Quote
Old 11-08-2020, 10:50 AM   #7
Arc
Senior Member
 
City: Long island
Vessel Model: Eastern
Join Date: Aug 2018
Posts: 416
The bend will not be your problem it’s the nipples. I took a 4 pieces of plywood. Made circles to fit inside . Screwed them together then cut in half. I heated the hose ends and drove a wedge between the 2 half moon pieces of plywood.
Arc is offline   Reply With Quote
Old 11-08-2020, 11:01 AM   #8
Guru
 
City: Galveston, Texas
Vessel Model: 24" El Pescador
Join Date: Nov 2014
Posts: 680
Sometimes it is better to pay someone who has done it a lot of times---take the easy way out. ;-)
__________________
Ken Diestler
Galveston, Tx
ktdtx is online now   Reply With Quote
Old 11-08-2020, 11:03 AM   #9
Arc
Senior Member
 
City: Long island
Vessel Model: Eastern
Join Date: Aug 2018
Posts: 416
Quote:
Originally Posted by ktdtx View Post
Sometimes it is better to pay someone who has done it a lot of times---take the easy way out. ;-)
And take the misery out of boat ownership? This is boating and there will be pain.
Arc is offline   Reply With Quote
Old 11-08-2020, 11:06 AM   #10
Guru
 
psneeld's Avatar
 
City: Ft Pierce
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 23,701
Use the right hose or plan fiberglass joints and bellows connectors well and the job doesn't have to be too hard.....well its always boat dependant.
psneeld is offline   Reply With Quote
Old 11-08-2020, 11:52 AM   #11
Guru
 
City: gulf coast
Join Date: Jun 2014
Posts: 3,441
Quote:
Originally Posted by ktdtx View Post
Sometimes it is better to pay someone who has done it a lot of times---take the easy way out. ;-)
+1
bayview is offline   Reply With Quote
Old 11-08-2020, 12:55 PM   #12
TF Site Team
 
Comodave's Avatar
 
City: Au Gres, MI
Vessel Name: Never Say Never
Vessel Model: President 41 DC
Join Date: Jul 2015
Posts: 11,852
Also check the clamps. I replaced mine with T bolt AWAB clamps. No welds to rust and all 316 S/S.
Attached Thumbnails
22C4B80D-2471-4246-9861-02B05F81F465.jpg   57FF0DD5-668D-4B74-8AB3-5B3E567F65D6.jpg   066FC602-8218-4778-B42E-372F1AF4A5A0.jpg  
__________________

__________________
Boat Nut:
If you are one there is no explanation necessary.
If you aren’t one, there is no explanation possible.
Comodave is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Trawler Port Captains
Port Captains are TF volunteers who can serve as local guides or assist with local arrangements and information. Search below to locate Port Captains near your destination. To learn more about this program read here: TF Port Captain Program





All times are GMT -5. The time now is 07:54 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012
×