Reply
 
Thread Tools Display Modes
 
Old 09-27-2016, 09:55 PM   #1
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 12,679
Exhaust hose removal

I need to remove an 18" (approx) exhaust hose that spans the distance between the top of the riser off the engine manifold and the lift muffler. It's a very stiff hose 2 1/2" ID and about a year ago I was going to replace it but couldn't make it move on either end. Aborted the replacement.

Now I want to remove it to insert a flex pipe section. It looks like the installation was made using some kind of white goop. I think my only option is through mechanical means and whatever the goop was/is has been baked on there for almost 10 years. Any ideas?
__________________
Advertisement

__________________
Eric

North Western Washington State USA
Nomad Willy is online now   Reply With Quote
Old 09-27-2016, 10:13 PM   #2
Guru
 
HopCar's Avatar


 
City: Miami Florida
Vessel Name: Possum
Vessel Model: Ellis 28
Join Date: Aug 2011
Posts: 3,100
Eric since you're going to replace it, just cut it. I use a Dremel tool to slit the hose length wise, then start prying with a screw driver. You might have to heat it to break the goop free, I'm thinking heat gun.
__________________

__________________
Parks Masterson
www.hopkins-carter.com
HopCar is online now   Reply With Quote
Old 09-27-2016, 10:14 PM   #3
Guru
 
DHeckrotte's Avatar
 
City: Philadelphia, PA
Country: USA
Vessel Name: Revel
Vessel Model: 1984 Fu Hwa 39
Join Date: Nov 2015
Posts: 539
Saw it out. Then go after the bits remaining adhered to the barbs; you should be able to abuse it into submission. Failing that, cut the bit remaining longitudinally using your Dremel; don't damage the barbs.
DHeckrotte is online now   Reply With Quote
Old 09-27-2016, 10:50 PM   #4
Veteran Member
 
City: Langley BC
Country: Canada
Vessel Name: Shalady
Vessel Model: 1981 Cheerman 38 Europa
Join Date: Oct 2013
Posts: 61
If the hose has a wire spiral it can be cut with a good pair of side cutters. i cut my hose with a few passes of a good sharp lino knife I bought at Home Depot
stanfromhell is offline   Reply With Quote
Old 09-28-2016, 06:07 AM   #5
Senior Member
 
bnoft's Avatar
 
City: Lottsburg, Va
Country: USA
Vessel Name: Amazing Grace
Vessel Model: Grand Banks 42
Join Date: Dec 2007
Posts: 166
I used a Dremel tool to cut thru the wire reinforcement.
bnoft is offline   Reply With Quote
Old 09-28-2016, 10:00 AM   #6
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 12,679
Thank you much guys,

Oh yes I'm going to cut it.
The problem is that the hose ID is really stuck to the 2 1/2" pipe, SS at the riser and FG at the lift pump. Actually at the lift pump it's a 90 degree FG L. And HopCar I initially thought of heat but it is rubber. That will make lots of smoke but that's prolly what I'll have to do. If the L comes loose first at the lift muff I'll just get another L.

The very rigid hose has sent the vibration directly to the lift muffler and it's loose on it's base. Need to fix that too.

Another thought is to cut the hose w a hack saw at the riser and after I remove the start batt (easy) I could just remove the lift muff w the hose, L and all. Deal w it out of the engine compartment.

No ideas as to what the white goop is? It was installed in a yard but the guys the did the repower. Professionally done that is. Hope it's not 5200.

Dheckroot,
Where do you think there will be barbs? I like your "abuse it into submission" suggestion. Get physical w it .... Got it. Already done that but will need to up the anti and/or apply heat. Worst case scenario is buying a new L and lift muff. When I get it appart it may come to that anyway. Less than 1000hrs on it so it's hard to imagine the muff needs replacement.
__________________
Eric

North Western Washington State USA
Nomad Willy is online now   Reply With Quote
Old 09-28-2016, 10:04 AM   #7
Guru
 
City: Seaford Va on Poquoson River, VA
Country: United States
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 1,004
I use white teflon pipe dope on the rubber hoses so they do not get stuck and never seen it harden. Get it from HDepot.
RectorSeal T Plus 2 4 oz. Teflon Pipe-Thread Sealant-23631 - The Home Depot
sdowney717 is offline   Reply With Quote
Old 09-28-2016, 10:08 AM   #8
Guru
 
City: gulf coast
Country: pinellas
Join Date: Jun 2014
Posts: 1,952
it probably is 5200 and it seems to have worked well. A wire wheel on the end of a drill will remove much of the goop after you cut off the hose. A little research should tell you if 5200 sticks to cured 5200. If so I would use it again without perfect cleaning of the joints.
bayview is offline   Reply With Quote
Old 09-28-2016, 10:16 AM   #9
Guru
 
City: Seaford Va on Poquoson River, VA
Country: United States
Vessel Name: Old Glory
Vessel Model: 1970 Egg Harbor 37 extended salon model
Join Date: Jan 2016
Posts: 1,004
Quote:
Originally Posted by bayview View Post
it probably is 5200 and it seems to have worked well. A wire wheel on the end of a drill will remove much of the goop after you cut off the hose. A little research should tell you if 5200 sticks to cured 5200. If so I would use it again without perfect cleaning of the joints.
5200 does stick well to cured 5200.
But using 5200 makes it very hard to take anything apart again.
For exhaust hose all you need is a hose clamp and one for a backup.
sdowney717 is offline   Reply With Quote
Old 09-28-2016, 10:45 AM   #10
Guru
 
DHeckrotte's Avatar
 
City: Philadelphia, PA
Country: USA
Vessel Name: Revel
Vessel Model: 1984 Fu Hwa 39
Join Date: Nov 2015
Posts: 539
Eric, I used barbs as a quick lazy way to write about the fittings. They really don't have barbs, like a fishhook or a fence, but they have variously aggressive annular corrugations or even teeth to help retain the hose on the fitting.
DHeckrotte is online now   Reply With Quote
Old 09-28-2016, 11:01 AM   #11
Guru
 
Bacchus's Avatar
 
City: Seneca Lake NY
Country: US
Vessel Name: Bacchus
Vessel Model: MS 34 HT Trawler
Join Date: Nov 2014
Posts: 1,175
Quote:
Originally Posted by Nomad Willy View Post
Thank you much guys,

No ideas as to what the white goop is? It was installed in a yard but the guys the did the repower. Professionally done that is.
Hope it's not 5200.
If it is 5200 some heat will help break that loose... a heat gun should be a little easier to control vs torch
__________________
Don
MS 34 HT Trawler
"Bacchus"
Bacchus is offline   Reply With Quote
Old 09-28-2016, 06:10 PM   #12
Guru
 
Nomad Willy's Avatar
 
City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 12,679
Thanks all,
I have a good heat gun but it would seem I'd need to heat the entire joint all the way around before it will move. Perhaps the reason I failed to break it loose last time is that both ends are attached and the hose is so stiff end A kept end B from rotating. So I'll cut the riser end and work on the muffler end w/o the riser end attached .. preventing radial movement. Or as I said before I'll take the whole muff and pipe out.

I'll clean it up best I can and put the new hose on .. w the clamps. Gotta get it appart so I can tell National Marine Exhaust how long to make the flex unit. Don't know how much pipe is inside the hose. Need to do the VHF antenna first though.

Thanks again all. Will report in several days.
__________________

__________________
Eric

North Western Washington State USA
Nomad Willy is online now   Reply With Quote
Reply

Thread Tools
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





All times are GMT -5. The time now is 09:51 PM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012