Convert 2" Exhaust hose to 2 3/8" - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > General Interest Forums > Gear & Maintenance > Engines > Diesel
 Not a Member? 

Diesel This is a new forum dedicated to diesel engines and their applicable accessories.


Reply
 
LinkBack Thread Tools
  #1  
Old 08-18-2012
n8kraft's Avatar
Commodore
 
Join Date: Dec 2009
Location: Pier 32 Marina
Posts: 160
Thanks: 3
Thanked 1 Time in 1 Post
Rep Power: 5
n8kraft is on a distinguished road
Convert 2" Exhaust hose to 2 3/8"

Howdy,

I'm trying to convert my existing engine exhaust hose system from 2" output from the enigine to the 2 3/8" input to the right sized Vetus waterlift muffler. The waterlift is 60mm, darn near 2 3/8". Anyone know of the best right way to do this? I am trying to find a hose connection that goes from 2" to 2 3/8 inch, but can't find one on defender, or from my local West Marine.

The 2"hose fits pretty snug in the 2 3/8 inch and I have a sturdy 2" outside diameter fiberglass coupler from a previous installation that I can use to stiffen the inside of the 2" hose and then tighten the 2 3/8" hose down on. I want to make sure the system doesn't leak because it's going to and from a water lift muffler.

If anyone is interested in the project, I'm blogging about it here: Waterlift Muffler Replacement: Day 1 | Aboard Astraea

Any ideas or part sources, please let me know!

Thanks,

N8
__________________
Invest in experiences, not things.
Sailing with Nate, Natalie and Sullivan at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Reply With Quote Share with Facebook
  #2  
Old 08-19-2012
SimonV's Avatar
Wish I never found SN!
 
Join Date: Jul 2006
Location: Brisbane Australia
Posts: 1,990
Thanks: 3
Thanked 4 Times in 4 Posts
Rep Power: 8
SimonV will become famous soon enough
Re: Convert 2" Exhaust hose to 2 3/8"

I dont think that changing to a larger size exhaust hose is a good idea, an extra 3/8 dia is a large increase of water volume and a lot more for the exhaust gas to displace. Some here may no more about the physics but the engine was designed by an expert who selected 2" for a reason.
__________________
Simon
Ericson 39B.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

I love my boat
S/V GOODONYA
Brisbane
present location Heading to the Whitesundays

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

DELIVERY SKIPPER
Drinking Rum before 10am makes you a Pirate NOT an alcohlic
Reply With Quote Share with Facebook
  #3  
Old 08-19-2012
JimsCAL's Avatar
Senior Member
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 2,163
Thanks: 0
Thanked 13 Times in 12 Posts
Rep Power: 7
JimsCAL is on a distinguished road
Re: Convert 2" Exhaust hose to 2 3/8"

Your solution of fitting one hose on the other is not bad. Another possibility is to use a standard pipe reducer and nipples. 2 inch pipe is actually 2.375" OD and 1 1/2 inch pipe is actually 1.9" OD. Finding them in materials you like might be an issue.
Reply With Quote Share with Facebook
  #4  
Old 08-19-2012
jrd22's Avatar
Courtney the Dancer
 
Join Date: Nov 2000
Location: San Juan Islands., WA, USA
Posts: 3,787
Thanks: 3
Thanked 14 Times in 14 Posts
Rep Power: 14
jrd22 will become famous soon enough
Re: Convert 2" Exhaust hose to 2 3/8"

I've seen fiberglass adapters made for marine exhaust systems that are used to connect two different diameter hoses. You might do a search online, or check Fisheries Supply in Seattle (I think that is where I saw them).

Here you go, found them. Scroll down to "reducer couplings".
http://www.centekindustries.com/fittings.html
__________________
John
SV Laurie Anne

1988 Brewer 40 Pilothouse


Last edited by jrd22; 08-20-2012 at 12:11 AM.
Reply With Quote Share with Facebook
  #5  
Old 08-19-2012
Member
 
Join Date: Feb 2012
Posts: 36
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
Sic Semper Tyrannis is on a distinguished road
You buy the bronze shaft. Ship it to me and and pay to ship it back. Shoot me dimensions you want and I'll turn you some on my lathe.

That size bronze shaft might be found at a yard as a bent prop shaft.

Going to be an expensive piece of metal and much of it will end up as shavings.


Sent from my Kindle Fire
Reply With Quote Share with Facebook
  #6  
Old 08-20-2012
Lake Superior Sailor's Avatar
Senior Member
 
Join Date: Aug 2011
Location: Eagle River Wi.
Posts: 906
Thanks: 0
Thanked 3 Times in 3 Posts
Rep Power: 3
Lake Superior Sailor is on a distinguished road
Re: Convert 2" Exhaust hose to 2 3/8"

On my Cal 28; I used copper sweat plumbing pipe of what ever size I needed and sized up with adapter to go in Plastic muffler . Used hose, double clamped, Works fine! All out of plumbing supply house.....Dale
__________________
Reluctant Lady
Cal 28, 1967
Lake Superior
Where God got it done!
Reply With Quote Share with Facebook
  #7  
Old 08-23-2012
Senior Member
 
Join Date: Oct 2010
Location: HI
Posts: 2,665
Thanks: 2
Thanked 10 Times in 10 Posts
Rep Power: 4
casey1999 is on a distinguished road
Re: Convert 2" Exhaust hose to 2 3/8"

When I bought my boat, the exhaust outlet from water lift was made of a smaller diameter hose slid into a larger diameter hose with two hose clamps (the od of one hose was the id of the other). Did not leak water or exhaust but I never liked the connection. I found some bronze fittings at west marine and made a hose to hose connection and fitted that. That has worked well. My water lift is two inch outlet and the od of the connected hose was the ID of the 2 inch hose, west marine had these fittings in bronze.

Last edited by casey1999; 08-23-2012 at 01:48 PM.
Reply With Quote Share with Facebook
  #8  
Old 08-23-2012
Senior Member
 
Join Date: Oct 2010
Location: HI
Posts: 2,665
Thanks: 2
Thanked 10 Times in 10 Posts
Rep Power: 4
casey1999 is on a distinguished road
Re: Convert 2" Exhaust hose to 2 3/8"

I would think a 2-1/2 inch fitting would work. buy a 2" pipe to hose fitting and a 2-1/2 inch pipe to hose fitting (bronze) and connect with a 2-1/2 x 2" pipe reducer.


Reducer available here (COUPLING REDUCING BRONZE 2 1/2" X 2" 124510
Item #: MTL-44-462)

As well as the tailpieces (hose nipples):
TAIL PIECE STRAIGHT BRZ 2" 116421
Item #: GRO-TP-2000
List Price: $60.00 / Each
Your Price: $48.99 / Each


--------------------------------------------------------------------------------

TAIL PIECE STRAIGHT 2.50" BRONZE 116422
Item #: GRO-TP-2500


:

http://store.hamiltonmarine.com/brow.../2,808,51.html

http://store.hamiltonmarine.com/brow.../2,808,51.html

Regards

Last edited by casey1999; 08-23-2012 at 06:26 PM.
Reply With Quote Share with Facebook
Reply

Tags
2 3/8" inch , 2" inch , coupler , water lift muffler


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
"Seacock" vs. "ballcock" or "ball valve?" SEMIJim Gear & Maintenance 18 09-02-2013 05:31 PM
VIDEO: Coast Guard Academy Welcomes "Blue Goose" and "Stormy Petrel" - Patch.com NewsReader News Feeds 0 07-28-2012 07:50 AM
Bushing 1.5" transom through for exhaust 2" floatsome Gear & Maintenance 1 01-20-2009 07:57 PM
C270 Main Sail "stack Pack", Quick Cover", "lazy Bag" Install randy22556 Catalina 1 02-28-2007 11:53 AM


All times are GMT -4. The time now is 02:42 PM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012