Water leak in the exhaust system
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=43183
Printed Date: January-15-2025 at 9:51pm
Topic: Water leak in the exhaust system
Posted By: Mpost
Subject: Water leak in the exhaust system
Date Posted: July-17-2018 at 8:13pm
|
My new to me 98 SN has what I believe to be fiberglass going from the exhaust manifold down to the bilge and into the muffler? I noticed a funny pattern on these pipes when I looked at the boat but assumed it was something to do with the covering used Today after skiing I opened the engine cover and the thought struck me that the pattern looked different between the two sides and looks like water stains. Sure enough I fired up the engine and there are little droplets of water forming on the outside of the pipes and eventually running down into the bilge. So my big question. Is this normal? Or does this happen after a period of time and they should be replaced????? Or some inventive additional cooling system developed for my boat ?????  https://imgbb.com/" rel="nofollow">  https://imgbb.com/" rel="nofollow">  https://imgbb.com/" rel="nofollow">  ------------- 84 SN Sold 98 SN Lund Pro V 1975 Alumacraft |
Replies:
Posted By: desertskier
Date Posted: July-17-2018 at 8:51pm
|
When I bought my '89 the invertaflow muffler was doing the same thing. I suspect that it had been overheated at some time which degraded the muffler. I took it off and re-glassed it the best I could. It still "sweated" a little but was much better than when I bought it. I eventually did a muffler delete so it's not a problem anymore. You may want to consider buying new ones if they are still available. edit: Here is a picture of mine. It was covered in pin size holes. 
|
Posted By: bb12
Date Posted: July-17-2018 at 9:04pm
|
My ‘89s invertalow had a slight crack/leak as well on the starboard side. I was able to repair mine. I bet you can fix yours if you re-glass it. ------------- 1989 Ski Nautique 2001 |
Posted By: KENO
Date Posted: July-17-2018 at 9:26pm
|
Here's a link to a fairly recent thread about those tubes on a 98 SN and some peoples fixes http://www.correctcraftfan.com/forum/forum_posts.asp?TID=42768&title=exhaust-tube-replace" rel="nofollow - link And...........if you decide you want new ones, here's a link to them at Nautique Parts https://www.nautiqueparts.com/product/muffler-exhaust-tubes-1998-nautiques/" rel="nofollow - link |
Posted By: Mpost
Date Posted: October-12-2021 at 6:53pm
|
I see I never updated this post with my resolution. The follwoing spring I took out the fiberglass down pipes to repair them for the seepage. They were toast. Mushy on the ends and lots of fiberglass matting and strands hanging inside of them. I suspect the a PO maybe overheated it at one time. Replaced all the hoses too. The hosees came off fairly easy with some heat from a hair drier and little prying. I removed the doghouse and flooring to make things more accessible. I dont have a picture of the tubes but still have them somewhere and could ge ta pic if need be.
Here are the new one installed.  ------------- 84 SN Sold 98 SN Lund Pro V 1975 Alumacraft |