Exhaust Hose
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Engine Repair
Forum Discription: Engine problems and solutions
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=20776
Printed Date: May-02-2024 at 10:14am
Topic: Exhaust Hose
Posted By: Jones
Subject: Exhaust Hose
Date Posted: February-28-2011 at 8:04pm
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I'm planning to replace the 3.5" exhaust hose on my 1997 SN. The existing look to be original but I found they appear to have a fiberglass tube lining. I have been unable to find any reference to this type of exhaust hose and it's not available from either nautiqueparts.com or skidim. Does anyone know if this tube is intended to be removable or should I go with a standard softwall hose? ------------- 1979 Ski Nautique (sold) 1997 Ski Nautique 1998 Super Sport Nautique |
Replies:
Posted By: Jones
Date Posted: March-13-2011 at 11:46pm
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So... I decided to cut open the exhaust hose from the riser to the down-tube. It turns out the inner-tube is not fiberglass but "stainless steel". Is this stock? Necessary? Anyone? Bueller? Bueller? ------------- 1979 Ski Nautique (sold) 1997 Ski Nautique 1998 Super Sport Nautique |
Posted By: Jones
Date Posted: March-14-2011 at 12:12am
 subject picture------------- 1979 Ski Nautique (sold) 1997 Ski Nautique 1998 Super Sport Nautique |
Posted By: srbranum
Date Posted: March-14-2011 at 11:13am
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I believe my 75 is either brass or copper but it's not stainless. If it is stainless, why is there rust on it or is that just from the rusted support wire built in to the old hose? ------------- I have to keep her running 'cause I can't afford a new one |
Posted By: Jones
Date Posted: March-16-2011 at 2:02pm
I'm a little embarrassed but finally figured out this is not a stock feature but another jerry-rig by the former owner. Why am I not surprised. It turns out, at some point the exhaust tube end at the riser collapsed and instead of replacing or fixing properly, someone with connections to Midas Muffler cut about 2.5" of the damaged end off and fabricated a steel sleeve on the end and put the hose over the top.
Although WakeSlayer will surely make another "straight pipes!!" comment, I decided to try to fix it figuring if it didn't work I would go ahead and replace. I started off using a rasp to rough up the surface and made cuts in the end of the tube so the fiberglass cloth and resin would better adhere. 
I had to figure out some way of making a form but I couldn't find anything in my garage that would work with the 3.5" ID. I decided to use a convenience store soda cup from the recycling bin and some duct tape. 44oz. So far so good. 
I mixed the resin, coated the end of the tube and cup with the first coat and applied one layer of cloth. I repeated the process until I had about three layers of cloth and resin.  ------------- 1979 Ski Nautique (sold) 1997 Ski Nautique 1998 Super Sport Nautique |
Posted By: Jones
Date Posted: March-16-2011 at 2:12pm
I would have liked to put a few more layers on but my resin was setting up quicker than I expected.
I took a break for a few minutes while it hardened up enough to rasp off the rough edges and removed the form cup. 
I inspected it this morning and it was solid as a rock. Tonight I will put another couple layers on and coat the inside diameter with resin and hopefully buy the weekend, sand and paint. ------------- 1979 Ski Nautique (sold) 1997 Ski Nautique 1998 Super Sport Nautique |
Posted By: Keeganino
Date Posted: March-16-2011 at 2:19pm
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looks good ------------- "working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger http://www.correctcraftfan.com/diaries/details.asp?ID=4897" rel="nofollow - 1973 Skier |
Posted By: 8122pbrainard
Date Posted: March-16-2011 at 2:24pm
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Brad,
I'm glad you figured it out and are doing the proper fix on it. Looks good! I couldn't figure out the sections of tubing you found!! 
Scott, 400 series stainless will rust especially if not allowed to dry. It's commonly used for low end stainless exhaust systems. ------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
srbranum wrote:Posted By: Jones
Date Posted: March-16-2011 at 2:29pm
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So am I. The thing I can't figure out is, it would have been easier to do it the right way in the first place. ------------- 1979 Ski Nautique (sold) 1997 Ski Nautique 1998 Super Sport Nautique |
Posted By: Jones
Date Posted: March-19-2011 at 1:22pm
I got er done. It turned out to be an easier job than I expected although I did have to play with it a little to get the outside diameter just right.
I think I already know the answer but should I use any type of sealant between the new hose and exhaust tube? I'm assuming no but just wanted to check ------------- 1979 Ski Nautique (sold) 1997 Ski Nautique 1998 Super Sport Nautique |
Posted By: 8122pbrainard
Date Posted: March-19-2011 at 3:30pm
 Confirming no on any sealant------------- /diaries/details.asp?ID=1622" rel="nofollow - 54 Atom /diaries/details.asp?ID=2179" rel="nofollow - 77 Tique 64 X55 Dunphy Keep it original, Pete < |
Posted By: Jones
Date Posted: March-21-2011 at 1:52pm
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Thanks Pete. ------------- 1979 Ski Nautique (sold) 1997 Ski Nautique 1998 Super Sport Nautique |
Posted By: kapla
Date Posted: March-21-2011 at 4:07pm
looking good   ------------- <a href="">1992 ski nautique |
Posted By: Hollywood
Date Posted: March-21-2011 at 5:42pm
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Why not some die-electric "lube" so it will slide off easier next time? ------------- |
Posted By: Jones
Date Posted: March-21-2011 at 5:53pm
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I thought of doing that myself but when I got the new exhaust tube it already had a thin layer of what feels like silicone lube. ------------- 1979 Ski Nautique (sold) 1997 Ski Nautique 1998 Super Sport Nautique |