Time to fix up the ivertaflow
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=32868
Printed Date: November-17-2024 at 7:25pm
Topic: Time to fix up the ivertaflow
Posted By: TX Foilhead
Subject: Time to fix up the ivertaflow
Date Posted: February-19-2014 at 12:01am
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My muffler came with a very bad JB Weld patch job on one side and now the other side is starting to unravel so it time for a repair. Easy enough to cut out both pieces and replace them with some pieces of Centek exhaust pipe. My question that I don't think anyone has ever asked is what kind of resin to use for the repair? I've found a place that sells fiberglass sleeves which should make a it real easy to make a decent looking repair, but they mentioned something about standard epoxy resins only being good for about 195 degrees. High temp epoxy is out of the question, wife would have a fit if I cured the muffler in the oven. Not sure if I should be concerned about this or not, definitely don't want repair to melt, but I would prefer to use epoxy because I'm familiar with it. No, taking the muffler out is not an option, it would require $1000's of new stereo equipment to overcome the noise not top of the $1000's already spent. |
Replies:
Posted By: SNobsessed
Date Posted: February-19-2014 at 12:15am
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There is always the gas grill instead of the oven. The burgers may have an aftertaste for a while though. ------------- “Beer is proof that God loves us and wants us to be happy.” Ben Franklin |
Posted By: Air206
Date Posted: February-19-2014 at 12:27am
Shoot a temp laser at the invertaflow entry hose. I bet it's lower than 195..... You aren't epoxying the exhaust manifolds..... but that's coming from a hoser!(sic)  ------------- https://tinyurl.com/y6t5e3bu" rel="nofollow - 04 Air206 http://tinyurl.com/9urzgls" rel="nofollow - 91 Barefoot 78 SkiTiq |
Posted By: TX Foilhead
Date Posted: February-19-2014 at 1:32am
| I've never even thought about it until know. Unfortunately it's leaking so it's not going back in the boat until it's fixed. It had a small drip in the fall that I couldn't quite get stopped with a regular hose clamp so I did what everyone would do and bought some big stainless T bolt clamps. They do get much tighter, I crushed it down from 3.5in to 3in. |
Posted By: MartyMabe
Date Posted: February-19-2014 at 11:18am
Take it to the Gas Monkey Garage-- He'll fix it  ------------- 66 Skylark http://www.correctcraftfan.com/diaries/details.asp?ID=5041" rel="nofollow - 93 SN If you're not living in NC, you're just camping out! |
Posted By: TRBenj
Date Posted: February-19-2014 at 11:52am
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I repaired an invertaflow a few years ago with standard epoxy resin and its holding up just fine. The only time exhaust water should get above 195 is during an overheat. Remember that there is always cool water mixing with the 160deg water exiting the thermostat to cool it... ever hold your hand in the water exiting the boat? It wont burn you. I wouldnt cut the inlets off entirely. Just grind the damaged areas down until you reach good glass, and use what remains as your form. A solo cup (or similar) wrapped in wax paper does a fine job of holding the shape of the inlets as you wrap glass around them. If the hose wont cover the repair and youre worried about cosmetics, then you can mix in some black tint, or paint afterwards. |
Posted By: desertskier
Date Posted: February-19-2014 at 12:15pm
| I just fixed the muffler on a boat I recently purchased. One inlet was crushed and leaking and the main chamber had small pin holes all over it. Rather than replacing the inlet I pounded a section of SS muffler tubing into it. I think it was 2 1/2 inch and it fit perfectly. You can either use the tubing or if its slightly larger then use a tubing coupler. Then I sanded it and put on a couple coats of resin. I just used the bondo resin from Lowes. I haven't run it yet so I don't know if my repair worked but I think it will be OK. |
Posted By: TX Foilhead
Date Posted: February-19-2014 at 12:34pm
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Tim, if that fix worked then mine shouldn't have any issues. I'm planing on replacing the inlet tubes, because of the bad JB weld patch one side is such a mess I don't think there will be much left once that's all ground off. From the little bit of searching I've done building a complete new one wouldn't be all that difficult. It will definately be dressed up enough to get Pete's attention. 
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Posted By: hotboat
Date Posted: February-19-2014 at 1:22pm
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I think you are overestimating the sound difference in removing it, and it really frees up working on the front of the motor. I would be surprised if you would even notice a difference noise wise ------------- Brian |
Posted By: JoeinNY
Date Posted: February-19-2014 at 1:38pm
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I am pretty sure you would notice the difference, I worked on a excel with a 408 that has lost the invertaflow during the rebuild process and been converted to dual exhausts, it is pretty knarly sounding. Considerably louder than my 83 with 3 inch hoses and no mufflers was. The platform helps some with noise in the boat but it was enough to scare small children. No experience with it before the change but I am guessing it used to be more tame. ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1477 - 1983 Ski Nautique 2001 1967 Mustang 302 "Decoy" http://www.youtube.com/watch?v=cO5MkcBXBBs - Holeshot Video |
Posted By: hotboat
Date Posted: February-19-2014 at 1:43pm
It could be my lack of hearing  although my martinique was much louder than my bfn. At speed that is------------- Brian |
Posted By: JPASS
Date Posted: February-19-2014 at 3:16pm
Sounds like a good thing to me ------------- '92 Correctcraft Ski Nautique |
JoeinNY wrote:Posted By: dwouncmd
Date Posted: February-20-2014 at 8:15am
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I have almost exactly the same situation, leaking invertaflow, hack repair by PO, and the same questions regarding resin. I will follow your thread with interest... ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=6535&sort=&pagenum=2" rel="nofollow - 89 SN <a href="http://www.correctcraftfan.com/diaries/details.asp?ID=6567&sort=&pagenum=1" rel="nofollow">7 |
Posted By: Waterdog
Date Posted: February-21-2014 at 12:03pm
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Hysol Co. makes a resin - EA 9396 good to 400*f, room temp cure 90% in 24hrs full cure 7 days. or 1hr @ 150*f. Its our go to high temp resin. A little over $100 per Qt. kit I have run some tests to 500*f for 24 hrs. that had very good results. ------------- - waterdog - http://www.correctcraftfan.com/diaries/details.asp?ID=3896&sort=&pagenum=2&yrstart=1978&yrend=1978" rel="nofollow - 78 Ski Tique |
Posted By: TX Foilhead
Date Posted: February-21-2014 at 1:02pm
| That's more than pipe will take, I think it begins to fail about 350. The ends of both inlets sides are frayed where they end in the big chamber, I replaced the rubber exhaust pipe last year and it was cooked and a little mangled on the inside. I'm guessing this is all from a blown impeler, it would be interesting to know how long it takes everything to happen once the water stops flowing. |