Exhaust Flappers
Printed From: CorrectCraftFan.com
Category: General Correct Craft Discussion
Forum Name: Common Questions
Forum Discription: Visit here first for common questions regarding your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=14193
Printed Date: November-23-2024 at 8:53pm
Topic: Exhaust Flappers
Posted By: Nautique2001
Subject: Exhaust Flappers
Date Posted: June-27-2009 at 8:58pm
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One of my rubbers broke off my exhaust pipe today. I just spend $40 for two new ones. Are they even necessary? The classic Correct Crafts don't have them. I assume it's a noise control device?
Ken ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1052&sort=&pagenum=4&yrstart=1986&yrend=1990" rel="nofollow - Nautique 2001 |
Replies:
Posted By: 81nautique
Date Posted: June-27-2009 at 10:41pm
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Last time one of my rubbers broke I didn't sleep for a month. ------------- You can’t change the wind but you can adjust your sails |
Posted By: Riley
Date Posted: June-27-2009 at 11:17pm
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Ken, I wouldn't think you need them with the type of manifolds that you have. However, many people have them including me. Are yours the ordinary rubber type, but are glued inside the plastic exhaust flange? ------------- |
Posted By: Hooty222
Date Posted: June-28-2009 at 12:59am
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Someone made a comment one time... The exhaust flappers were for the rare instance (Not sure how) the engine on shutdown could pull exhaust/water backwards thru pipe into engine after dieseling... Smarter people than I.
Bob ------------- 1986 Ski nautique 351 1988 Barefoot nautique 454 |
Posted By: Nautique2001
Date Posted: June-28-2009 at 9:09am
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Yes, mine are the standard rubber type. It seems like they need to be replaced every 3-4 years, which isn't bad.
Thanks for the feedback. It makes sense that it may prevent water from being sucked through. I thought it was more for noise damping. Ken ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1052&sort=&pagenum=4&yrstart=1986&yrend=1990" rel="nofollow - Nautique 2001 |
Posted By: scottb
Date Posted: June-28-2009 at 12:45pm
| I have also heard they are good for keeping critters from building nests and such in there. |
Posted By: 86BFN
Date Posted: June-28-2009 at 3:10pm
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I've had two boats with them on. Took them both off, never had a problem.
I think it sounds better. I always back into the water slowly when launching! Good idea on the critters tho. Maybe I'll use them for storage. JIC. ------------- 👣 Steve http://www.correctcraftfan.com/diaries/details.asp?ID=4057&sort=&pagenum=1&yrstart=1986&yrend=1986" rel="nofollow - 86 Barefoot Nautique 89 Martinique Former Owner: 93 Hydrodyne 350 MAG |
Posted By: dt's76tique
Date Posted: June-28-2009 at 10:48pm
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My originals broke off and i replaced them. ran one summer with out them no problems. I did get new ones from wholesale marine they are $15 each
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Posted By: The Godfather
Date Posted: June-29-2009 at 1:20am
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That was a good one Alan and now you have Ken thinking "OH NO"...hehe
To much wine.... |
Posted By: SN206
Date Posted: June-29-2009 at 2:01am
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Seen a "2001" suck water last year. Up until that time I did not think they were needed. They funny thing was he had replacements in the boat, but he had wanted to wait until after his test run. Fortunately, he was still on his traler on the ramp while he was tuning the carb. It ruined his day. Think the $30 dollar assurance would be worth it ------------- ...those who have fallen and those who will. |
Posted By: 1man1dog1cj
Date Posted: July-09-2009 at 1:33pm
Mine have become kind of deformed over time. How do you say they are attached? Glued? I think mine have hose clamps on them, but that could just be on the exhaust where it comes thru the hull.  ------------- http://i19.photobucket.com/albums/b182/whit7291/100_0577.jpg - 85' Ski Nautique |
Posted By: WakeSlayer
Date Posted: July-12-2009 at 3:10am
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My SAN has hoseclamps. I removed them from the Mustang.
Maybe you could try a hoseclamp next time, Alan. ------------- Mike N 1968 Mustang |
Posted By: Sam B
Date Posted: July-12-2009 at 10:58am
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What is the sound change on vs. off?
Sam ------------- Loud pipes save lives!! 2011 Green Lake Reunion Best of Show. %20http://www.correctcraftfan.com/diaries/details.asp?ID=3391&sort=&pagenum=3&yrstart=1973&yrend=1973" rel="nofollow - Sam's 73 |
Posted By: 86BFN
Date Posted: July-12-2009 at 4:15pm
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Off sounds slightly better, not a lot thou. ------------- 👣 Steve http://www.correctcraftfan.com/diaries/details.asp?ID=4057&sort=&pagenum=1&yrstart=1986&yrend=1986" rel="nofollow - 86 Barefoot Nautique 89 Martinique Former Owner: 93 Hydrodyne 350 MAG |
Posted By: Nautique2001
Date Posted: July-12-2009 at 6:58pm
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I did replace them. My luck would be that I'd sink have an engine malfunction. For $40, it's a piece of mind. There had to have been a reason Correct Craft Inc. installed them, right?
Ken ------------- http://www.correctcraftfan.com/diaries/details.asp?ID=1052&sort=&pagenum=4&yrstart=1986&yrend=1990" rel="nofollow - Nautique 2001 |
Posted By: skimzone
Date Posted: July-14-2009 at 2:20am
I had a rare occurance approx 1 yr ago, customer with a 2001 bought a boat with no flappers. At the ramp he drop the boat in, steep ramp+ fast launch= water in the engine. SALT WATER. He tried to turn it over with the plugs in- hydraulic instead of compression. Rod damage. If he would have pulled the plugs and spun er over- he wouldnt have paid me to rebuild the engine. I say play it safe- dont fool around without rubbers!!!  ------------- '78 ski nautique '01 sport air nautique |
Posted By: kapla
Date Posted: July-15-2009 at 7:37pm
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Joe you kill me LOL...i like your dumb clients stories!!!
I run my boat with out them quite a long time..then I decided to put it again...just as it came from the factory it have to be a good reason...But in boats with the invertaflow I think its very rare that the water could make up that way when going reverse or launchind the boat. The muffler sits very high.... ------------- <a href="">1992 ski nautique |
Posted By: skutsch
Date Posted: July-15-2009 at 8:42pm
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Joe, yes please more "dumb customer" stories, they kill me, but usually there is nugget in their... The 67 Nautique never had flapper and we have never had a problem, but no way is the water gonna make it through the Eaton marine conversion manifolds thats part of the Interceptor, I think those things are as high as the gunnels... ------------- Our http://www.correctcraftfan.com/diaries/details.asp?ID=4669" rel="nofollow - 98 Sport Nautique My Dad's 63 Ski N |
Posted By: skimzone
Date Posted: July-16-2009 at 12:07am
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Hey- thier mistakes keep my hobbies floating- regarding flappers- thank god noone has a 1996 and later gm- shut her down from idle 99% chance you will have water in the engine. Designe flaw on the vortech 64cc head. valves over lap=intake/exhaust very briefly open at the same time. Helps with performance and economy- But sucks-literally!!I have rebuilt countless engines due to that flaw- better riser design would fix the problem. a quick low rev prior to ignition kill also can save alot of them too. The exhaust force the water thru the turn down, thus less chance of injestion. They are not dumb customers- Just NO common sense I wont share anymore laughs with you guys=k ------------- '78 ski nautique '01 sport air nautique |
Posted By: fastjohnny
Date Posted: July-16-2009 at 1:19am
| Good to know! |