Boats For Sale:
2 of us need Damper help |
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mdvalant 
Grand Poobah 
Joined: May-06-2009 Location: Bellevue, IA Status: Offline Points: 2059 |
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 Topic: 2 of us need Damper helpPosted: August-05-2011 at 12:42pm |
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Hey all!!!
I have seen quite a few talks about Damper Plates and was wondering what they do, how hard they are to change, and why they even go bad... A friend here on CCFAN and also someone I know personally on our ski team (phil, 70CC) and us have the same kind of issue going on. In idle we hear the tap tap click click knock knock coming from below the floor in the back. I've read enough to understand that most likely it is the damper plate. What do we need to do? Is it boat threatening? It is after-all, pretty annoying. Thanks fellas -Mike |
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8122pbrainard
Grand Poobah
Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: August-05-2011 at 2:44pm |
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Mike,
The dampner is really a flex coupling to the trans. They have springs between the main plate that attaches to the flywheel and then to the output splined hub to the trans input. The springs fatigue and do break. Back in the days when solid couplings were used, the modern hydraulic marine trans's were being torn up by the torsional vibratins from the engines. |
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kapla
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Joined: March-27-2008 Location: BA, Argentina Status: Offline Points: 6148 |
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Posted: August-05-2011 at 2:57pm |
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as far as i know they sometimes do that noise if the idle is set low....
mine does it when I put into gear, give some gas and quits..I have a new damper... |
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<a href="">1992 ski nautique
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mdvalant
Grand Poobah
Joined: May-06-2009 Location: Bellevue, IA Status: Offline Points: 2059 |
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Posted: August-05-2011 at 2:59pm |
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You know, the boat started doing this when we put the 1442 on.
Would that make a diff? |
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OverMyHead
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Joined: March-14-2008 Location: MN Status: Offline Points: 4861 |
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Posted: August-05-2011 at 3:24pm |
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With the increased surface area did the 1442 drop your in gear idle rpm?
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For thousands of years men have felt the irresistible urge to go to sea, and many of them died. Things got better after they invented boats.
1987 Ski Nautique |
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mdvalant
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Joined: May-06-2009 Location: Bellevue, IA Status: Offline Points: 2059 |
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Posted: August-05-2011 at 3:25pm |
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It might have...
Phil has a 97 ski with the same motor same tranny we have in our 2000 sport. Both of us had our problems start when we put the 1442 on. When we move the throttle JUST off idle the tick knock goes away. |
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fanofccfan
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Joined: December-13-2009 Location: North Bend NE Status: Offline Points: 1779 |
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Posted: August-05-2011 at 9:28pm |
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i had a 1981 ski with a bad(really bad) dampner plate and i went thru several transmission front pumps before i found the problem. i never noticed any stange noise from it being bad. i personally made some extreme noise when i would put in a new front pump, go to the lake to ski, and after 5 mins in the water the boat would not go forward
 . finally noticed the bad plate, replaced it and the front pump..again., and as far as i know the boat is still in operation.
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8122pbrainard
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Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Posted: August-05-2011 at 9:40pm |
Bill, It's great you figured out the problem bu It's also sad that you had the tran's problem due to a 100$ plate!!! At least you got it figured out! 
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fanofccfan wrote: