| Author |
Message |
    
Ted Broderick
Member
Username: tbrodes
Post Number: 13
Registered: 02-2008
| | Posted on Tuesday, May 13, 2008 - 04:53 pm: | 
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Hey guys,
My boat is a 1991 29' with twin FWC 454's. My exhuast ports do not have rubber flappers on the exhausts. The engine has plenty of rise above the water line, but I feel it would be good to install the flappers as another security against water intrusion. Who sells them, and how do you install them? My exhausts have fiber glass gelcoat all around then and are kind of molded into the boat (anyone understand cause I'm being vague)...
Any and all help appreciated! |
JUST-IN-TIME
Senior Member
Username: justintime
Post Number: 4103
Registered: 09-2006
| | Posted on Tuesday, May 13, 2008 - 07:25 pm: |
|
they sell them on this site
u need to know the diameter |
Ted Broderick
Member
Username: tbrodes
Post Number: 14
Registered: 02-2008
| | Posted on Tuesday, May 13, 2008 - 10:44 pm: |
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I see they attatch via a hose clamp. But I do not think that would work on my exhaust ports.... |
Fastjeff
Senior Member
Username: fastjeff
Post Number: 4417
Registered: 09-2003
| | Posted on Wednesday, May 14, 2008 - 07:37 am: |
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How about bolting on an aluminum angle and attaching a homemade rubber flapper to it? Did something like that on mine.
Jeff |
Ted Broderick
Member
Username: tbrodes
Post Number: 15
Registered: 02-2008
| | Posted on Wednesday, May 14, 2008 - 07:54 am: |
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yea not a bad idea jeff. I will have to look at them this weekend when I head down to the house. Would the flappers dampen the growl of the engine much? |
Brian Roderick
Member
Username: brian_from_boston
Post Number: 36
Registered: 05-2007
| | Posted on Wednesday, May 14, 2008 - 08:56 pm: |
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Hey Ted,
Brian from the northshore here. I have a 29 Blackfin Flybridge with twin 454's FWC and rubber flappers on exhaust ports at stern of boat and still get a good growl out of them. They sound pretty good from my house! Hope that might help you a little. |
Fastjeff
Senior Member
Username: fastjeff
Post Number: 4422
Registered: 09-2003
| | Posted on Thursday, May 15, 2008 - 05:14 pm: |
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..."Would the flappers dampen the growl of the engine much?"
Yes! I was surprised at how much.
Jeff |
Al Lombardo
Advanced Member
Username: knuckle47
Post Number: 177
Registered: 09-2007
| | Posted on Friday, May 16, 2008 - 01:37 pm: |
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Are these flappers something that really help this problem? I can add them to the exhaust ports on my exhaust as there is a bit of room but someone told me not to bother, any thoughts on that? |
Fastjeff
Senior Member
Username: fastjeff
Post Number: 4433
Registered: 09-2003
| | Posted on Friday, May 23, 2008 - 07:06 am: |
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Install them. All it takes is one sudden drop off plane to ram water up the exhaust pipes and into the motor!
Jeff
PS: I know you're too smart to go chopping the throttles like that (though some are not), but emergency stops do happen, and all it takes is once. |
