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Deck scupper / drain problem

Old 05-22-2019, 04:26 AM
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Default Deck scupper / drain problem

Guys, I am setting up a new to me 24í boat.

The deck drains leak and I am not sure what to do. Iím open to suggestions.

I replaced the TH marine deck scuppers with a ball inside them, and sea dog transom flaps. Both are pictured below and brand new. Well she still takes water on the deck once you step near the stern.


https://www.amazon.com/TH-Marine-Cockpit-Scupper-Drain/dp/B00FZHBRA0/ref=asc_df_B00FZHBRA0/?tag=bingshoppinga-20&linkCode=df0&hvadid=%7Bcreative%7D&hvpos=%7Badposition%7D&hvnetw=o&hvrand=%7Brandom%7D&hvpone=&hvptwo=&hvqmt=e&hvdev=m&hvdvcmdl=%7Bdevicemodel%7D&hvlocint=&hvlocphy=&hvtargid=pla-4583657821880420&psc=1 https://www.amazon.com/TH-Marine-Cockpit-Scupper-Drain/dp/B00FZHBRA0/ref=asc_df_B00FZHBRA0/?tag=bingshoppinga-20&linkCode=df0&hvadid=%7Bcreative%7D&hvpos=%7Badposition%7D&hvnetw=o&hvrand=%7Brandom%7D&hvpone=&hvptwo=&hvqmt=e&hvdev=m&hvdvcmdl=%7Bdevicemodel%7D&hvlocint=&hvlocphy=&hvtargid=pla-4583657821880420&psc=1


https://www.westmarine.com/buy/sea-d...-7-8--14473615

I just ordered transom ping pong scuppers (rabud) which will be at water line as a last resort.
TH marine makes an in-line check valve but I am not sure if there is enough room to install them.

Can anyone help? Iím open to suggestions.

*At rest the transom scupper openings are at water level.
Also, the boat is kept on a trailer.
Old 05-22-2019, 05:29 AM
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It's possible that your boat is heavier than normal due to some soaked foam or extra weight at the stern.If weight is the issue,you could try to relocate some forward.Scuppers that are underwater when someone is at the stern are useless.
Old 05-22-2019, 05:35 AM
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I was having the same issue in my boat. Tried a number of things. My current setup is the cockpit drains with the check-ball. I would suggest you remove the duckbill scupper from the transom. This will allow for the maximum amount of water to flow to the checkball and hopefully it will seat and block the water. Flushing the checkball drains with high pressure water will help keep debris from collecting. Hope this helps.

Kevin
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Old 05-22-2019, 05:44 AM
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Thanks guys/

I donít believe the boat is stern heavy or waterlogged.

I will try removing the flaps at the transom to allow more flow to hit the ball. Hopefully that helps.

I had blasted the ball with water, maybe I can try scrubbing it.
Old 05-23-2019, 05:46 AM
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Kevin- Did removing the flaps allow the check balls to seal completely? Did you have a dry deck? Or still a bit of leakage
Old 05-23-2019, 05:58 AM
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You can do what one guy on here did, convince yourself that it’s a self washing deck and everyone else is jealous their boat doesn’t have it.
Old 05-23-2019, 06:04 AM
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Originally Posted by JoshPtJudith View Post
Kevin- Did removing the flaps allow the check balls to seal completely? Did you have a dry deck? Or still a bit of leakage
I removed the flap from the scupper at the transom. The only thing that can block water from coming through the deck drains is the checkball. I would say it works most of the time. There are times the checkballs donít make a perfect seal and water gets on the deck. This has been my setup now for about 5 years and I find it manageable.
Old 05-23-2019, 06:08 AM
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Ok great! Letís hope I have similar results

One more question- At rest with no persons in the boat are your transom drains above water level or at water level?

Mine are at water level
Old 05-23-2019, 06:14 AM
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Originally Posted by JoshPtJudith View Post
Ok great! Letís hope I have similar results

One more question- At rest with no persons in the boat are your transom drains above water level or at water level?

Mine are at water level
my transom drain is below the water line at all times. At rest with no other persons in the boat, the deck drains perfectly every time.
Old 06-20-2019, 07:34 AM
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I recently replaced my old evinrude 225 (89) with a newer evinrude 250 DI (2003), which added some weight to my transom (22 pursuit walkaround). I have noticed that the scuppers went from just above the water line to just at it. It bothers me, but I haven't had a chance to run the boat too often yet this year, so I'll see how it plays out going forward.

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