Transom thru hole

[jmoneilthe2]

I was hoping someone could guide me to purchasing new thru holes for my transom that have a flap to keep water from coming in

 

[Fishtales]

Grady White Engine Well Scuppers & Retaining Ring Set - OEM for sale online | eBay

Find many great new & used options and get the best deals for Grady White Engine Well Scuppers & Retaining Ring Set - OEM at the best online prices at eBay! Free shipping for many products!

www.ebay.com

 

[Fishtales]

https://rnr-marine.com/images/Grady-White_all-boats_2008_Parts-Manual.PDF

Good source for some GW parts.

 

[Diad]

Flush Mount Scupper Valve Assembly | T-H Marine Supplies - T-H Marine Supplies

These scupper valves are simply the best and most fool-proof of any flush mount scupper valve available. The flapper is molded of a flexible thermo-plastic that is totally impervious to the effects of sun and chemicals found in the marine environm

thmarinesupplies.com

 

[Mustang65fbk]

I'd replace the ones that you currently have with the style that Diad linked. They have the set screw holding the rubber flapper in place and are a bit easier to replace just the flapper as opposed to having to pull the entire thing off just to replace them.

 

[SkunkBoat]

new flaps on amazon https://www.amazon.com/dp/B0019M5JPY?psc=1&ref=ppx_yo2ov_dt_b_product_details

See this thread to replace the tubes
https://www.greatgrady.com/threads/transom-maintenance.37746/post-267266

 

[Fishtales]

Looks like a direct replacement using current holes. Seems like the way to go. SeaSense makes some nice products.

 

[Hookup1]

If you want to match the holes up take the scupper flap off and look for markings. I went thru this last year on mine. It's amazing how many scuppers look the same but don't match up. Don't remember which ones worked - out of town and no receipts handy.

 

[jmoneilthe2]

new flaps on amazon https://www.amazon.com/dp/B0019M5JPY?psc=1&ref=ppx_yo2ov_dt_b_product_details

See this thread to replace the tubes
https://www.greatgrady.com/threads/transom-maintenance.37746/post-267266

I bought 4 new scuppers from Amazon and they fit perfect. My only problem is that on of the flaps won't close because the inner brass tube protrudes out to much. I saw a link how to replace the tubes so I think I will try this out.
Thanks for all the information.

 

[SkunkBoat]

I bought 4 new scuppers from Amazon and they fit perfect. My only problem is that on of the flaps won't close because the inner brass tube protrudes out to much. I saw a link how to replace the tubes so I think I will try this out.
Thanks for all the information.

Cut the old flap off and use as a gasket to extend it out. Thats what I did

 

[jmoneilthe2]

Cut the old flap off and use as a gasket to extend it out. Thats what I did

I tried that but it the flap still sticks out. I ended up grinding down the brass that was sticking out just a bit. The flap still sticks out a tiny bit, but If I'm not mistaken, don't the all stick out a bit? Or should they lay completely flat?

 

[SkunkBoat]

I tried that but it the flap still sticks out. I ended up grinding down the brass that was sticking out just a bit. The flap still sticks out a tiny bit, but If I'm not mistaken, don't the all stick out a bit? Or should they lay completely flat?

Sometimes they stay open a little until water pressure closes them but they should not be pushed out by the tube

 

[seasick]

Save the old gaskets and use them with the new ones to add some space between the flop and the tube edge.

 

[DennisG01]

How much did you grind the bronze tube? That's very thin metal - there's not much to grind... which means you may very soon compromise your transom wood core. Be careful.

- Get an extra plastic ring and use that against the boat, first.
- Shim it out with washers or nuts and fill the space with goop.
- Get some gasket material from a local parts store and make your own.

Lot's of options.

 

[Sparkdog118]

 

[Sparkdog118]

This works great on my boat