2001 Grady 265 scupper reposition height

[Sketchywind]

I’m having my transom rebuilt and want to reposition the scuppers to handle new 4 stroke weight.

How much higher is a good position to allow deck to drain and prevent scuppers from sitting wet?

I’ve read 1.5” to 2”

I’ll post the transom rebuild project soon.

Thanks !

 

[DennisG01]

How far below the cockpit floor are they currently?

The absolute closest you could go to the floor BOTTOM is determined by the scupper hose, fitting, and access. The hose is roughly 2" OD. So that's your bare minimum - although that would be really tight. Better to go a little further and get better drainage, too. But that's 100% your call.

HOWEVER... how much more do they actually weigh? Engines like Mercury's are quite light. Compare your weights... stack that amount on top of the engines and see what it does. Maybe it'll be fine?

 

[Sea Shift]

Hey Frank, whose doing the work for you? Grand Marina? I may be interested in that modification as well. Let us know how it goes if you would. THanks.

 

[Sketchywind]

Hey Frank, whose doing the work for you? Grand Marina? I may be interested in that modification as well. Let us know how it goes if you would. THanks.

Hey Doug, I having KKMI in Sausalito do the transom work. H and M Marine is doing the Suzuki repower next door to KKMI. The job manager at KKMI ( now known as Safe Harbor Sausalito) is a marine architect and really knows his stuff. Here’s a few pics so far. I’ll have a detailed photo drop when it’s all done. The transom was only partially wet on outer plywood, so didn’t need a full recore. KKMI using G10 for area around motor bracket and divinycell to keep it light. All drain holes and motor bracket holes sleeved with G10 tubing. The aluminum transom plate screws allowed water to leak into the out layer of plywood. The fiberglass between the boards saved the inner plywood from water engress. Btw, Grady did not use stainless ring clamps on any of the scupper hoses. That’s a big fail at the Grady factory!

 

[SeaVee]

My scuppers are fine with 200 Zuki’s on a 2001. Put SKR while you’re at it!

 

[DennisG01]

Btw, Grady did not use stainless ring clamps on any of the scupper hoses. That’s a big fail at the Grady factory!

Have you had the boat since new? That's really, really odd, you know? But stainless CAN rust overtime - especially when left in very wet environments. Stainless only "stains less" than other metals.

 

[SkunkBoat]

Looking good. I have a 2000 with the 200 zukes. I did not raise the scuppers.
They are only low when full of gas and ice.

I've replaced the scuppers and hoses. Its a bitch.
I think you could move them up so the new bottom of the hole is where the top of the hole is currently. So ya 1.5 inches

 

[Sketchywind]

Here are my scupper hoses. Cracking and showing rust. I cannot verify if they are original Grady, but don’t see why the previous owner would have swapped them out. I reached into bilge and all of them are missing clamps on both ends. Odd for sure and happy to get them replaced during the scupper relocation.

Looks tight in there!!

 

[SkunkBoat]

If you have not yet, see this post.
https://www.greatgrady.com/threads/deck-drain-scupper-surprise.28979/

 

[Sea Shift]

Hey Doug, I having KKMI in Sausalito do the transom work. H and M Marine is doing the Suzuki repower next door to KKMI. The job manager at KKMI ( now known as Safe Harbor Sausalito) is a marine architect and really knows his stuff. Here’s a few pics so far. I’ll have a detailed photo drop when it’s all done. The transom was only partially wet on outer plywood, so didn’t need a full recore. KKMI using G10 for area around motor bracket and divinycell to keep it light. All drain holes and motor bracket holes sleeved with G10 tubing. The aluminum transom plate screws allowed water to leak into the out layer of plywood. The fiberglass between the boards saved the inner plywood from water engress. Btw, Grady did not use stainless ring clamps on any of the scupper hoses. That’s a big fail at the Grady factory!

I cant wait to see the photo dump. When you say scuppers, are your talking about the twin side by side deck drain scuppers? Will they be pulling those out later?

 

[Sketchywind]

I cant wait to see the photo dump. When you say scuppers, are your talking about the twin side by side deck drain scuppers? Will they be pulling those out later?

Yes, the outer four scuppers for the deck drains. The will be pulling brass thru hulls and repositioning for the extra Suzuki weight vs the HPDI. The scuppers were underwater with the HPDI when I had about 150 gallons fuel and full oil reserve tanks. Luckily, those scupper hoses didn’t leak. The yard manager quoted $2000 to reposition and replace hoses for all four scuppers.

 

[Aussie_Boss]

went through the same thing on my 2001 Grady. I ended up putting 300hp Yamahas on the back. They are a bit heavier, but the main reason for lifting them was for backing down on fish as we all know these were installed a bit low from factory.

On mine, I ended up installing the scuppers around 2.5 inches below the finished deck height. It takes a bit of time and work to sort out, but it’s definitely worth doing.

While you’re in there, if you are stepping up to bigger horsepower motors, it’s not that hard to add a couple of extra knees and really stiffen up the transom.

They’re great boats and definitely worth spending the money on.

 

[SkunkBoat]

went through the same thing on my 2001 Grady. I ended up putting 300hp Yamahas on the back. They are a bit heavier, but the main reason for lifting them was for backing down on fish as we all know these were installed a bit low from factory.

On mine, I ended up installing the scuppers around 2.5 inches below the finished deck height. It takes a bit of time and work to sort out, but it’s definitely worth doing.

While you’re in there, if you are stepping up to bigger horsepower motors, it’s not that hard to add a couple of extra knees and really stiffen up the transom.

They’re great boats and definitely worth spending the money on.

Looks like you went with smaller diameter fittings and hoses. What type of new fittings in the deck?

Oh! you took out the "wall" in the battery compartment.

Like that you got rid of the original recessed tabs.

FYI, if you are going to back down, you better have more than the OEM tailgate catches or you will be knee deep. Ask me how I know....

Sorry, Don't want to hijack this thread talking about your boat.

 

[Aussie_Boss]

Looks like you went with smaller diameter fittings and hoses. What type of new fittings in the deck?

Oh! you took out the "wall" in the battery compartment.

Like that you got rid of the original recessed tabs.

FYI, if you are going to back down, you better have more than the OEM tailgate catches or you will be knee deep. Ask me how I know....

Sorry, Don't want to hijack this thread talking about your boat.

Deck drain and hose is as per original, outlet is slightly smaller but I can play with that if it becomes a problem.

Installed the seakeeper rides, hopefully they work as per advertised. Help keep the boat sorted when at speed.

Rear transom is being modified to be more water tight than factory and will definitely be mechanically locked in place……..

 

[Sketchywind]

went through the same thing on my 2001 Grady. I ended up putting 300hp Yamahas on the back. They are a bit heavier, but the main reason for lifting them was for backing down on fish as we all know these were installed a bit low from factory.

On mine, I ended up installing the scuppers around 2.5 inches below the finished deck height. It takes a bit of time and work to sort out, but it’s definitely worth doing.

While you’re in there, if you are stepping up to bigger horsepower motors, it’s not that hard to add a couple of extra knees and really stiffen up the transom.

They’re great boats and definitely worth spending the money on.

Thanks for info and pics of your project. I’ve seen some 2005 GW265 with scuppers roughly inline with splashwell drain holes. My boat is wet slipped all year, so definitely need scuppers out of water to avoid relying on the hoses to keep the boat afloat.

 

[Sketchywind]

If you have not yet, see this post.
https://www.greatgrady.com/threads/deck-drain-scupper-surprise.28979/

Thanks for the link to your scupper replacement. My 25 year old hoses are looking the same; cracked and rusting wire.

 

[SkunkBoat]

Thanks for the link to your scupper replacement. My 25 year old hoses are looking the same; cracked and rusting wire.

yep read thru the whole thing There are some deck drain p/ns from other guys and some "good to know before you start" things.

 

[Sketchywind]

Update: The boatyard drilled out the new scupper locations. I had the 2-stroke oil fill caps glassed over too. They had to cut out the brass scuppers like Skunkboat’s project. Before and after pics below.

 

[SkunkBoat]

Replace those popout pie plates with screw type plates.

 

[Fishtales]

I'd do 1 to 1.5 inches below the deck floor and add check valves.