Main Floor Drains

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handyman_special

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Where should the floor drain to ? My V-20 just dumps to the shelvs that the oil tank, and the battery sit on.......
 
Depending on the year they either drained into the bildge or they drained via a plastic hose to thru hulls mounted on the sides just above the water line.
 
Its a 87, and i guess i need to run a hose to the bildge from the fitting, right now it just drains on the shelf and it has a hole in it that goes somewhere
 
Here is a picture of my floor drain. It drains from the deck and out the side. Does your V have hull fittings ?
Find out first before you getter her wet.

DSC01753.jpg
 
H, I think that's exactly where they were made to drain. The cockpit floor fittings (in both corners) of my '86 ... dump right onto the battery shelf as well. Some here say - that their pre-'88 models drain outside the hull. I have been meaning to take a yardstick and level .... and try and determine whether my floor has any positive height above the outside waterline. If it does, then I could add a hose to the floor fittings and plumb them outside the hull. But I dont think that is going to be the case. If it were, I would imagine Wellcraft would have done it from the factory. The 1988 and later models - had the floor raised a few inches to accomodate draining overboard.
 
I really don't understand that at all, mine is an 85. Every boat I looked at ( a lot ) had thru hulls that the scuppers drained to. I know earlier boats, not sure when it started had scuppers that drained into the bildge area.
???
 
Willy, how well do your floor drains work ? Do you have issues with outside water flowing back in ? Or is there sufficient height differential to prevent that ? Just wondering.
 
As far as I know, I dont have a raised floor with the recessed floor drains. Your V for the year should have scuppers. If they dont, they may have been glassed over for some reason. The scuppers are right at the waterline. But I installed a deck drain with a ball in it to stop water from coming in. Also, if you look at my drain that i posted, I have a ....cant remember what its called now, but there is a rubber flapper inside the valve that stops water from coming in, but lets water out. I picked them up at West Marine. You really need to post pics. of your drain set up so we can get a better understanding as to what you got.
 
They do well on my boat, if you check my gallery you'll see they sit about two inches above the water line. Even so if you got guys standing in the back and your rocking they let water in and then it flows back out. They all do. I've been on big sport fishers that do. You can add a one way drain like I think Hammer did and that should work but they will not be as free flowing and you will have to make sure nothing clogs it up inside.
What I do is before I launch I put in three plugs and they all sit together in the transom compartment. One is the standard screw in garber plug of bronze, the other two are the rubber and metal type garber plugs, the kind that you put in the hole and flip down the toggle to snug it. Those two go in the scupper holes, perfect fit. If I get into any snotty stuff I just pull them right out (two fingers) or if I am washing fish crap off the deck. Etc. If it is just normal fishing and playing, even in a heavy chop I never get any water in the boat so they just stay in.
If I got any water from super models climbing in and out from swimming tubing etc I just pull one of the plugs when I start moving forward and it all runs out in two seconds.
 
I like the one way drain for piece of mind, but do agree with Willy about clogging. I have a screen for large objects, but I track in alot of sand to the boat whenever I climb in and out. Gotta hose out the drains really good to make sure I get all the sand out.
 
Mine's an 87 and drains out the sides as well. It wouldn;t happen to be an I/O, would it. They went to the raised deck about 80 or so, maybe 79.

Airslot
 
My hunch is that the I/O's may have drained into the bildge longer into the prodection run? It's a stretch of a guess, but the I/O's weighed a couple hundred pounds more and had full transom, so maybe wellcraft just let em drain to the bilge?

Airslot
 
Well sorry I am late on this but my 84' is an I/O and she also drains into the bilge. the through holes in the back of the deck go right onto the battery shelf in the bilge area.

I have also thought numerous times of trying to plumb them through the side of hull. But not sure of the deck vs. water line? Anyone ever try this? just curious? Every time it rains when my boat is at the marina, she fills up to the bilge pump level and sits real low in the water :-/
 
That was my hunch. I can think of two reasons. The thought with full transom that you would be alright, or that with 350 Chebby she might sit a just a bit lower than with a 380lb outboard?

Those are my thoughts on the why's?

Airslot
 
Air,

So do you think i could go to through holes with my original 470 Mercruiser? Or would the deck be below the water line?
 
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