Rear drain hole - what does that drain?

[jeremy90]

I know, it drains water... but from where does that water come?

Let me explain... last season, when I got off the lake I take out both plugs (under front of engine, and the rear near the port side muffler) and water comes out of both (at least I think it did). This spring, I was washing the boat with both plugs out, and no water came out of the rear opening. I thought, "huh, maybe its clogged", so I used a pipe snake and stuck it in there like 10" and got nothing. So I put the hose into the hole and let it run for a few seconds, but nothing came back out!

So I was on the lake and purposefully got a decent amount of water into the boat, just before I put it on the trailer. Got it on the trailer, removed the rear plug and NOTHING. Removed the front plug and it drained for 5-7 minutes (it was actually a LOT of water LOL).

So what water drains out of there? Is the entire bottom of the boat "connected" so that all that water can drain thru EITHER hole, depending on the angle of the boat?
Is it a problem that nothing seems to be draining out of the rear? Is it plugged? Or am I just mis-remembering and maybe the rear drain never did actually drain water?

[UNSTUCK]

Dumb question, but what what the angle of the boat when you've had the rear plug out? Try draining from the rear with the the boat on the trailer, just as you pull it out of the water, still on the ramp. I do that and usually get water there. Not sure which boat you have as you didn't mention it, but I believe they are all connected through out the hull, so water can drain from either drain, just depending on the direction of water flow.

[skiguy]

I've noticed the low point of my hull isn't in the rear. I can only drain water out the rear plug when it's on the ramp. It's possibly because of the angle/attitude of the boat on the trailer or perhaps it's the convex v hull design.


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[JLG]

The older 20i boats do have 2 plugs and the front is most likely the only one you will get any water to drain out of. It is water that is taken on from dipping the boat and such and will sit in the front bilge area of the bow until the boat is tilted back far enough to hit the drain. My old 20i didn't take much water on unless someone would dip it while under tow. I rarely removed the rear plug as it won't net much water drainage anyway.

The front under seat and port locker on the 20i will hold a lot of water if dipped or rained on with cover off so beware. I always had to shop vac or use a chamois to remove water after each outing.

[mdk681]

Both plugs drain the bilge area, which is basically the entire bottom of the boat. Like others said, where the excess water drains out will depend on the angle of the boat. Keep in mind you have a bilge pump, that may pump any water collecting down there out during use. I have 2 plugs as well on my 21v. While sitting on my boat lift, if I were to pull the back plug, I would get nothing. But if I removed the plug in front of the motor, I would get the small amount of water that ends up in the bilge. That seems to be the lowest point of my boat and where everything settles. Rarely do I have much water down there, but somehow a little bit always ends up collecting.

[jeremy90]

Yeah it's a 20i. The interesting thing, though, is that I did take the plug out while on the angle of my driveway. At the time there was maybe 2" of water in the bottom of the boat under the engine.

When I flooded it at the lake, I dipped the nose and got more water than I expected. I didn't have the bilge pump on so when I took it out of the water it was still FULL of water. I can't imagine that large of a clog.

[jeremy90]

The front under seat and port locker on the 20i will hold a lot of water if dipped or rained on with cover off so beware. I always had to shop vac or use a chamois to remove water after each outing.

Oh man yeah, especially the front under the 3 seats. And that doesn't drain down into the bilge, either. At least not very fast. We get as much out as we can and take the front seats off for the 1-hour drive home - the air helps a lot but it's still wet when I get home.