2001 Challenger 14.5 foot scupper valve hose routing info needed

[JamesHBCA]

I lost my boat cover halfway on my trip but that's another story. Last night it rained hard with no cover on the boat and the passenger compartment filled with water about 6 inches deep while sitting on the trailer. It was tilted back enough it should have drained.
I removed the scupper valve and used a wet dry vac to suck all the water out, it all came out fine. Then I ran a hose through the line and it came out clean so there's nothing blocking the line.
Yesterday it was windy when I took the boat out and they'll some water came over the bow. Took a really long time for it to go out the back of the boat.
I think the problem is the hose is very long and doesn't run straight back to scupper valve from the passenger compartment. Is it supposed to have a loop in it? And if so, where should that loop be and how high?
Is it normal for the water to not go out the back until the boat is up on plane?
Does this Scupper valve create a section to suck the water out once the boats in motion?

 

[JamesHBCA]

So no one seems to have an answer for this. let me ask it another way.

When your boat is on the trailer and it rains with no cover on it, does it fill up with water or does it drain out the scupper valve?

Checking the service manual, there is no indication of the hose being required to be routed higher than the water line, or have any loops in it. I am sure my hose is original, but it is longer than required to run straight back to the scupper and the excess loops up keeping the water in the boat. if I cut it shorter, I am sure the rain water would drain out while on the trailer.

 

[Waterluvr]

James, I have a '97 challenger 14.5 with the drain opening to the far right of the floor under the helm seat. It runs straight directly to the transom and out. Any water that accumulates in the boat while sitting on the trailer will run directly out so long as the hull is leaning slightly to low side at starboard so it runs that way to the drain opening.

I was washing the floor of the boat over the weekend while it was anchored and it still allowed the water out of the boat just with the motion of the hull against wake coming towards the bar we had dropped the hook on. It has a bellows on the transom that opens to allow water to flow out and pinches back up when pressure tries to go towards the transom.

Here is a pic that shows the drain hose on the far starboard side of the bilge floor, it has the transducer slack wire coiled and wire tied on top of it in the picture. Hope that helps you, the smaller white hose you see looped in the picture is for the bilge pump and that is normal to prevent siphoning.

 

[JamesHBCA]

Waterluvr, thanks for the pics. Mine is similar but the hose is black and has a lot more slack in it causing it to loop up. I also have the dual engines so it is a lot more crowded back there, so the routing is not as straight. Not easy to get to the transom to cut the hose shorter. Also it looks like it has to clamp on one of the smooth sections of the hose. Not sure if there is enough slack to cut it back to the next smooth section.

 

[JamesHBCA]

Ok, so I was able to disconnect and reroute the hose so that it laid flat on the floor. I could not shorten it because it would be to short on the next clamping section so I laid it in an S patern. Seems to be draining much better. The twin engine 14.5 boat sure is cramped back there. I had to get a wirey buddy to help!

 

[Waterluvr]

Ok, so I was able to disconnect and reroute the hose so that it laid flat on the floor. I could not shorten it because it would be to short on the next clamping section so I laid it in an S patern. Seems to be draining much better. The twin engine 14.5 boat sure is cramped back there. I had to get a wirey buddy to help!

James, my left side is so sore from just doing the carbs last week and teetering over the edge of the boat on a stepladder the next time I have to do anything other than spark plugs I'm pulling the engine cover off. Pretty sure if I ever have to change the bilge pump it would just be easier on me to pull the motor to make some room to work

 

[wpaul281]

I have the same boat.. I had to use a garden hose to back flush that line and check valve to remove alot of crap, after that it has been flowing great...