Boat launch trouble

[Sosrbny]

That and the pop pit valve are my next steps

[fitz73222]

Had to halt my scupper problem. Having some motor issues. 90 Yamaha c series running ok at idle overheating at high rpms. Changed water pump and thermostat. Suspect pcv or salt deposits. Boat sat for a year and a half. Any ideas

Assuming this is not a sticking poppet valve; which controls the water flow through the block and cylinder head that can cause a high speed overheat condition, the correct way to do this would be to pull the cylinder head and physically remove any obstructions or blockage. Also replace the poppet valve, grommet and spring in the thermostat cover. This is a very easy job to do and you will know without a doubt that the engine is clean and doesn't have any other issues like scored cylinder walls or excessive carbon.

[Sosrbny]

Thanks I'm going to do the poppit valve first then give it a try. If not ill remove the heads and clean the water jackets. Thanks for the reply. In regard to my scupper issue there are a some uploaded pics

http://www.classicaquasport.com/gallery ... 59&cat=500

[gran398]

Thanks for the pics

These holes straight to the bilge are the work of an imbecile. How to sink a boat at the dock in a heavy thunderstorm...this is it.

Please don't run her/leave her in the water in any kind of sea/weather until this is remedied. A boat can't sink on a trailer.

Not as bad as it could be...just a little glass. No biggee...but get'r done.

[wingtime]

Is there wooden deck core exposed by those holes?  or is there no wood in those areas?   The fix is simple.  fill in the holes.  The easy way is with some wood dowel and thickened epoxy.  Then route a proper bilge hose and thru hull fitting out the upper starboard side of the hull.

[Sosrbny]

? I am unsure here. Is a pump supposed to be below deck ? If so how does it attach. If not where does the bilgr pump go.  I guess I don't know what the original design was. I am researching. Is that transom well supposed to be watertight? One of the openings looks like it was routed with a fitting to lead somewhere. I'll look at it later today. Thanks for all the support

[wingtime]

Yes the supper well should be water tight. No water should be able to get into the bilge  from the deck or anywhere else for that matter. ( some will find its way in though)  The bilge pump is only supposed to remove water that is not supposed to be there. Typically they are screwed down to a piece of wood that is glassed  into the bottom of the hull. I don't think early boats came with bilge pumps from the factory so you may not have the glassed in wood in your hull (I don't know what year you boat is). The pump discharge hose is plumbed to a thru hull fitting that is located high up on the side of the hull near the stern of the boat. They are typically wired with a float switch that allows the pump to come on automatically and a toggle switch that allows you to turn it on.

Here is a pic of a typical install in a power boat:



And a link to a BOAT U.S. article...  it shows a sailboat but you get the idea (you don't need the dual pump setup like they show for your boat)

http://www.boatus.com/boattech/casey/installing-bilge-pump.asp

[Sosrbny]

Thanks. I'm sure my deck is not high enough above the waterline to go through my hull below the deck.  So at one point my bilge hose has to come through my deck, correct? Perhaps I could plumb a watertight connection. Through my deck and then out a thru hull or over the transom. Is my theory sound? Again thanks for the help

[Georgie]

Is there any way you can get us an overall picture of your cockpit facing aft?

Missing a bit too much info to give any sound advice/recommendations.  

[Sosrbny]

Will do
http://www.classicaquasport.com/gallery ... 61&cat=500

[RickK]

When I bought my 170 in '88 it had a pie plate access in the aft, right in front of the trough and when I opened it there was about a 12x12 inch bilge, with no pump. Not sure why there was an access hole at all.
In the old days these boats had no access to the bilge and no way for water to get into the bilge from the topside (and hopefully the bottom side).  There was a bilge drain at the aft keel and 2 scuppers for the deck to drain through. They had a trough for fuel, wiring, shift/throttle and harness that ran from the console to the transom and at the transom it became the place where the deck drains/scuppers were.
On the older boats the scupper holes were the width of the old style motors and if you put a newer motor on the transom the bracket blocked the scupper holes (speaking from experience) which made them almost useless.

[gran398]

Will do
http://www.classicaquasport.com/gallery ... 61&cat=500

[Sosrbny]

I'm defietly getting some water in my bilge I'm going to try and button up the holes and dry it out. I think I'm going to leave a pump down ther regardless . I'm going to eliminate the deck holes to that area except my bilge pump outlet and electric which I'll make watertight.

[RickK]

Looks like the holes are the same size of the drain plug - 1 inch?  Maybe try a drain plug/cork in each?

[Skoot]

Thanks for the pics  These holes straight to the bilge are the work of an imbecile. How to sink a boat at the dock in a heavy thunderstorm...this is it. Please don't run her/leave her in the water in any kind of sea/weather until this is remedied. A boat can't sink on a trailer. Not as bad as it could be...just a little glass. No biggee...but get'r done.

PLEASE, FIX ALL THOSE HOLES IMMEDIATLY!  dont try to plug them, put duck tape, etc etc etc, fill them with fiberglass before you head out again.  as gran said this is bassically  a sinking ship waiting happen.  Those holes are not suppose to be there, they lead directly into the bildge and will fill your boat with water in no time, Bildge pump or not.

You can always re-run the bildge  hose out the port side (where it's suppose to be)

PLEASE PATCH THEM NOW!