Where do i find information on draining water fro a inboard boat engine?

Question

Where do i find information on draining water fro a inboard boat engine?

Answer 1

I do believe more information is needed here to answer your question... but I will try.

What water do you want to drain?  Do you have an "open" or "enclosed" water cooling system? Did your boat sink? Or, do you live in the north and need to "winterize" your boat?

If you have an "open" water cooling system, there is no water to drain... the system sucks water in from the lake you are boating on, it runs through your engine and blows out (generally in holes just below your exhaust.  If you have an "enclosed system" (similiar to the system on your car - with is mostly common in salt water craft) you will need to drain it from bottom of your radiator... as you would your car...  If you live in the north where boats are generally removed from the water and winterized... most boaters I know, (my self included) drain their enclosed system at the bottom of the radiator, and then simply remove the "freeze plug".  On the other hand - if in fact your boat sank, and was recovered... most (good) Marinas or salvage yards will take care of this automatically.  It is critical that the water is immediately replaced with a special grade oil to prevent rust, oxidation, and damage from being submerged.  and they are best capable of handling this... At my marina, I have watched them do this, and they have a high pressure machine that pumps oil into the engine and forces the water out in such a way that prevents air from getting inside.  this, not only helps prevent oxidation, it insures they indeed get all the water out... they use these devices on outboards that have been submerged as well.