1972 Sea Ray

[Celtichawk]

Re: 1972 Sea Ray

I will post photos in hour or so need to get out enjoy sunny California with my kids!!!

Where are those diagrams located? I wonder if I can order new housin or will I need to source the housing used from a boat being parted out?

Another question for you, since yours is a 5.7 GM do you use two starting batteries to fire it up or just one and one battery for accessories when not running motor?

I have a used battery it holds charge with 810 cranking amps I used on my 17' 4cyl Mercruiser and no issues but trying to use it on my GM350 seems too slow of cranking and not enough to fire it up

 

[Nivekt]

Re: 1972 Sea Ray

I suggest installing flappers as close to the exhaust housing as possible. Oh and a correction to my earlier posts. The correct term for that part is adapter housing, not exhaust housing.

 

[Celtichawk]

Re: 1972 Sea Ray

Thanks I will look into this later and order some. Highly suggested maybe also but seeing how they did not come with any wonder if necessary?

 

[Celtichawk]

Re: 1972 Sea Ray

So do you use two starting batteries to crank your engine over or only one and then a accessory battery for other things when not running motor?

 

[Nivekt]

Re: 1972 Sea Ray

Thanks I will look into this later and order some. Highly suggested maybe also but seeing how they did not come with any wonder if necessary?

Your boat has been hobbled together over the years. From what I see with the '72's they originally had through hull exhausts that had flappers on the outside of the transom where the exhaust came out. It could be that some previous owner of your boat took out the through hull, patched up the holes and made their own custom routing to the adapter housing. Who knows. I would not want to run a boat that did not have exhaust flappers.

I only use one battery but two is probably a better idea. One cranking battery and one deep cycle marine battery for accessories. Im never out on the lake long enough to need two batteries.

 

[Celtichawk]

Re: 1972 Sea Ray

Thanks for your help and yea more then likely this boat does not have the original motor in it because it does not have transom exhaust holes. Which means yes it was a custom work around to make things fit. I will again look I to installing some flappers close to the housing just to be safe.

As for the battery it just might be the battery I'm using is old and it's not cranking motor string enough to fire. Unless I have more problems and when they rebuilt motor something wasn't assembled correctly. Hopefully that's not the case and a new battery will crank her over easy.

 

[smokeonthewater]

Re: 1972 Sea Ray

one battery to start the engine... I have one starting battery for 2 5.7L engines and a genny... Additional batts are for lights, radio,etc when anchored

 

[smokeonthewater]

Re: 1972 Sea Ray

your starter COULD be weak also

 

[Celtichawk]

Re: 1972 Sea Ray

your starter COULD be weak also

Anyway to test the starter before I just go and replace it?

 

[Celtichawk]

Re: 1972 Sea Ray

Hey so I think what I need is actually called shutter? Not flapper? With that being said anyone know a place I can buy them, would have to be something internal into the existing 4" wet hose or 3" wet hose or 2-3/8" wet hose whichever but since mine runs from riser to two elbows and down almost 90 degrees from first elbow I would think water would reach that high? In any case if I wanted to buy shutters where could I get ones to go in my setup?

 

[Celtichawk]

Re: 1972 Sea Ray



The photo shoes the angles at which my exhaust runs so would it really get to the riser after the large hose and down into my manifold?

 

[Celtichawk]

Re: 1972 Sea Ray

Hope maybe this helps to identify what my exhaust housing came from. I will try to pull the serial numbers from stern drive tomorrow.



This photo is exhaust outlet from stern drive and hard to really see but no signs of shutter/flapper



These above photos are showing the port side where exhaust connects into exhaust housing and again no sign of shutter/flapper or any place it could install to. I know it is rough looking and will look into a replacement soon.

 

[Nivekt]

Re: 1972 Sea Ray

It does not appear as though your adapter housing is designed for shutters/flappers so you will have to work something in line. I've never actually looked for a universal in-line exhaust shutter/flapper so you'll have to do some google searching I think. If you find one, I would put it in the section of hose that runs vertical just before it ties into the adapter housing. Seems to be the best place for it.

As for your battery, when was it made? There should be a date sticker or stamp on it somewhere. I would run it on a charger overnight and see if that brings it back. If not, time for a new one. You could also run it down to your local auto parts store and have them test it to be sure.

*Edit* Also, If you are able to convert to the newer style adapter housing it will have the shutters built in. I dont know if it will bolt up to your specific intermediate housing though.

 

[Celtichawk]

Re: 1972 Sea Ray

Yea I was going to ask should I update it to a newer housing? Could someone shed some light on this and provide me some information to what type of housing I could use on my system? I'm in need of one anyhow so I might as well just get er done!

 

[Celtichawk]

Re: 1972 Sea Ray

Previous owner said he never had issues with water getting back into engine via exhaust hose so for now I will get it running and dump it in the water and see how things go. I could very well take it to a lake first and trial it before I take it back into ocean!

 

[Nivekt]

Re: 1972 Sea Ray

What is most odd to me is that for all the exploded parts diagrams I can find for your model year everything shows through hull exhaust with that port on the adapter housing plugged off. Very strange for it to even be there if it was never meant to be used.

What is the casting number of your engine block? It is on the aft-top of the block. So long as your block will accept the later adapter housings and your intermediate will bolt up to the later adapter housings I would say go for it. The later exhaust housings have the rear engine mounts built into them so I dont know if you would have to reposition the mounting blocks in the bilge. If you go with the later adapter housing the exhaust ports are different from your current one so you may end up having to reroute your exhaust pipes after already having put all this work into it. Were in uncharted waters here....

 

[Nivekt]

Re: 1972 Sea Ray

Maybe Boomyal will chime in with his setup. He has an electric stringer intermediate mated to a newer hydro-mech drive. We need to know what adapter housing he is using and what his exhaust flapper setup is.

 

[Celtichawk]

Re: 1972 Sea Ray

Thanks for all your info Nivekt, Really do appreciate your chiming in all this much so far! I hope I can get to the bottom of this before I assemble and end up having to tear down and remove engine just to upgrade not to mention all the money I have spent so far replacing what I have then to find out I will change the whole setup ((( Blah!

 

[Celtichawk]

Re: 1972 Sea Ray

I also wonder what I will cost to just run exhaust out to transom and be done with it. Might save me all that much a headache! I will ask around if I can..........

 

[Celtichawk]

Re: 1972 Sea Ray

Oh and I ordered my parts for the elbows from South Carolina a place called ABCMOTORSONLINE not sure if you heard of them or not?

ABC Motors and Marine