OMC SSV-177 Glastron 1979

[boatsondemand]

Hello All,
Has anyone seen this boat before. If yes does anyone here have the wiring diagram and also know what the HP is for this engine.

I have two cooling hoses missing on the bottom of the exhaust manifolds.

 

[boatsondemand]

Wow, i guess there is no one left with this age of boat.

 

[boatsondemand]

Anyone out there know anything about this boat?

 

[briangcc]

It's an old OMC (OMG as in Oh My Gosh) drive - no longer in production as OMC went out of business a while ago. Best bet for wiring is going to be your OMC service manual for the motor. Anything else, unless you stumble across an original owner, you're more than likely poking your head under the dash and tracing wires. Given the age, I'd wager a well intending previous owner probably said to his buddy "here, hold my beer I got this" while rewiring something.

Going off the age, I'm going to take a stab that its an old FORD V8 motor which someone will be by to correct me. **I can't see the entire distributor but I'm guessing by what I can see that it's got 8 plugs and an external coil.

You might find the missing cooling hoses from Sierra or another parts manufacturer.

 

[Scott Danforth]

1978-1981 OMC stringer 800 with a GM 305 or 350 with newer 1986 or later valve covers and heads

OMC (Obsolete Marine Company) never made a coupler for a stringer drive for a one-piece RMS engine (1986 and later) so either the motor doesnt run because it doesnt have a coupler, or someone cobbled something together.

@boatsondemand if you are looking to buy this and have not. dont and run away

if you already bought this - see if you can give it back to the person you got it from.

 

[boatsondemand]

1978-1981 OMC stringer 800 with a GM 305 or 350 with newer 1986 or later valve covers and heads

OMC (Obsolete Marine Company) never made a coupler for a stringer drive for a one-piece RMS engine (1986 and later) so either the motor doesnt run because it doesnt have a coupler, or someone cobbled something together.

@boatsondemand if you are looking to buy this and have not. dont and run away

if you already bought this - see if you can give it back to the person you got it from.

Aw, give it back. I can find parts for it no problem. Is there anything else why you say give it back? If you mean repairing it myself is not a problem.
I seen the seal problems from the boot. Is anything else you guys have on something i am missing?

 

[racerone]

Perhaps you are missing the fact that this boat might be a rotten mess ( transom and stringers ) under the floor.----And perhaps with a previous attempt at repairs.-----Look this boat over carefully before you spend any beer tokens on it.

 

[boatsondemand]

Perhaps you are missing the fact that this boat might be a rotten mess ( transom and stringers ) under the floor.----And perhaps with a previous attempt at repairs.-----Look this boat over carefully before you spend any beer tokens on it.

Hello,
Thanks for the response. The boat is in really good shape stringers and transom are in good shape as well. The both is worth saving. It has a starter problem. The title motor will not move the outdrive relays click, trim, motor doesn't work or doesn't move the motor yet. Do guys know any tricks to remove the starter on this model. The solenoid works but will not make the starter to turn. Shorted a bar from the brushes to the battery lead and still no operation of the starter.

 

[Scott Danforth]

having owned an OMC when you could get parts (most are no longer available). you couldnt pay me to take one. much less a 1978-1981 hydro-mechanical shift even if the boat was in pristine shape.

99.999995% chance the foam, stringers and transom are water logged

you have a frankenstein motor - read the 2nd line of post #5

most likely why you can not get the motor to turn over

if the vertical 3-piece driveshaft has not been replaced yet, that will fail (they all do).

the tilt motor is a common failure. followed by leaking clutch housings

ball gears are a common wear item. however the intermediate shaft and the upper input shaft are getting hard to come by

if you want to keep it.

you will need about $3k for hull repair/restoration, about $2500 for drive related repairs and about $500-$800 for the motor (assuming the long block is intact)

so yeah..... give it back.

 

[racerone]

It will be hard to convince the gentleman , he is sure all is in good shape.-----Starter won't work.----Tilt won't work.----All an easy fix.

 

[Scott Danforth]

looking at the pics, the motor needs to come out to access the starter

 

[boatsondemand]

It will be hard to convince the gentleman , he is sure all is in good shape.-----Starter won't work.----Tilt won't work.----All an easy fix.

Yeah, all are a easy fix, However wonderful your comments are you did not answer my question. Please feel free to send all the love you can however with your comments should include the answer to getting the starter out.

 

[Scott Danforth]

Yeah, all are a easy fix, However wonderful your comments are you did not answer my question. Please feel free to send all the love you can however with your comments should include the answer to getting the starter out.

You should read post 11

 

[boatsondemand]

You should read post 11

So you have never removed one while the engine was in the boat on this model? I can reach the bolts by hand. You did make a comment about the three piece drive shaft on the OMC model. Doesn't the mercruiser 898 1979 have the same design three piece drive shaft as well? Does that have failure problems all the same?

 

[Scott Danforth]

No, the OMC stringer drive is its own design. The Mercruiser MC drive is a much better product and the are nothing alike other than both have propellers

 

[boatsondemand]

Well, then if i must remove the engine i will, Can the intermediate housing come out with the engine at the same time on this unit?

 

[76SeaRay]

If you decide to change to a Merc Alpha drive, I can give you info on how my change over went. My boat had a 1976 OMC Ford 351 Windsor and only the upper unit of the outdrive (the portion right behind the engine). The boat "looked" pretty solid at the outset (pic in profile) but I was also in the mindset that it could take a lot of work and money to end up with a really nice boat, reliable and solid. I made the decision to convert to a scratch built 1996 GM 5.7L Vortec with an Alpha Gen One drive given the advice from others here, the inherent problems of the drive boot, lack of parts and transom rot near the boot. As it turned out I had to do the transom and all the stringers to the bow. I think I would add a little bit to the cost estimates from Scott just given current inflation pricing. Right now I think I am in the $10k to $12k range but I am doing a full restoration including a full engine and outdrive rebuild.

 

[boatsondemand]

If you decide to change to a Merc Alpha drive, I can give you info on how my change over went. My boat had a 1976 OMC Ford 351 Windsor and only the upper unit of the outdrive (the portion right behind the engine). The boat "looked" pretty solid at the outset (pic in profile) but I was also in the mindset that it could take a lot of work and money to end up with a really nice boat, reliable and solid. I made the decision to convert to a scratch built 1996 GM 5.7L Vortec with an Alpha Gen One drive given the advice from others here, the inherent problems of the drive boot, lack of parts and transom rot near the boot. As it turned out I had to do the transom and all the stringers to the bow. I think I would add a little bit to the cost estimates from Scott just given current inflation pricing. Right now I think I am in the $10k to $12k range but I am doing a full restoration including a full engine and outdrive rebuild

Does, this cost include you doing all the work yourself? Did you pay to have the work done? How did you get the true-steer cable off. I am having a hell of a time getting the what looks like a bolt and not a screw to get out to remove the shaft. I am ready to take the motor out a repair the starter, tilt motor and trim motor.

 

[76SeaRay]

The OMC steering cable was already loose when I got the boat. Do you have a picture of the bolt area? Maybe I can look on my old parts to get an idea.

My cost is with me doing all the work except that I am having any media blasting and powder coating done by others. I did have to buy a lot of parts that did not come with the boat which is what you face in switching from OMC to Merc. A lot of my cost is buying new parts to replace old bad ones for the Alpha drive plus the cost of marine plywood and lots of fiberglass cloth and resin. I did have a guy glass in my new two layer marine plywood transom and fill the old OMC hole in the hull.

The other cost is in the engine build with the machine shop doing that machining and I bought new pistons and rings, new oil pump, new oil pan, roller marine cam, roller lifters, roller tip rockers, and new pushrods. I went with new HGE dry joint exhaust manifolds and risers and the Monitor Products closed cooling system.

So, mine is a full restoration though. I even disassembled the windows and powder coated the frames as well as removed the rub rail and had it powder coated. I still need to buy new insert for the rub rail.

 

[boatsondemand]

The OMC steering cable was already loose when I got the boat. Do you have a picture of the bolt area? Maybe I can look on my old parts to get an idea.

My cost is with me doing all the work except that I am having any media blasting and powder coating done by others. I did have to buy a lot of parts that did not come with the boat which is what you face in switching from OMC to Merc. A lot of my cost is buying new parts to replace old bad ones for the Alpha drive plus the cost of marine plywood and lots of fiberglass cloth and resin. I did have a guy glass in my new two layer marine plywood transom and fill the old OMC hole in the hull.

The other cost is in the engine build with the machine shop doing that machining and I bought new pistons and rings, new oil pump, new oil pan, roller marine cam, roller lifters, roller tip rockers, and new pushrods. I went with new HGE dry joint exhaust manifolds and risers and the Monitor Products closed cooling system.

So, mine is a full restoration though. I even disassembled the windows and powder coated the frames as well as removed the rub rail and had it powder coated. I still need to buy new insert for the rub rail.

Hello, I do have a Merc boat that needs all new stringers and bulkheads and the engine is a Merc 898 1979 Carvelle 305. I will take some pictures today. Thank you for being helpful.