crack in lower unit help PIC

[defcondaze]

hi, i just bought a boat, 17 ft silverline<br />65 hp 72es johnson engine (first boat)<br />wondering if a crack in the lower unit <br />about in the middile of where the prophousing ends(prop side) goes about an inch half back and then splits up up and down for 2 inch ,,, ?<br /><br />......./---<br />....../ <br />.X---|--| <crack X is the prop<br />......\<br />.......\______

 

[defcondaze]

Re: crack in lower unit help PIC

would this be a problem ?

 

[Goodoleboy]

Re: crack in lower unit help PIC

The lower unit will have to replaced. You can find them on Ebay most any time.<br /><br />Good luck!

 

[Solittle]

Re: crack in lower unit help PIC

If you are not getting water into the gearcase you could gamble & just run it. Could you post a picture?

 

[defcondaze]

Re: crack in lower unit help PIC

 

[djzyla1980]

Re: crack in lower unit help PIC

It looks as though it stops before it actually gets into the lower inut. Almost as if the only thing it would leak is exhaust. If the lower unit isn't leakin....slap some JB weld on it and go with it til the LU starts leakin.... or you find a decent used one.

 

[flexon_guy]

Re: crack in lower unit help PIC

Where is that oil comming from? Check your prop seal and replace if necessary. Also change gear lube and check for water in gearcase. . Remove prop and see where that crack goes. Is this the cause of the gear lube leaking? Then check to see if the prop seal is leaking. If the prop seal is the culpret then JB weld and a new prop seal is the solution.

 

[djzyla1980]

Re: crack in lower unit help PIC

Looked to me that the oil is just exhuast.... the way it rounds the prop like it does. Mine has it also on a 71 115. Maybe I'm wrong and have a bigger problem on my hands

 

[flexon_guy]

Re: crack in lower unit help PIC

Is that a drop of oil about 3/4 of an inch in on the bottem of the skeg?

 

[R.Johnson]

Re: crack in lower unit help PIC

That's an interesting corrosion pattern on the outside of the case. It's almost like the out-line of the bearing carrier inside the case. Where that crack is located, it look's like you could lose some support to the bearing carrier. In fact! it look's like you can see the support ring of the carrier through the crack. I'm not sure what would cause a crack like that in that location. I suppose you might find a crack like that on an engine jacked to high, and running a surfacing prop, but that can't be the case here.

 

[papasage]

Re: crack in lower unit help PIC

that is a eletric shift and needs the ligh weight oil the OMC type C 25.3 oz. preasure test and see if it will leak . if not run it . a newer 74 standard shift will work but will need some parts off the power head . i changed a 50 hp .several yea5s ago and worked fine

 

[djzyla1980]

Re: crack in lower unit help PIC

I was wonderin if I could swap out my electric with a standard. No probs yet but good knowin if it comes up...<br /><br />Learn something new everyday.... I'll have to file that away in my small brain. Hopefully I won't learn anything new to earase something I might need...

 

[R.Johnson]

Re: crack in lower unit help PIC

If you went to a standard shift, you would need an upper that would allow the shift rod to pass through, plus the linkage on the power head. Stay with what you have. There seem's to be a lot of confusion between the electro-matic, and hydro-electric shift, In no way are they alike, including the gear lube that can be used.

 

[dcolpitts]

Re: crack in lower unit help PIC

I once had left my outboard stored in the up postion over the winter up north, that area in the lower froze then expanded and cracked. This might explain that type of crack. All I did was JB weld it and never had any problems

 

[jameswilson95]

Re: crack in lower unit help PIC

Considering how much money a new motor costs, a couple of hundred bucks to replace the casing is worth the money in my mind. Then again, a couple of good oars/paddles and two strong arms will still get you across the lake and back to shore. Hopefully you wont be alone.

 

[Joe Reeves]

Re: crack in lower unit help PIC

On the early thru hub exhaust models, the carrier assy housing had its casting running from the prop shaft seal area to the bolt retaining area (6" or 7" or so). That type lower unit, using that carrier housing was famous for having salt corrosion build up between the carrier and the lower unit. The result was what you see there.

 

[defcondaze]

Re: crack in lower unit help PIC

i got to take the boat out today and it engages in both gears fine .. doesnt seem to be making any loud noises . we were only out for like 30 min to test her out