Reviving something that should probably die.

mogfisher

Petty Officer 1st Class
Joined
Jul 13, 2009
Messages
237
Instead of starting a bunch of threads about what is turning out to be a project, I figured I'd just do it all here. I was given a boat with a 305 mercruiser and apha 1 (I believe) outdrive. The boat is a mid 80s century cuddy and it is rotten to the core (pun intended). The engine had water in it and has a bad rod knock (or wildebeest in crank case, not certain yet). Some of you probably watched the video. This boat came at a good time because I've been looking for a motor to rebuild. I havent done one in a while and I've not done a push rod V8 which I've wanted to do. Most of my other work has been OHC european imports. I've also rebuilt 2 stroke outboard powerheads. This will be my first ever sterdrive project and it should be fun.

I think its certain that the boat should probably be scrapped for parts and the engine as well but I've always found joy in restoration of the unrestorable. I brought back an old glass tracker bass boat from the dead and fish it regularly now. I currently also have a 20' seacraft that I've been working on for a few years.

I will start a thread for the hull somewhere else when I get to it but I'll be posting about the motor/outdrive here. I'll have some questions I'm sure. Step one is to remove the engine so I can truthfully assess it's viability. I'll be taking it to a buddy's house tomorrow who has a backhoe that we can lift it out with. This means that today I will disconnect it from the boat (except the bolts). I started by removing the outdrive and there was another surprise! (not totally) The bellows was full of sludge. Water/oil mix. Smelled like gear oil but what came out of the drain in the lower unit was just oil so....IDK. I've attached a pic for reference. I'll pull the upper vent plug and see what is in there. I need to make a stand for this pig. It's heavy and awkward.
 

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Rick Stephens

Admiral
Joined
Aug 13, 2013
Messages
6,118
Oil in the bellows isn't a surprise after all these years. You are gonna pull the drive, drain it and pressure test it anyway.

Be interested in what you find in your lower end of the motor. Good luck!

Rick
 

mogfisher

Petty Officer 1st Class
Joined
Jul 13, 2009
Messages
237
So I just drained the lower unit. Shockingly it was just dirty oil! Not a drop of water and no milkshake.

I also disconnected everything from the motor so we can yank it tomorrow. Not surprisingly the flappers in the exhaust were gone (there were melted remnants). There was also NO exhaust bellows. The exhaust was just going out of the housing and not down to the prop.

Rick, how does oil get into the bellows? Does it seep by the drive shaft seal? The water I figure got in there when the boat filled up but the gear oil...idk.
 

NHGuy

Captain
Joined
May 21, 2009
Messages
3,631
Might be a bit of gear oil, water, dirt and u joint grease making a veritable goo cocktail.
 

wahlejim

Master Chief Petty Officer
Joined
Jul 23, 2015
Messages
884
There are a couple of different ways that it can get in. The seal on the upper unit of the outdrive could be shot (I would plan on changing it anyway), crack in the bellows would allow water in, grease flying off of the ujoint, grease coming out of the gimbal bearing.

At the very least for the outdrive, new impeller kit, new seals, if there is play in the u-joints they heed to be replaced

Plan on a new set of bellows, shift cable, and gimbal bearing, as well as trim sensor and limit switch, oh... and all gaskets, nylon washers, and o-rings that go with all of this.... it is going to be fun!!!
 

Rick Stephens

Admiral
Joined
Aug 13, 2013
Messages
6,118
First time I had 'goo' in the bellows I thought it was oil. Was all grease n water. Mixes all purty like.
 
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