Hey guys.. first post here but long time reader. This place definitely keeps me motivated to take on new boat projects because of the wealth of information. Having said that...
I just got a new boat here and I'm not even sure what kind it is yet. I'm having a hard time finding the exact model and until I get the title, I won't be sure. I believe the manuf. date is 1978, give or take a year. Anyways, it has the Mercruiser 470 170hp with what I believe is the Merc One outdrive... I'm not sure on that outdrive part, but I believe going by that date and what I've read on here that it was the first outdrive they made? The floor, stringers, and ribs were all rotten in the boat so all of that is coming out. The transom is solid as far as I can tell and I will know for sure when everything is out. The motor must come out because the front motor mount has failed and is about 3" lower from normal position. This is putting the outdrive shaft in a bind where it enters the the motor because of the motor sitting lower in the front throwing the alignment WAY out.
When I first got the boat, I didn't realize that the motor was tilting forward and I proceeded to fire up the motor to make sure this thing would even run. After some tinkering, I got it to fire up and it actually ran well for having sat up for 10years. It seemed that it was excessively hard on the starter to turn over, even with two new batteries pushing it, and now I want to think that this was because the drive shaft had the motor in a bind making it hard to turn. Does this sound reasonable? I only ran it in gear for less than a minute but I'm worried about any damage I may have caused. Coupling? I'll check it out, what else should I look for?
And finally, the main question in my post. While I have this motor out and the outdrive apart, what should I go ahead and replace? I am going to order the impeller, change the oils, carb kit, plugs, wires, already cleaned the points. Anything else?
Sorry for the long-winded post... wanted to make sure to mention all of the details! And thanks in advance for any help... this is a project boat and I've never done anything like this before, so I'm needing all the help I can get!
Daniel
I just got a new boat here and I'm not even sure what kind it is yet. I'm having a hard time finding the exact model and until I get the title, I won't be sure. I believe the manuf. date is 1978, give or take a year. Anyways, it has the Mercruiser 470 170hp with what I believe is the Merc One outdrive... I'm not sure on that outdrive part, but I believe going by that date and what I've read on here that it was the first outdrive they made? The floor, stringers, and ribs were all rotten in the boat so all of that is coming out. The transom is solid as far as I can tell and I will know for sure when everything is out. The motor must come out because the front motor mount has failed and is about 3" lower from normal position. This is putting the outdrive shaft in a bind where it enters the the motor because of the motor sitting lower in the front throwing the alignment WAY out.
When I first got the boat, I didn't realize that the motor was tilting forward and I proceeded to fire up the motor to make sure this thing would even run. After some tinkering, I got it to fire up and it actually ran well for having sat up for 10years. It seemed that it was excessively hard on the starter to turn over, even with two new batteries pushing it, and now I want to think that this was because the drive shaft had the motor in a bind making it hard to turn. Does this sound reasonable? I only ran it in gear for less than a minute but I'm worried about any damage I may have caused. Coupling? I'll check it out, what else should I look for?
And finally, the main question in my post. While I have this motor out and the outdrive apart, what should I go ahead and replace? I am going to order the impeller, change the oils, carb kit, plugs, wires, already cleaned the points. Anything else?
Sorry for the long-winded post... wanted to make sure to mention all of the details! And thanks in advance for any help... this is a project boat and I've never done anything like this before, so I'm needing all the help I can get!
Daniel
