|Topic Review (Newest First)|
|03-25-2008 02:36 AM|
If your boom extends well into the cockpit (I think the 31's does?) I would suspend a piece of 2 or 2 1/2" steel pipe below the boom running from the front of the companionway hatch to the back of the boom. Secure it with several loops of strong line at the front and back. Support the boom with halyards where the lines holding the pipe are. I would lift the engine with a good come-along, or better yet, a chain hoist. You will want to be guiding the engine as you lift it and being able to raise and lower it as needed will be a big help, especially when installing the new one. If you attach the come-along or chain hoist to the pipe with a short section of chain once you raise the engine up high enough you will be able to slide the engine out the companionway (push the chain on the pipe) Then swing the boom over to the dock to unhook. You should be able to raise the boom with the halyards if you need additional height to clear the lifelines, but secure the engine well before you tilt the boom. I would hook two halyards at the aft end of the pipe and one at the forward end. Should be a piece of cake, just like all boat projects .
I kind of like Erps idea for testing the whole rig prior to the actual job
Good luck, John
|03-25-2008 12:57 AM|
|03-24-2008 11:39 PM|
If you are going to lift it out with the boom, you may want to attach a spare halyard around the boom at the lift point - this can avoid putting a lot of bending moment in the boom when the engine is hanging, and you can use it to get more height if you need it.
Definitely strip the engine, not just for weight but for clearance - a swinging engine can do a lot of damage to your undoubtedly beautifully finished companionway!
|03-24-2008 09:24 PM|
|sailingdog||I would second removing any thing you can from the engine... it will make it lighter and smaller in size, and that will make removing it easier and safer.|
|03-24-2008 08:23 PM|
I would remove everything removable. Transmission, flywheel, intake and exhaust manifolds and be sure to drain as much oil as you can. Dont forget the cylinder head.
Go to a carpet store and get some removed carpet from the trash can and pad every thing.
The hardest part will be getting it on the dock and of course-----
installing the new one!!!
|03-24-2008 07:50 PM|
As a data point, I pulled out the Petter 7HP diesel out of my Catalina 27 using the boom and a block and tackle I rigged from the boom vang and something else that I had lying around.
I'm guessing the engine weighed about 250 lbs (huge flywheel!)
I transferred it to a skid in the cockpit, shifted the block and tackle aft, and swung the engine onto a furniture dolly, which I rolled up the dock.
It came out pretty easily. Of course, you don't want to drop it, as it could seriously hurt you and your boat.
I replaced the engine with a Universal M2-12 (175lbs) without much difficulty.
You could reduce the weight significantly by pulling the transmission and accessories before you lift it.
I would certainly, carefully do this again if I needed to.
I would expect that others will chime in shortly with other, possibly better advice.
|03-24-2008 06:57 PM|
|dhornsey||The boat is a Pacific Seacraft Mariah 31. The engine is a Sabb 18hp. The engine only has to come forward a little to be in the correct position to be hoisted straight up through the companionway.|
|03-24-2008 06:52 PM|
|djodenda||It would help if you could describe the boat and engine. We could give you more specific information...|
|03-24-2008 06:48 PM|
I have seen it done where they made a rail out of 2 long 4 x 4's. Both ends had legs putting the 4 x 4 near the top of the companion way. The end of the rails had 2 x 4 's screwed into them so it made a track. The rail/track led outside to the cockpit. They used a 2 x 4 with a chain bolted to it and slid the 2 x 4 on the top of that rail with the engine attached to it.
It really depends on the boat and the room you have.
|03-24-2008 06:08 PM|
|FarCry||Don't drop it on your toes!!!! Find some strong limber friends to do the heavy lifting.|
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