Diesel Engine Replacement - SailNet Community
 5Likes
Reply
 
LinkBack Thread Tools
post #1 of 13 Old 04-22-2012 Thread Starter
Junior Member
 
Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Diesel Engine Replacement

I have a 39'9' 1983 Irwin sloop and need to replace the engine. I plan to hoist the engine out of its bay with a portable winch using the boom (engine on a sloop is directly under the end of the boom) with the main halyard linked for additional weight support. The engine weighs 650lbs and the question is will the boom, support lines and mast support that kind of weight. Has anyone had experience lifting an engine using that technique? Advice appreciated.

Lem
lemmystic is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 13 Old 04-23-2012
Senior Member
 
JimsCAL's Avatar
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 2,887
Thanks: 2
Thanked 76 Times in 70 Posts
Rep Power: 9
 
Re: Diesel Engine Replacement

I did it that way a couple of years ago on my previous boat, but the engine was only 250 lbs. If your rig is solid, it should support your heavier engine, but I would still be nervous. You can always rent a portable crane.
JimsCAL is online now  
Quote Quick Reply Share with Facebook
post #3 of 13 Old 04-23-2012 Thread Starter
Junior Member
 
Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Diesel Engine Replacement

Thanks
lemmystic is offline  
Quote Quick Reply Share with Facebook
post #4 of 13 Old 04-23-2012
Over Hill Sailing Club
 
smurphny's Avatar
 
Join Date: Feb 2009
Location: Adirondacks NY
Posts: 3,550
Thanks: 89
Thanked 105 Times in 102 Posts
Rep Power: 7
 
Re: Diesel Engine Replacement

Maybe rig up something other than a topping lift which was not designed to lift that much weight. Use the halyard attached opposite the load point? To take pressure off the mast at the gooseneck, maybe tie back to something. The gooseneck itself should be ok if it's rugged enough.
Faster likes this.

Alberg 35: With a philosophical flourish Cato throws himself upon his sword; I quietly take to the ship.

Last edited by smurphny; 04-23-2012 at 09:01 AM.
smurphny is offline  
Quote Quick Reply Share with Facebook
post #5 of 13 Old 04-23-2012
SeŮor Member
 
PorFin's Avatar
 
Join Date: Sep 2007
Posts: 1,446
Thanks: 8
Thanked 20 Times in 20 Posts
Rep Power: 8
 
Re: Diesel Engine Replacement

Lem,

I'd recommend you think through all the steps before you start -- not suggesting that you haven't.

Once you get the engine clear of the interior of the boat, how are you going to get it over the side? Will the boom (with engine slung under) be able to swing outboard far enough to allow you to drop the block onto the dock or ground?

If you are going to need to hire a crane or lift anyway, it may be easier, cheaper, and less stressful to just use it for the whole job.
jrd22 likes this.
PorFin is offline  
Quote Quick Reply Share with Facebook
post #6 of 13 Old 04-23-2012
Just another Moderator
 
Faster's Avatar
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 16,551
Thanks: 105
Thanked 316 Times in 302 Posts
Rep Power: 10
     
Re: Diesel Engine Replacement

You can drop a lot of weight by disassembling alternator, heat exchanger, starter, manifold, even the cyl head...all sorts of odds and sods prior to lifting it out.. it also makes for a smaller package, easier to manoeuvre out the hatch.
arf145, smurphny and SloopJonB like this.

Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Faster is offline  
Quote Quick Reply Share with Facebook
post #7 of 13 Old 04-23-2012
Over Hill Sailing Club
 
smurphny's Avatar
 
Join Date: Feb 2009
Location: Adirondacks NY
Posts: 3,550
Thanks: 89
Thanked 105 Times in 102 Posts
Rep Power: 7
 
Re: Diesel Engine Replacement

Quote:
Originally Posted by Faster View Post
You can drop a lot of weight by disassembling alternator, heat exchanger, starter, manifold, even the cyl head...all sorts of odds and sods prior to lifting it out.. it also makes for a smaller package, easier to manoeuvre out the hatch.
Yes, maybe even the gear box. My Yanmar 3GM only weighs half the weight of the OP's motor. I wonder what kind?

Alberg 35: With a philosophical flourish Cato throws himself upon his sword; I quietly take to the ship.
smurphny is offline  
Quote Quick Reply Share with Facebook
post #8 of 13 Old 04-23-2012 Thread Starter
Junior Member
 
Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Diesel Engine Replacement

Thanks to all for the feedback. In reply to the last post the engine is a 1983 yanmar 3Qm30 Lem
lemmystic is offline  
Quote Quick Reply Share with Facebook
post #9 of 13 Old 04-23-2012
Senior Member
 
JimsCAL's Avatar
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 2,887
Thanks: 2
Thanked 76 Times in 70 Posts
Rep Power: 9
 
Re: Diesel Engine Replacement

Another item to check is will the block and tackle or chain fall be long enough to lower the engine all the way to ground after you get it up and out the then swung over the side. It's a long way down and the typical rig isn't long enough. Found that out the hard way.
JimsCAL is online now  
Quote Quick Reply Share with Facebook
post #10 of 13 Old 04-24-2012 Thread Starter
Junior Member
 
Join Date: Apr 2012
Posts: 5
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Diesel Engine Replacement

On reinstalling my yanmar engine, any tips or guidance on aligning the gearbox and the shaft? Thanks Lem
lemmystic is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
462 Engine Replacement jb1842 Morgan 7 09-07-2010 02:13 PM
Diesel Engine Replacement (Yanmar 2QM20) - Recommendations westannapoliscrew Diesel 2 04-07-2010 04:43 PM
Diesel Engine Replacement - Yanmar 2QM20 westannapoliscrew Diesel 0 03-30-2010 04:45 AM
Engine Replacement Helimech Gear & Maintenance 3 12-21-2005 11:10 AM
Engine Replacement Dan Dickison Gear and Maintenance Articles 0 10-27-2001 08:00 PM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome