Engine replacement question - SailNet Community
 1Likes
  • 1 Post By smurphny
 
LinkBack Thread Tools
post #1 of 7 Old 12-26-2011 Thread Starter
Junior Member
 
Join Date: Dec 2011
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Engine replacement question

I've got a 30hp Atomic-4 in a Triton that I want to swap for a diesel. To me, 30hp seems like allot for this boat. Granted, it's a gas engine that doesn't have the torque of a diesel, and this has me wondering. Does anyone know what the "best" (make hull speed with least horsepower) diesel is for this boat?

I've seen one Triton that was modified with an outboard well through the lazarette (yikes!) where an 18hp Tohatsu was in use. I've no interest in cutting holes in that fine stern, but thinking maybe a 15hp diesel would be OK if an 18hp outboard worked. Anyone have any experience with this? Thanks.
paulafloat is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 7 Old 12-26-2011
Senior Member
 
Lake Superior Sailor's Avatar
 
Join Date: Aug 2011
Location: Eagle River Wi.
Posts: 959
Thanks: 0
Thanked 8 Times in 8 Posts
Rep Power: 4
 
My Cal 28 had an A-4 with 2-1 walters reduction V-drive I replaced it with Yanmar YSM 8 which puts out 7 hp. pushes at hull speed 6-7 knots, moves good in a gale and I am very happy with mileage -1 liter per hour --Cal weighs 6000 lbs. 4.5 draft--Dale

Reluctant Lady
Cal 28, 1967
Lake Superior
Where God got it done!
Lake Superior Sailor is offline  
Quote Quick Reply Share with Facebook
post #3 of 7 Old 12-27-2011
Just another Moderator
 
Faster's Avatar
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 16,522
Thanks: 104
Thanked 309 Times in 299 Posts
Rep Power: 10
     
I would think pretty well any two cyl diesel would work for you.. You may find the universals are a more direct bolt-in than some of the other makes, though Beta probably can set you up nicely too.

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 online now  
Quote Quick Reply Share with Facebook
post #4 of 7 Old 12-27-2011
Tartan 27' owner
 
CalebD's Avatar
 
Join Date: Jan 2008
Location: NYC
Posts: 4,739
Thanks: 4
Thanked 107 Times in 99 Posts
Rep Power: 8
 
Beta makes some so-called 'drop in' replacements for the A4: 16 a4 Beta Marine US Ltd. Distributors for Kubota based marine diesel engines and generators for sailboats, yachts and trawler boats.
They have models ranging from 14 - 28 HP as A4 replacements. Your choice of propeller might influence which HP engine you want/need.
If your A4 is not in terrible condition I'd suggest you try to sell it here: For Sale - Engines and Engine Parts - Moyer Marine Atomic 4 Community - Home of the Afourians

"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen

Everybody has one:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
CalebD is online now  
Quote Quick Reply Share with Facebook
post #5 of 7 Old 12-27-2011 Thread Starter
Junior Member
 
Join Date: Dec 2011
Posts: 6
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Thanks for the responses. The 7hp on the Cal sounds great. I recognize that the stated 30hp of the A4 isn't quite right but it's still allot of engine for that boat, and it certainly is large. I talked to Stanley at Beta this morning, was curious about their engines. I was interested to hear that the Beta is a marine version Kubota. My impression was that 'Phasor' was their marine diesel. Anyway, at about 7k USD for the 14hp, I'm going to start looking at the reman and used engines first. And my A4 is recently rebuilt and in excellent shape so I may take advantage of those links, thanks. Nothing wrong with the engine, just my own thing about having a gasoline engine three feet away from where I'm cooking.
paulafloat is offline  
Quote Quick Reply Share with Facebook
post #6 of 7 Old 12-28-2011
Over Hill Sailing Club
 
smurphny's Avatar
 
Join Date: Feb 2009
Location: Adirondacks NY
Posts: 3,328
Thanks: 78
Thanked 94 Times in 91 Posts
Rep Power: 7
 
I have a Yanmar 3GM30 which is a good engine, a replacement of the original Atomic gasser, but would seriously consider the Kubota conversion as mentioned here if I had to replace it. I have had Kubota engines in a few pieces of excavation machinery that took/take more abuse than a marine diesel would take in 100 years. They make as close to an "indestructible" and dependable motor as can be imagined.
CalebD likes this.

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

Last edited by smurphny; 12-28-2011 at 12:33 PM.
smurphny is online now  
Quote Quick Reply Share with Facebook
post #7 of 7 Old 12-28-2011
Tartan 27' owner
 
CalebD's Avatar
 
Join Date: Jan 2008
Location: NYC
Posts: 4,739
Thanks: 4
Thanked 107 Times in 99 Posts
Rep Power: 8
 
What smurphny said, PLUS parts for the Kubota engines are cheaper then most other engines (Volvo, Westerbeke, Universal). Volvo's probably have the worst reputation for hard to find and EXPENSIVE parts but all branded parts will be more $$$ then for a Kubota; so do yourself a favor and cross Volvo off your used diesel engine list.

The $7k price for a brand new Beta is what it is. There will be other costs associated with a diesel re-power job though: new fuel tank & lines, might as well re-do the hot section of the exhaust, cutless bearing and stuffing box while you are at it, and you might need a new prop and/or shaft coupling for whatever HP engine you end up with.

Use eBay and CL to hunt down used diesels in your area. I'd ask around at your local boat yards as well.

A re-power is not going to be cheap; cheaper if you can do most of it yourself though.

You might be able to get around ~$1K for an Atomic 4 in good working order on the used market.

Good luck.

"The cure for anything is salt water~ sweat, tears, or the sea." ~Isak Denesen

Everybody has one:

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
CalebD is online now  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

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
CS 36T ladder replacement and engine question SalutetoRelic CS Yachts 16 10-10-2014 04:38 PM
462 Engine Replacement jb1842 Morgan 7 09-07-2010 02:13 PM
Engine Replacement Helimech Gear & Maintenance 3 12-21-2005 11:10 AM
replacement engine for westsail 32 honda2 Gear & Maintenance 3 04-23-2003 10:23 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