Atomic 4 - SailNet Community
 2Likes
Reply
 
LinkBack Thread Tools
post #1 of 27 Old 06-30-2013 Thread Starter
Senior Member
 
Join Date: May 2012
Location: Port Dalhousie, St.Catharines. Ontario
Posts: 127
Thanks: 6
Thanked 1 Time in 1 Post
Rep Power: 4
 
Atomic 4

Hello All,

Seems every time we almost find that right first boat, new questions/concerns arise. There actually 3 boats in our sights...1975 Northern 29, 1981 Mirage 27, both of these have atomic 4 gas with sail drive. The third is a 1979 Mariner 28 with a Yannmar Diesel. The Northern and Mirage are completely equipped the way we had hoped for and are around the same price range....7k. The Mariner needs a few items we had hoped for, but has the diesel engine and looks great and I know I can get it for 5k.
My main concern is the Atomic 4 gas with sail drive. Both owners have regularly maintained their engines?

Can you comment please, I look forward to your advice.

Thanks,

Ron
Kalina-Lona is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 27 Old 06-30-2013
72 C&C Corvette
 
CorvetteGuy's Avatar
 
Join Date: Jun 2011
Location: PHYC
Posts: 318
Thanks: 0
Thanked 2 Times in 2 Posts
Rep Power: 5
 
Re: Atomic 4

I haven't seen a A-4 coupled to a sail drive before but, I've got a 40 year old A-4 been rebuilt once if well maintained they are a solid reliable engine. and all parts are readily avalible.
CorvetteGuy is offline  
Quote Quick Reply Share with Facebook
post #3 of 27 Old 06-30-2013
Senior Member
 
Join Date: Feb 2010
Posts: 203
Thanks: 1
Thanked 3 Times in 3 Posts
Rep Power: 6
 
Re: Atomic 4

Same experience as CorvetteGuy. 1000s of miles on my 1965 A-4. Just maintain and use the blower. If you end up with a A-4 you will find this forum, Moyer Marine Atomic 4 Engine Rebuilding and Parts ,as well as sailnet helpful. Dan S/V Marian Claire
marianclaire is offline  
Quote Quick Reply Share with Facebook
post #4 of 27 Old 06-30-2013
Senior Member
 
tommays's Avatar
 
Join Date: Sep 2008
Posts: 4,296
Thanks: 1
Thanked 30 Times in 30 Posts
Rep Power: 7
 
Re: Atomic 4

My A4 is fine

In all reality the fact that it is a diesel or the A4 does not matter much the condition is what matters



The boat should look like this as we need to understand what you mean by saildrive as they were not used on A4s

1970 Cal 29 Sea Fever

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

1981 J24 Tangent 2930
Tommays
Northport NY


If a dirty bottom slows you down what do you think it does to your boat
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
tommays is offline  
Quote Quick Reply Share with Facebook
post #5 of 27 Old 06-30-2013
Senior Member
 
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 11,102
Thanks: 46
Thanked 229 Times in 214 Posts
Rep Power: 7
   
Re: Atomic 4

Not a fan of gas engines, when diesels are so available. Many seem to like their A4s though.

From the sounds of it, however, you will not get the $5k boat to match your satisfaction with the $7k boats for the difference.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Jeanneau 54DS

In the harsh marine environment, something is always in need of repair. Margaritas fix everything.
Minnewaska is offline  
Quote Quick Reply Share with Facebook
post #6 of 27 Old 06-30-2013
Senior Member
 
rugosa's Avatar
 
Join Date: Aug 2011
Location: In a strange land
Posts: 578
Thanks: 1
Thanked 10 Times in 10 Posts
Rep Power: 4
 
Re: Atomic 4

Quote:
Originally Posted by Kalina-Lona View Post
atomic 4 gas with sail drive.
If it's gold/bronze/copper color it's an Atomic 4 (atomic bomb) gas engine - lots of these around and outfits established as quality rebuilders (have never seen one with a saildrive either)

If it's not it's an OMC Saildrive (snail drive) - basically an outboard motor power head with no casing installed inboard, coupled to a stationary lower unit leg - considering the age and rebuild parts are increasingly harder to find

I'd weigh the cost of the extras you are looking to add to the diesel powered boat compared to an Atomic 4/OMC engine rebuild/replacement, and also consider the age and condition of the features existing on the gas powered boats that may need replacing.
rugosa is offline  
Quote Quick Reply Share with Facebook
post #7 of 27 Old 06-30-2013
Senior Member
 
JimsCAL's Avatar
 
Join Date: May 2007
Location: Glen Cove, NY
Posts: 2,808
Thanks: 2
Thanked 70 Times in 65 Posts
Rep Power: 9
 
Re: Atomic 4

I'm with tommays - VERY unlikely you're looking at an A4 with a saildrive. It's most likely a standard shaft and propeller arrangement. I wouldn't rule out an A4 in your price range. Overall condition is more important.
JimsCAL is online now  
Quote Quick Reply Share with Facebook
post #8 of 27 Old 06-30-2013
Senior Member
 
MikeOReilly's Avatar
 
Join Date: Apr 2010
Location: Thunder Bay, Ontario
Posts: 1,639
Thanks: 163
Thanked 74 Times in 65 Posts
Rep Power: 6
 
Re: Atomic 4

My previous boat, recently sold, had an A4. They are good, solid, simple engines. One advantage is that the A4 is a lot quieter than most diesels. The gas fumes thing is no different than carrying propane. Follow proper procedures, and maintain the system, and it's no big deal.

The major downside of A4s is really just a reality about gas vs diesel: diesel is roughly twice as efficient. If range is not an issue (not going long distances, into areas where fuel is hard to find), then the A4 can be a fine engine. If range is important, go with diesel.
Barquito likes this.

Why go fast, when you can go slow.
MikeOReilly is offline  
Quote Quick Reply Share with Facebook
post #9 of 27 Old 06-30-2013
Morgan 33 O.I. Perryville
 
travlineasy's Avatar
 
Join Date: Dec 2010
Location: Maryland
Posts: 3,481
Thanks: 3
Thanked 149 Times in 132 Posts
Rep Power: 5
 
Re: Atomic 4

Where do I start first? First and foremost, the A4 is very reliable, extremely efficient, easy to work on, rugged, and cost efficient. When it comes time for total replacement, you could install three A4s for the cost of a similar HP diesel.

As for diesel being more fuel efficient than gasoline - not when you compare HP to HP. I'm pushing a broad-beam, 15,000-pound plus Morgan 33 O.I. with a 30-HP A4 gasoline. I get about 9 MPG at 1,800 RPM and cruise at 6 MPH on calm water. I have a friend with a similar boat, a Morgan 321, powered with a 3GM30 Yanmar Diesel. The boat weighs less, has a narrower beam and his fuel efficiency and speed are not as good as my A4. And, when it comes to repairs, the cost of replacing that Yanmar is out of this world.

Some folks believe that gas engines are all dangerous because of the possibility of explosion. If 6 decades of being on the water, and having owned 17 boats, spending an average of 70 or more days every year on the water, I have yet to PERSONALLY witness a single boat fire directly attributable to a gasoline engine - not one. I've seen two dozen fires directly related to electrical short circuits, and two diesel explosions. And, none of those fires were aboard sailboats - not a single one.

If you can find a good boat at the price you want to pay, I wouldn't worry whether or not it had an A4 or a diesel engine, as long as it the engine has been well maintained and in good condition.

Good Luck,

Gary
travlineasy is offline  
Quote Quick Reply Share with Facebook
post #10 of 27 Old 06-30-2013
TQA
Bombay Explorer 44
 
TQA's Avatar
 
Join Date: Apr 2009
Posts: 2,910
Thanks: 0
Thanked 79 Times in 75 Posts
Rep Power: 7
 
Re: Atomic 4

If all you want the engine for is to push you in and out of the marina then an A4 is fine.

However if you want to use it for long periods of upwind motorsailing then I would go for the diesel.

You don't see many A4s in the Eastern Caribbean.
TQA 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
Looking for an Atomic 4 probwhite General Discussion (sailing related) 6 01-15-2013 06:47 PM
Atomic Die's CZTHOR Atomic 4 5 11-08-2006 11:59 AM
cal 34 atomic 4 tygertyger Atomic 4 1 07-09-2006 09:44 AM
ode to the atomic 4 jwellsfamily4 Gear & Maintenance 1 08-04-2003 11:13 AM
atomic 4 jwellsfamily4 Gear & Maintenance 27 08-03-2003 07:28 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