View Full Version : My beaten and abused Atomic 4

03-07-2011, 01:41 PM
The history of my Ericson 27 is pretty much unknown to me.
What has been apparent from day 1 is that defered maintenance (defered to the next owner) was the only maintenance it ever recieved (hence the redicuously low purchase price).
Due to a business startup I've not used the boat in awhile but the time has come to get it going again I'm not going to lose another summer of not taking the boat out!

Tackling the engine.
It seems that rust and scale are the only thing bonding the water jacket and now I've found that the exhaust manifold is toasted.

Hi A-4!
Lower water jacket beneath alternator.

03-07-2011, 01:44 PM
Pulling the carb so I can rebuild it with my Moyer Marine kit.




03-07-2011, 01:49 PM
Oh noes! must be leaking salt water from the exhaust manifold....


3 studs w/nuts hold the manifold in place, the first 2 are off, the third is a lump of rust.

If anyone has a lead on a manifold, please PM me.

Angry Dolphin
03-07-2011, 04:36 PM
Rust Never Sleeps

The Flash
03-07-2011, 05:21 PM
Good Old Boat had an article on a full rebuild of the A4 in their last edition - maybe a couple still floating around West Marine?

Our 41-year-old C&C Corvette, Trillium, has the distinction of being built originally as a gift to retiring Ontario Premier John Robarts from his Progressive Conservative Party. We bought her in 1996 knowing this illustrious history but also knowing full well that she was equipped with her original Atomic 4 gasoline internal combustion engine. In 13 years of cruising north Florida and south Georgia, and then the Hudson River and Long Island Sound, I can’t say the A4 gave us completely reliable service. Moyer Marine, Klacko Marine

Article Number: 4944
Issue: 76 - January/February 2011
Page No: 37-41
Read Online: Not Available Online

IOR Geezer
03-07-2011, 06:41 PM
Can you pull it and take it to a shop or home to work on it?

03-07-2011, 08:19 PM
Long shaft outboard. It's only a 27 footer and it will sail better without all that weight. That's what I'd do.

03-07-2011, 11:06 PM
No plan for racing the boat and the boat trim sit's bow high anyways, plus I kinda dig having an inboard.

Compression is OK for now and my short term need is to get a new manifold, install an electonic fuel pump and a flame arrestor assembly with PCV system on the right side and replace the water jacket (with engine flush) on the left side.

It's only money, right?.......right??

Damn, even the float valve seat put up a fight, it took an easy out just to remove it!




hard aground
03-08-2011, 06:59 PM
Thank God it's a SAILboat.

03-09-2011, 09:53 PM
Thank God it's a SAILboat.

In 1979 I sailed a C&C 39 from Hawaii to Seattle that had a A 4 aux engine. What the crew did not know was the A 4 had a small cooling hose (raw water) leak that was spraying salt water into the air intake during our planned motor through the NE pacific high. 1,000 miles from land we shut down the engine to take a swim and use the SSB without the engine interference. It never started again.

As a pure sailboat, in the calm of the NE pacific high our worst days progress was 30 miles. It was pleasant sailing for many days and nights. We ended up taking 29days and sailed the boat into it's slip at Shilshole.

As said before, rust never sleeps, and defered maintenance is never free.


03-10-2011, 12:15 AM
Am moving to Edmonds shortly, getting out of the Everett marina under sail wouldn't be a prob, but getting to the slip in the deep corner by the fishing pier in Edmonds would be a good trick.

I'm looking to get the thing to give me roughly 20 minutes running time, Ericson 27's don't like to be sculled.

03-10-2011, 02:43 PM
Found my replacement engine today.



boat ownership....*sigh*

03-16-2011, 10:02 PM
Yay!! it is now in my possesion!


03-16-2011, 10:08 PM
I might have to cut this manifold stud just to get it away from the block, not sure why one of the head nuts is so loose.
Both the manifold and head are going to the machine shop to get cleaned up, new gaskets from Moyer have been ordered.
Even though the top of the electric fuel pump looks like crap, I'm hoping it works.



03-26-2011, 03:30 PM
Call Stanley.


03-28-2011, 04:36 PM

I found some A 4 cooling and ignition parts from the late 70's while looking for something else in my old boat treasure box.

There is a small diameter 90 degree bent hose, a T-stat that looks new with several gaskets, a Distributor rotor that looks new, a set of points (clearly used), and several condensors of unknown status. It would be great to send these off to a deserving home.

If you are interested in this lot of misc parts PM me your shipping address and I will send them off UPS. (I have the parts in Kirkland.)


03-29-2011, 12:08 AM

PM Sent.