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  #1   IP: 167.165.222.44
Old 02-23-2021, 01:43 PM
joematrix1013 joematrix1013 is offline
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Atomic 4 engine for sale in Chicago $1500obo

__SOLD__ Atomic4 motor.

My ATOMIC 4 IS OUT and awaiting a new owner! My P28 is in the water at Burnham Harbor in Chicago. I have lived aboard for over 4 years. Due to Covid, I got stranded on the river without a chance to get her out on the lake as I usually do during the summer. I confess I neglected to run the motor periodically throughout the summer. I was involved in a number of repairs and since I was dock-locked for the summer, running the motor in was the last thing on my mind. I know better.
> When I winterized the motor this last fall, it was rough running. Since I planned to repower this year anyway, I didn't address and servicing. I can report that in the 4 years that I have owned the sailboat, I have not had any issues with the motor. I sail into and off of my mooring can. So, I rarely go through a tank of gas in a season. However, since the boat stays in the water year-round, I motor 10 miles up the river in the Spring, and 10 miles down in the Fall. These "bridge runs", as they are lovingly referred to, can take up to 6 hours. Forward, reverse, full power, and sipping gas. It can be a real test of a motor's ability, and I have never had an issue. The motor runs at hull speed at 180 deg, no smoking...ect. I believe that the motor is original, so 1976
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Last edited by joematrix1013; 06-19-2021 at 04:29 PM.
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Old 03-21-2021, 08:27 PM
wagner wagner is offline
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ebay

Did I just buy this from you on Ebay?
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Old 03-25-2021, 04:09 PM
joematrix1013 joematrix1013 is offline
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No sorry. I am not selling it on ebay, although there are a couple listed there
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Old 03-26-2021, 08:12 PM
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interesting. just a coincidence then. I did just buy an a4 from chicago on ebay!

good luck!
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Old 03-26-2021, 11:26 PM
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Joe, please take no offense, I think your price is too high. No one really cares about the tank, controls and batteries and stuff. They are probably a burden since the buyer would probably need to dispose of them.
You might be better off lowering your price and ditching the accessories yourself.
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Old 03-29-2021, 02:15 PM
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I concur with the price comment but I could use a little guidance - don't want to steal the thread About 30 yrs ago I bought a A4 from an older gentleman who's son was forcing him [and paying] to repower to diesel for safety concerns. He had the block reworked in what what called a "short block rebuild" and had machine shop bills etc. It turns out it is a late model and I have had for 45yrs a 1966 Morgan 34 with a very good running early model. Anyway it has been stored indoors heated at the yard in the original shipping grate and periodically I would add oil to the cylinders and hand rotate. I may need to switch yards after this season and loose the storage. To anyone what is a good number to give someone a deal for "pig in a poke"?
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Old 03-30-2021, 02:05 PM
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To both of you, price improves with more good news/information. History of the motor of RWC vs FWC and where it was ran if RWC is good info. IMO, having compression numbers, a video showing it running, etc help tremendously in luring buyers. Pictures are a must.

If you could show the cold and warm oil pressure, that would in increase interest for remote buyers as well.

So far, I've had two late model engines and both had unacceptable oil pressure after 30-40 mins of run time... even with aggressive adjustment of the oil pressure relief bolt. Which is why I spent $3500 doing my "Puzzle" rebuilt. Now the oil pressure varies only 5+ PSI between cold and hot.
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  #8   IP: 167.165.222.44
Old 03-30-2021, 03:48 PM
joematrix1013 joematrix1013 is offline
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Pictures will be coming/$3500 was an initial hope only

I posted the update with the $3500.00 as a transparency to communication I've had only. I expect to haggle down from $3500.
The ultimate goal is that the motor will be used and by someone that needs it. I hate to see a b oat or any part thereof sit idle, in good condition, and go to waste.
I always expected to post pictures, but not until after I had it out. I am completely disconnected now and expect to pull it out after Easter. I updated the listing because I struck up a discussion earlier than I expected, so I went with it.
In response to the suggestion that people would not be interested in all the accessories (tank, gauges, ect) I get it. I wouldn't want to have to dispose of something I don't need. I am more than prepared to dispose of anything that a buyer does not need. I don't expect it to raise the value, but if someone were doing a full swap there may be a need.
I am converting over to electric and everything is getting replaced....so everything is up for grabs too
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Old 04-04-2021, 08:12 PM
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773-953-2480
Make an offer. The motor is disconnected and ready to come out. I will be moving the boat out to my mooring 01 May, so I am hoping to sell it before then.
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Old 05-18-2021, 12:55 AM
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Update: the motor is out and currently in Burnham harbor.
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Old 05-18-2021, 09:42 PM
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Joe, Under the carb, there is a 6 digit stamped number which is the block date. the serial number gives us a general idea of age, but that block casting date is really a great data point. Ignore the embossed number..we all think that is a casting number. It is the STAMPED number that is less prominent we are pretty sure if the block casting date.
If I was closer to Chicago, I'd be negotiating with you...condition pics look reasonable if everything else checked out.
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Old 05-19-2021, 01:29 PM
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Thanks Shawn. I check it out and post a picture of the stamped number soon. Stay tuned!
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Old 05-20-2021, 01:24 PM
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Block number stamp
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Old 05-20-2021, 04:00 PM
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I think this is the wrong number. The last 2 digits should be the engine casting year. Look just above the number you took a pic off; and yes, it is behind the fire protector for air intake

see below for an example

https://www.moyermarineforum.com/for...3&postcount=20

several more pictures in the dedicated poll

https://www.moyermarineforum.com/for...?t=5533&page=3
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Old 05-20-2021, 04:16 PM
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Ah, Thank you. I'll post it soon
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Old 05-22-2021, 12:05 AM
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The proper block number....so I should correct the statement that it is a 1977...it is apparently a '76
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Last edited by joematrix1013; 05-22-2021 at 12:07 AM.
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Old 05-22-2021, 12:05 PM
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Quote:
Originally Posted by joematrix1013 View Post
The proper block number....so I should correct the statement that it is a 1977...it is apparently a '76
Keep in mind that this is just the casting date of the block, and not absolutely when the engine was built.

In the 70s, the Atomic 4 was the engine of choice for sailboats under about 36', and they were cranking them out as fast as they could. Since the sailboat market is cyclic, it is likely that they warehoused block production in the winter in order to meet the surge of demand in the spring.

This was way before anyone was practicing "just in time" production.
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Old 05-22-2021, 05:19 PM
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At this point they are ALL old, condition is what matters.
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Old 05-30-2021, 09:48 PM
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The A-4 is still available but it is listed on Ebay now...just a heads up. I didn't want to blindside anyone here on the site.
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Old 06-15-2021, 09:31 PM
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SALE PENDING PICK-UP

This engine is sold pending successful pick-up at the marina.
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Old 06-19-2021, 04:27 PM
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SOLD

This A4 is sold. Thank you all for the help and advice.
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