Are Atomic 4 engines good?
The short of it is that the Atomic 4 is not a particularly unreliable engine in its original form, and there are modern upgrades to make it better. To put the issue of reliability in perspective, it should be understood that few, if any, marine engines are as reliable and maintenance-free as modern automobile engines.
How many horsepower is the Atomic 4?
30 horsepower
The Universal Atomic 4 is a four-cylinder, gasoline engine produced by the Universal Motor Company between 1949 and 1984 for use as auxiliary power on sailboats. Both 18 horsepower (13 kW) and 30 horsepower (22 kW) versions of the engine were produced.
How much does an Atomic 4 engine weight?
WARRANTY AUTHORIZATION
| Models | UJ, UJS, UJR, UJSR, UJVD |
|---|---|
| Water Outlet National Pipe Thread Size | 3/8″ |
| Fuel Pump Connection | 1/8″ N.P.T. |
| Fuel Line – Copper Tubing | 5/16″ O.D. |
| Weight of engine, net pounds | UJ-310, UJR-330, UJVD-335 |
How do you start an Atomic 4 engine?
As you crank the A-4, water pools up in the waterlift and isn’t pushed out until the engine starts and exhaust gases push the water up and out. With a lot of cranking and no ignition, it’s very easy to flood the engine through the exhaust manifold as water backs up. Welcome aboard!
What is an Atomic Diesel?
It was a 31 cu in, 11 hp 2 cylinder raw water cooled diesel, based on the Kubota Z-500 block, and fitted with a Hurth transmission. The 5411 was built from 1977 to 1982. Approximately 2,900 were sold. It was replaced by the Model M15, which was produced in 1982 and 1983. Approximately 370 were sold.
How much oil does an atomic 4 take?
On a level bench, it will take approximately 5 – 1/2 quarts to fill an Atomic 4 after an overhaul. Tilted at an angle approximating a normal installation on a sail boat, an engine will only take from 4 to 4 – 1/2 quarts to bring the level to the full mark.
