questions about beta marine diesel engines, diesel generators, diesel
|About Beta Marine Diesel Engines
Beta Marine, based in England, marinizes Kubota [Japanese] industrial
diesel engines. These engines have an excellent reputation for high
horsepower to weight ratio, longevity, smooth running, and low
emissions. They are the most technologically advanced small diesel
engines available today for marine applications. The available engine
range is 10 through 75 horsepower. All Beta Marine engines are
fresh-water cooled, naturally aspirated [non-turbocharged]. Several
makes and types of transmissions, with assorted reduction ratios, are
also available to suit most any vessel.
Several Beta Marine diesel engines are available to replace the Atomic
4 gasoline engine depending upon the vessel's displacement. General
guidelines for displacement hulls follow, but please contact Joe and be
sure to tell him David from affordablemarine.com sent you , for
a specific recommendation concerning your boat and application.
* Boats displacing up to 7,500 pounds may use the
Beta Ten engine.
* Boats up to 10,000 pounds may use the Beta Marine
13.5 hp engine.
* Boats between 10,000 and 14,000 pounds need the 20
hp Beta Marine engine.
* Boats between 14,000 and 18,000 pounds require the
28 hp Beta Marine engine.
The above replacement engines are available with Atomic 4 engine mount
spacing at no additional cost. This precludes the need to modify the
engine bed or stringers to accomodate the new diesel engine. Obviously,
this saves much time and expense. Beta Marine has the only Atomic 4
replacement engine line with this terrific feature.
Low maintenance and repair cost is another advantage of Beta Marine
diesels, as engine parts are available worldwide at any Kubota farm
tractor dealer. Check your yellow pages for a nearby dealer. You will
pay "tractor" prices, not "Marine" parts prices. The savings can be
considerable, especially when compared to Beta Marine's competition!
Also, Beta Marine is happy to supply anyone with part numbers for
routine maintenance parts, so you can shop locally for your best deal
on Wix, Napa, or Kubota lube oil filters, fuel filters, V belts, air
filter, zincs, Jabsco impellers, etc.
Beta Marine recognized the oil change problem years ago, and supplies
all their engines [optional on the Beta Ten engine] with a manual oil
change pump mounted on the engine and plumbed to the low point of the
oil pan. To perform an oil change, just open the valve at the base of
the pump, remove a small cap at the pump discharge, and operate the
pump with one hand. Unlike the cheap hand pumps we are all familiar
with [and disdain] the Beta Marine pump is all brass, high quality,
works easily and very efficiently. I install a piece of clear hose over
the discharge pipe and lead it to a sludge bucket.
To finish the oil change, just close the valve, replace the cap, change
the filter, and add new oil to the engine. This setup actually makes
oil changes fun!
One customer liked this system so much, he had me install a pump on his
Please contact me for further information, or to get answers to your
specific questions. I would also be happy to mail or fax detailed
information concerning any Beta Marine product. If you want the
detailed specifications of any product, you can look for it at the Beta
Marine site or call me.
Beta Marine's line of fresh water cooled diesel engines includes the
Two cylinder engines
* Beta 10 - 10 horsepower
* BZ 482 - 13.5 hp
"Yachting White" Awl Grip paint option, on a
These 2 engines are available with straight line,
saildrive, or 15 degree V drive transmissions, and Atomic 4 engine
Three cylinder engines
* BD 722 - 20 hp
* BD1005 - 28 hp
These 2 engines are available with straight line, 8
degree down angle, saildrive, or 15 degree V drive transmissions, and
Atomic 4 engine mount spacing.
Beta Marine BD722, 20 horsepower engine.
Get a bigger image by clicking on this picture.
Four cylinder engines
* BV1305 - 35 hp
* BV1505 - 37.5 hp
These 2 engines are available with straight line, 8
degree down angle, or 15 degree V drive transmissions.
* BV1903 - 43 hp
* BV2203 - 50 hp
* BV3300 - 75 hp
These 3 engines are available with straight line or
15 degree V drive transmissions.
Please see our Diesel
Generators page for information about Beta Marine diesel
generators. And again if you should decide to request a price be sure
to say David from affordablemarine.com sent you !
Marine Diesel, LLC sells all Beta Marine engines and generators
at a substantial discount. Please contact Joe DeMers and for the BEST
Pricing be sure to tell him David from affordablemarine.com sent you
for a price quote on any Beta Marine product. New Kubota engines and
generators, for industrial or non-marine use, can also be quoted at a
We can also supply discounted engine parts for Universal diesel engines
and Perkins diesel engines.
New and rebuilt marine transmissions, with warranty, from Borg Warner -
Velvet Drive, Capitol, Newage/PRM, Paragon, Techno Drive, Twin Disc,
and ZF/Hurth are available. Please contact Joe DeMers for discount
* Beta Marine now offers a 70 amp alternator as an
option on the 20 horsepower engine and a 100 amp alternator as an
option on the 28 horsepower through the 75 horsepower engines. These
alternators are very efficient, and will produce high output at low
engine rpm. They feature a split charging system, so 2 separate battery
banks, [such as house and engine start banks] can be charged at the
same time. Also available is the Beta Marine controller, that is of the
automatic "smart" type, to charge your batteries at the most efficient
rate. This system will automatically adjust the charge mode to suit
battery load, which ensures maximum life for your batteries.
Installation of the optional alternator
on the BV 1903 [43hp] and BV 2203 [50hp] engines will replace the
standard 65 amp alternator, without altering the width or length of
* Beta Marine North
Carolina Ltd, the U.S. distributor for Beta Marine products, now
offers white Awl-Grip brand epoxy paint on their propulsion engines as
an option. This paint is quite hard, scratch resistant, long lasting,
and very high gloss. It's commonly used on yacht topsides and decks.
Professionally applying this quality paint results in a real "yacht
finish" for your engine and transmission. It also allows any fluid
leaks to be easily observed and brightens the engine compartment. The
cost for painting a BZ482 engine and transmission is $250, larger
engines will cost a bit more.
Should you want any Awl-Grip color other
than white, it will be a special order.
This is a BZ482, 13.5hp engine, with
optional white Awl-Grip epoxy paint, viewed from the port side. Click
on the image to get a bigger picture of this engine with its new color.
Please contact Joe DeMers and be sure to
tell him David from affordablemarine.com sent you , for a
specific quote on painting your new Beta Marine engine.
* Westsail 32 owners that will be repowering with
the BV 1505, 37.5 horsepower engine, can now order special aft engine
mounts, to make the installation much easier. There is also an adapter
plate available to accomodate a Borg-Warner Velvet Drive transmission.
This means you can order the new Beta Marine engine "bobtail", meaning
without a transmission, and use your present Velvet Drive transmission,
to save money.
* A new engine panel is now available, which
completes the Beta Marine engine panel line. There is now a panel to
suit most any mounting area or budget. All panels have 10 feet of
wiring loom, to reach the engine, with longer lengths available. It's
"plug and play" to wire the engine to the panel, which is very
convenient and mistake proof. A push button, to stop the engine, is
included, also mounted on the panel. No rusty stop cable worries here,
as the engine shut down system is electrically operated.
Here's a recap on the panels available:
o Type "A"
engine panel is standard with the Beta 10 engine, and consists of a
start key, with engine warning lights and horn, for low oil pressure
and high coolant temperature, and a light indicating that no battery
charging is occuring.
o Type"AB" panel
is standard on the 13.5 hp, 20hp, 28hp, 35hp, and 37.5hp engines,
optional on the Beta 10, and includes the above features, while adding
a tachometer and digital hourmeter. It is sized to directly replace the
old Volvo panel.
o Type "B" is
the new panel option, and includes all the above features, with the
addition of an engine temperature gauge. It's a bit larger than the
"AB" panel, and will fit all the above engines, except for the Beta 10.
o Type "C" is
the top of the line panel, and includes all the above features, with
the addition of complete instrumentation, such as an oil pressure
gauge, coolant temp gauge, and voltmeter. Type "C" is standard with the
43hp, 50hp, and 75hp engines, and optional on the smaller engines. It
fits very nicely on a Catalina 30, with the 20hp engine installed.
Click on the image below for a bigger picture of this panel.
optional "C" or "Deluxe" instrument panel.
* All Beta Marine engines are now available
"Bobtail", or without transmissions, at a cost savings. This is ideal
for the person who wishes to retain their current Hurth/ZF,
Technodrive, or PRM transmission. Also available is a factory adapter
that allows Borg-Warner Velvet Drive transmissions to be mounted to the
engine. Please contact Joe DeMers for details.
* Saildrive transmissions are available for the
following Beta Marine engines: BZ482, 13.5 horsepower; BD722, 20
horsepower; BD1005, 28 horsepower. These engine/saildrive 2:1 reduction
units are very compact, and easy to install. They are ideal for the
boat owner who wishes to install an engine himself, or where there is
minimal room to fit an engine using a conventional inline transmission
and prop shaft. One only needs to trim the fiberglass engine bed to fit
the hull, cut the hull to accept the saildrive lower unit, epoxy the
engine bed in place, and mount the engine. Also, engine/shaft
alignment, and leaky stuffing box problems are forever eliminated,
unlike a conventional prop shaft installation.
* Volvo saildrive owners now have the option of
retaining their saildrive transmission when repowering with a new Beta
Marine engine. For example, if your engine is a Volvo MD11 with
saildrive, you may order the new Beta Marine 20hp or 28hp engine so it
will fit your presently installed Volvo saildrive transmission and
engine bed. This is ideal for the boat owner wishing to save money and
time when repowering. Please contact Joe DeMers for details.
* Remote lube oil filter mounts are now available to
fit most Beta Marine engines. This allows the lube oil filter to be
placed wherever one desires to facilitate engine maintenance. On a
Passport 40 repower, with the 50hp Beta Marine engine, the oil filter
was placed just under the cabin sole, in an upright position. The owner
can now just lift the sole board, put a bucket under the oil filter,
and quickly and easily do an oil change. This feature, combined with
the standard oil pan pump, makes oil changes clean fun!
* Technical drawings, including dimensions, of all
Beta Marine engine and transmission combinations are available by
request. Please send your mailing address, or fax number, with a note
concerning what engines you are interested in, to
* Beta Marine now offers a remote mounted engine
coolant tank, made of heavy cast aluminum, that is primarily designed
to be used when a separate hot water tank is installed in the boat. The
hot water tank will heat and store domestic fresh water for showers and
cooking whenever the engine is running. In many water heater
installations, the hot water tank is mounted higher than the engine,
resulting in air being trapped in the tank. This can lead to the engine
overheating since the trapped air acts as a blockage in the engine's
cooling system. This new "header tank" is equipped with a pressure cap,
just as is your car's radiator, to regulate engine cooling system
pressure. The pressure cap also works as a valve to bleed air from the
cooling system. It can be mounted in any convenient location on a
bulkhead that is higher than the domestic hot water tank. Catalina 30
sailboat owners will want to install this header tank in the port
cockpit locker where it can be easily reached for checking the engine
This header tank can also be used when
the engine's standard pressure cap is inaccessible, as it can be on
some boats that use a V drive transmission. The Pearson 323 is one such
design that can benefit by mounting the header tank in a cockpit
locker. The header tank also increases the capacity of the engine
Dimensions - 8" long, 7.5" tall,
protrudes 4.3" from the bulkhead. Is easily attached to the bulkhead
with 4 screws. The addition of a separate coolant recovery tank will
ensure that the header tank remains completely filled with coolant and
will also purge the engine cooling system of air pockets.
Here's how the system works -
As the engine warms to operating
temperature, the fresh water coolant expands and pressurizes the
cooling system. When the pressure reaches 15 psi, the pressure cap
valve opens, maintaining the correct system pressure. As the engine is
operated and coolant freely circulates, trapped air will find it's way
to the high point of the cooling system, which is this header tank. The
air will be bled off when the pressure cap valve opens. This occurs
periodically while the engine is running. If a separate coolant
recovery tank is installed, any coolant that's expelled from the header
tank will accumulate there. When the engine is shut off, it slowly
cools down creating a partial vacuum in the engine's cooling system.
The pressure cap valve now opens under this vacuum which causes coolant
to be sucked from the recovery tank into the header tank.
The net effect of this action is to
purge all air pockets from the engine cooling system which otherwise
may cause localized engine overheating. Having the engine cooling
system completely full and purged of all air, helps maximize engine
life and reliability. To check for the correct coolant level just look
at the coolant recovery tank, as it's made of translucent plastic. This
refinement is highly recommended for any fresh water cooled engine.
* An engine power take off and mounting bracket is
now available for Sea Frost refrigeration compressors. This will allow
the Sea Frost unit to be mounted on your new Beta Marine engine, and be
mechanically driven. All the required hardware is designed and
installed by the Beta Marine factory, for maximum reliability. Please
contact Joe DeMers for details.
Beta Marine BZ482 engine with 13.5 horsepower and standard transmission
Now For NEW,Used + REMAN Engine Sales.
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From regular routine maintenance to Awlgrip, Imron, and PPG spray jobs to
Sound Marine Diesel, LLC sells all Beta Marine Diesel engines and
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