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LYA Series (Shaftdrive)
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Introduction
Specifications
Accessories
Brochures
Drawings
Introduction
LYA Series (Shaftdrive)
Yanmar LYA Series Marine Diesel Engine
(370 - 440hp)
High performance straight six
For boats, the ability to slot an engine as low down as possible, or to mount twin engines low in the vee of the boat has been critical. The straight six has thus become the configuration of choice, as the crankshaft is still not as long as to require heavy strengthening, there is more capacity advantage over a four, and a six is far narrower than a vee-eight.
Mounting
The mountability is excellent due to its flat top, and due to its narrow profile. Repowering a gasoline engine boat is now a pleasure, for this engine has more muscle and endurance to match virtually whatever was previously being used.
Features
Race proven performance is inherited. Power-to-weight ratio is even more startling. Endurance and fuel economy are at a level that only a diesel could achieve.
It follows current user trends, ie the demand for more power and more speed. And because it is a diesel, smaller fuel tanks can be used saving hundreds of kgs of weight in a fast boat. A speed increase becomes immediately possible.
Direct injection using ultra-high-pressure fine mist injectors makes for excellent economy together with superb performance, yet there is minimal smoke under hard use conditions. Fuel savings, precious energy savings, and an increase in safety accompany the change to a diesel.
All service points are conveniently placed high on the engine. Renowned Yanmar reliability and parts backup complete the package. An engine that will dramatically lift the performance of virtually ANY hull, and likely put you in the race winners seat, if you so desire.
Yanmar 6LYA
Specifications
6LYA-STP
6LY2A-STP
Type
Direct Injection, Turbocharger and Intercooler Type
Cylinders
6
6
Continuous Power
290mhp
@ 3100rpm
350mhp
@ 3100rpm
Rated Power
370mhp
@ 3300rpm
440mhp
@ 3300rpm
Cooling System
Heat Exchanger
Bore x Stroke
100 x 110 mm
105.9 x 110 mm
Displacement
5.184 litres
5.813 litres
Dry Weight (Engine only)
510 kg
515 kg
Accessories
Component
LYA Series Shaftdrive
Installation
Flexible engine mount, 4 pcs/set
STD
Propeller shaft half coupling for KMH6A1
(Straight rough bore)
Optional
Fuel
Fuel/water seperator
Optional
Cooling
Kingston cock, 45A
Optional
Exhaust water mixing elbow, L-Type
STD
Exhaust water mixing elbow, Riser type
Optional
Air vending device for cooling water tank (for V-drive)
STD
Lubrication
Lube oil evacuation pump, rotary type
Optional
Lube oil dipstick for opposite side of engine
STD
Starting and
stopping
Electric engine stop device
STD
Cold starting aid (Air heater type)
Optional
Electrical and
Instrumentation
Electric type bilge pump, 12V
Optional
New B-type instrument panel
Optional
New C-type instrument panel
Optional
New D-type instrument panel
STD
Meter sensor assy for New B, C & D-type panel
STD
Meter sensor assy for dual instrument panel
(New C+C or C+D type)
Optional
Connection wireharness for dual instrument panel
Optional
Extension wireharness, 4 or 6m
6M STD
Control
Side-mount type single control head (MORSE:MV)
Optional
Top-mount type single control head (MORSE:MT3)
Optional
Others
Onboard tool kit
Optional
Brochures
Brochure - 6LYA-STP
Brochure - 6LY2A-STP
Drawings
Line Drawings
6LYAM-STP
6LY2A-STP - MG5061A
6LY2A-STP - KMH60A
AutoCAD Drawings
6LYAM-STP Drawings - ZIP file
6LY2A-STP - MG5061A Drawings - ZIP file
6LY2A-STP - KMH60A Drawings - ZIP file
AutoCAD Drawings are in Drawing Interchange Format (DFX)
Download free DFX viewer here
[6.7MB]