LYA Series (370 - 440mhp)
 
 
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.		  

Why choose Yanmar?
 



[Click image to enlarge]


  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 (mm) 100 x 110 105.9 x 110
Displacement 5.184 litres 5.813 litres
Dry Weight (engine only) 510 kg 515 kg
   
 
 
  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 separator 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 solenoid 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
   
 

Brochure - 6LYA-STP
Brochure - 6LY2A-STP
 

Line drawing - 6LYAM-STP
Line drawing - 6LY2A-STP - MG5061A
Line drawing - 6LY2A-STP - KMH60A

 



Download - 6LYAM-STP Drawings - ZIP file
Download - 6LY2A-STP - MG5061A Drawings - ZIP file
 Download - 6LY2A-STP - KMH60A Drawings - ZIP file


Drawings are in Drawing Interchange Format (DXF)
 

Download free DXF Viewer here [6.7MB]
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