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Mitsubishi GS16R-PTK Engine

Name: Mitsubishi GS16R-PTK Engine
Brand: Mitsubishi

The Mitsubishi GS16R-PTK is a 65.37 L 16-cylinder turbocharged with air cooler engine rated at 1200 rpm. It powers generator sets from Mitsubishi. It holds 385 L (101.7 gal) of oil and 170 L (44.9 gal) of coolant.

Also known as: Mitsubishi GS16R-PTK

Part of the Mitsubishi GS16R engine family — 3 variants share parts & fitment.

65.37 L

Displacement

Cylinders

1200 rpm

Rated speed

385.0 L

Oil capacity

On this pageSpecs Generator sets Maintenance FAQ Service intervals Torque & specs Fluids Procedures

Engine specifications

Oil capacity	385.0 L
Coolant capacity	170.0 L
Displacement	65.37 L
Cylinders	16
Aspiration	turbocharged with air cooler
Rated speed	1200 rpm

Generator sets powered by this engine

Mitsubishi GS16R-PTK

How to read your Mitsubishi engine serial & model number →

Maintenance schedule

Item	Spec	Capacity	Part #
Air filter	Air cleaner (Paper element)		—
Fuel filter	Flow control valve		—
Oil filter	Cartridge type paper element		—
Battery			—
Belt			—
Coolant			—
Coolant filter			—
Oil	JX Nippon Oil & Energy TES GXL-193B(SAE#40), KH40 (M) (SAE#40)	385.0 liters	—
Spark plug	DENSO GK2-2 gap 0.22 mm [0.0087 in.], NGK T7415X gap 0.3 mm [0.0118 in.]		—

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Service intervals

Item	Action	Hours	Notes
Engine break-in	Other	50 hr	First service — Operate at a speed lower than rated speed in a light load condition during the first 50 hours
Bypass oil filter	Replace	2000 hr
Full-flow oil filter	Replace	2000 hr
Air cooler	Clean	8000 hr

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Service specifications

Type	Item	Value	Unit	Condition
Clearance	Camshaft end play	0.10 to 0.25	mm	limit 0.40 mm
Clearance	Clearance between bottom face of valve bridge and top face of valve rotator	1.5	mm	or more
Clearance	Clearance between pickup and flywheel ring gear	1.4	mm
Clearance	Clearance between pickup and magnet disk or cam rotor	1.0	mm	or less
Clearance	Connecting rod end play	0.6 to 0.9	mm	limit 1.4 mm
Clearance	Crankshaft end play	0.200 to 0.500	mm	limit 0.600 mm
Clearance	Cylinder liner flange protrusion	0.16 to 0.24	mm
Clearance	Front idler gear backlash	0.12 to 0.28	mm	limit 0.50 mm
Clearance	Front idler gear end play	0.20 to 0.40	mm	limit 0.60 mm
Clearance	Piston ring end gap - No.1 compression	0.6 to 0.8	mm	limit 2.0 mm
Clearance	Piston ring end gap - No.2 compression	0.6 to 0.8	mm	limit 2.0 mm
Clearance	Piston ring end gap - Oil	0.3 to 0.5	mm	limit 2.0 mm
Clearance	Rear idler gear backlash	0.12 to 0.18	mm	limit 0.50 mm
Clearance	Rear idler gear end play	0.30 to 0.60	mm	limit 1.0 mm
Gap	Spark plug gap - Denso (GK2-2) initial	0.22 ± 0.03	mm
Gap	Spark plug gap - NGK (T7415X) initial	0.3 ± 0.05	mm
Other	Ignition timing	BTDC ±1°	crank angle	varies according to specifications; refer to caution plate on No. 1 rocker cover
Other	Valve timing - Exhaust close	BTDC 8°	crank angle	when valve clearance is 2 mm
Other	Valve timing - Exhaust open	BBDC 28.5°	crank angle	when valve clearance is 2 mm
Other	Valve timing - Inlet closing	BBDC 44°	crank angle	when valve clearance is 2 mm
Other	Valve timing - Inlet opening	BTDC 5.5°	crank angle	when valve clearance is 2 mm
Pressure	Compression pressure (limit)	1.95	MPa
Pressure	Compression pressure (standard)	2.6	MPa	approx. at 120 min-1
Pressure	Engine oil pressure at idling	0.20 to 0.29	MPa
Pressure	Engine oil pressure at rated speed	0.49 to 0.64	MPa	oil temperature 60 to 70 °C
Pressure	Oil pump safety valve opening pressure	1.3 ± 0.13	MPa
Pressure	Piston cooling nozzle valve opening pressure	0.10 to 0.15	MPa
Pressure	Relief valve opening pressure	0.59 ± 0.02	MPa
Speed	Maximum speed	5 to 10 % higher than rated speed	min-1	faulty if lower or 15 % higher than rated speed
Speed	Minimum speed	600 to 650	min-1
Torque	Air cooler	60 ± 5.4	N·m
Torque	Antler pipe union nut	39	N·m
Torque	Balance weight	490 ± 24.5	N·m	[Wet]
Torque	Bearing cover for oil pump and dummy water pump drive	108 ± 10.8	N·m
Torque	Bridge lock nut	55 ± 2.8	N·m
Torque	Camshaft gear (rear)	127 ± 6.4	N·m
Torque	Camshaft thrust plate	59 ± 5.9	N·m
Torque	Connecting rod cap	637 ± 31.9	N·m	[Wet] 2-time tightening method; bolt ID mark CS, CL
Torque	Cylinder head bolt	539 ± 27	N·m	torque method; angle method snug 294 ± 14.7 N·m + 65 ± 3°; [Wet] 2-time tightening
Torque	Cylinder liner pusher bolt	98	N·m	Liner flange protrusion measure
Torque	Double damper (bolt)	490 ± 24.5	N·m
Torque	Dummy water pump	108 ± 10.8	N·m
Torque	Dummy water pump gear (nut)	390 ± 78.4	N·m	For oil pump drive
Torque	Exhaust manifold V-clamp (Dynamic pressure)	8.35 ± 0.45	N·m
Torque	Exhaust manifold V-clamp (Static pressure)	20 ± 1.0	N·m
Torque	Exhaust manifold mounting bolt	98 ± 4.9	N·m
Torque	Exhaust pipe coupling	8.8 ± 1.0	N·m
Torque	Flywheel	588 ± 29.4	N·m	[Wet]
Torque	Front gear case (M12)	59 ± 3.0	N·m
Torque	Front gear case (M16)	216 ± 10.8	N·m
Torque	Front idler shaft	108 ± 10.8	N·m
Torque	Front idler shaft thrust plate	60 ± 6.0	N·m
Torque	Front plate	59 ± 5.9	N·m
Torque	Gas valve holder	177 ± 8.9	N·m	Apply anti-seize compound (37594-01700)
Torque	Gas-valve lock nut	55 ± 2.8	N·m	Adjusting screw
Torque	Gas-valve rocker arm	30 ± 1.5	N·m
Torque	Knocking sensor	20 ± 1.0	N·m	Do not use a washer
Torque	Main bearing cap	588 ± 29.4	N·m	[Wet]
Torque	Main bearing cap side bolt	392 ± 19.6	N·m	[Wet]
Torque	Oil pan	59 ± 5.9	N·m

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Recommended fluids

Fluid	Grade	Standard	Capacity	Notes
Coolant	LLC (Long Life Coolant)		170.0 L	Coolant volume (engine body) approx. 170 liters
Engine oil	SAE#40	JX Nippon Oil & Energy TES GXL-193B(SAE#40), KH40 (M) (SAE#40); IDEMITSU Apolloil Co-gene Alpha CG40M (SAE#40)	385.0 L	Engine total approx. 385 liters (oil pan approx. 355 L; level gauge between H-L 60 L)
Fuel	City gas 13A
Grease	Silicone grease G-30M			P/N 37594-05400; apply to O-rings and connectors

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Procedures

Ignition Timing - Inspect and Adjust adjustment

⚠ Do not make any sudden large adjustments while the engine is running.

Tools: Timing light, PC monitoring tool

Check the adjustment of the magnet disk installed on the front end of the left camshaft.
Connect CD200D output unit and fasten timing light clip to No. 1 cylinder spark plug cord.
Start the engine and operate at rated speed.
Illuminate the pointer and damper using the timing light; the aligned angle is the ignition timing.
If not to standard, adjust by turning the timing switch on the CD200D unit.
After adjusting at No. 1 cylinder, check again at No. 9 cylinder at rated speed.

Valve Bridge and Adjusting Screw - Adjust adjustment

⚠ Secure the standard clearance between the valve bridge and the valve rotator.

Loosen the adjusting screw so its top protrudes from the nut top face by 6 to 7 mm.
Press the top of the bridge by hand so the solid side contacts the valve stem top face.
Turn the adjusting screw slowly until it contacts the valve stem top face.
Turn the screw further by 10 degrees, and tighten the lock nut to the specified torque.

Valve Clearance - Check and Adjust adjustment

⚠ Adjust the gas valve clearance after adjusting the inlet valve clearance.

Tools: Feeler gauge

Adjust the valve clearance when the engine is cold.
According to the firing order, adjust at TDC of compression stroke by turning the crankshaft in the normal direction.
Insert a feeler gauge between the rocker arm and the bridge cap to measure.
Tighten or loosen the screw to adjust until feeler gauge movement is slightly restricted.
After adjustment, tighten the lock nut firmly, then check the clearance again.

Compression Pressure - Measure diagnostic

⚠ Ensure the battery is fully charged to crank the engine with the starter.

Tools: Compression gauge P/N 35A91-03300, Gauge hose P/N 35A91-03400, Gauge adapter P/N 35A91-03500

Remove the spark plug from the cylinder head where the compression pressure is to be measured.
Install the gauge adapter into the spark plug hole with the gauge hose inserted.
Shut off the fuel gas supply, and crank the engine with the starter.
Read the engine speed and compression pressure while running at a stable speed.
If the measured value exceeds the limit, overhaul should be done.

Connecting Rod Cap - Install installation

⚠ [Wet] 2-time tightening method.

Tools: Connecting rod gauge P/N 37791-01500 (0.5 mm), Connecting rod gauge P/N 37791-01600 (0.6 mm)

Install the lower connecting rod bearing, aligning its lug with the lug slot of the cap.
Apply engine oil on bolt threads, seating surfaces, and sliding surface.
Make sure matching numbers are on the same side, then install the cap.
Hand tighten the connecting rod bolts.
Measure connecting rod end play and adjust within standard.
Tighten connecting rod bolts to specified torque, loosen completely, and tighten again.

Cylinder Head Bolts - Tightening installation

⚠ [Wet] apply engine oil to thread and bolt bearing face.

Tools: Head bolt plate P/N 37598-08900

Tighten cylinder head bolts to the specified snug torque in the sequence shown.
Place the head bolt plate on the top of the cylinder head.
Put a mark on the cylinder head bolt.
Tighten bolts by turning 60 ± 3° in the specified sequence.
Loosen all bolts, and then tighten them again with the angle method.

Cylinder Liner - Install installation

⚠ DO NOT apply engine oil on O-ring grooves on cylinder liner.

Tools: Cylinder liner installer

Install the O-rings on the cylinder liner.
Insert the shim into the cylinder needing flange protrusion adjustment.
Apply engine oil on O-ring sliding surface in the crankcase and on the cylinder liner O-rings.
Slowly insert the cylinder liner into the bore in the crankcase.
Lightly tap with a cylinder liner installer until the flange contacts snugly.

Main Bearing Cap - Install installation

⚠ Be sure to tighten the main bearing cap bolts and side bolts in the specified tightening sequence.

Ensure main bearings and thrust plates are coated with clean engine oil.
Install main bearing caps with stamp numbers in order from engine front to rear.
Apply engine oil on the main bearing cap bolts and washers, and hand tighten.
Install main bearing cap evenly with a soft-head hammer.
Apply oil on the side bolts and O-rings, and hand tighten.
Temporarily tighten bolts except rearmost to half of specified torque in sequence.
Then tighten to specified torque in sequence.

Spark Plug - Install installation

⚠ If tightened with excessively high torque, the thread may be damaged.

Tools: Plug wrench, Extension bar

Lubricate the spark plug threads with high temperature stainless steel grade anti-seize compound.
Using a plug wrench and extension bar, install the spark plug into the cylinder head.
Tighten it to the specified torque.

Break-In Operation operation

⚠ Be prepared to activate the emergency stop for an unforeseeable trouble.

Stop the gas supply and crank the engine approx. 10 seconds with starter; repeat 2 or 3 times with one minute intervals.
Start the engine in the normal procedure and confirm low idle speed.
Make sure oil pressure increases immediately and coolant circulates.
Confirm no oil, coolant or fuel gas leaks, and no abnormal noise or vibration.
Increase load progressively per the break-in table.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Parts cataloged across the Mitsubishi GS16R family

111

Part #	Description	Category
08020	F1805	air_filter
27000	h3 \| F4202-'\| \|GASKET 2 2 2	gasket
32630	107\| -04800) \| \|GASKET 2 2 2 iN	gasket
37594-01300	ThreeBond 1211 liquid gasket	gasket
37594-02200	Gasket sealant ThreeBond 1207B	gasket
04826-40065	Flex coupling, nominal diameter 65, manufacturer part M1600-250-650	hose
04826-42050	Flex coupling, nominal diameter 50, manufacturer part NH1625-200B0350	hose
35A47-08200	Flex coupling, nominal diameter 32, manufacturer part M1600-125-0325	hose
35A47-08600	Flex coupling, nominal diameter 80, manufacturer part M1600-300-0650	hose
011294	Applicable up to	other_service
011295	Applicable from Part newly	other_service
03600	F3200	other_service
04826	201 -22500! CAP,SEALING 72 72 72	other_service
04827	203) -9010 PLUG, TAPERED 24 24 24	other_service
05050	F4002	other_service
05501	35A03	other_service
05505		other_service
05507	2:01) -10180 \| O-RING 14 14 14	other_service
05605	Bl \| -05030 \| BUSHING 1 1 1	other_service
05946	17, \| -02001] \| WASHER, SEALING 1 1 1 nA	other_service
05950	28 \| -04010/\| SCREW,SET 48 48 48	other_service
05969		other_service
05978	4 \| -10110} \| BOLT 48 \| 48 48 Al	other_service
06000	7 \| F2846- IN, DOWEL 48 48 48 IN	other_service
08000	6 F2515- WASHER, SPRING	other_service
08025	F1035	other_service
10000	F2500	other_service
10016	F1805	other_service
10025	f F1805~- BOLT,W/WASHER - 2[2]2 A	other_service
10055	F1805	other_service
10065	F1825	other_service
10070	F1035	other_service
10300	35A03	other_service
10601	35A03	other_service
12000	F2305	other_service
12020	he \| 35C04- OCKER ASSY, EXH 12 12 12	other_service
12025	25 \| F1155- \| BOLT 12 12 12 al	other_service
12030	23 \| 35C04- OCKER ASSY,IN 12 12 12	other_service
12035	F1035	other_service
12060	F1035	other_service
12075	F1035	other_service
12085	F1035	other_service
13000	F5006	other_service
13710	35A03	other_service
14000	1 [01 \| F2846- PIN,DOWEL 4]° A	other_service
15000	F4540	other_service
16000	F4610	other_service
16030	F1035	other_service
16055	F1035	other_service
16120	F1035	other_service
16130	F1035	other_service
16500	32C04	other_service
18000	F2320	other_service
20000	F4610	other_service
20075	F1035	other_service
21000	F5006	other_service
26000	F5006	other_service
30004	2. This Parts Catalogue applies to the engines whose serial numbers are and up.	other_service
30007	5 \| -05500 \| (CLAMP 2 2 2 HA	other_service
30912	7% \| -01400 \| PLUG 1 1 1	other_service
31119		other_service
31201	ne \| -71800 ASHER 14 14 14	other_service
32307	3 \| -02600 \| PIN,DOWEL 12 12 12	other_service
32504	02800 \| N \|SCREW,ADJUSTING 29a 32 32 \| 32 32 32 \| 32 00014-10389	other_service
32507	1 -70010 CRANKCASE ASSY 1 J 1	other_service
32545	12900 \| N \|COCK,DRAIN 2»%7J) S-3 g 8 8 8 Yr 10667—	other_service
32607	5 \| -10700 \| PLATE,PLUG 1 1 1l	other_service
33010	22 \| 35C05- OLLOWER ASSY,IN 12 12 12	other_service
33407	4 \| -06100 \| [COCK,DRAIN 2 2 2	other_service
33501	3 \| -13400 \| GUIDE, BRIDGE 24 24 24	other_service
33504	5 \| -10300 \| SEAL,VALVE STEM 48 48 48 A	other_service
33546	103) -06900) \| [COVER 6 6 6	other_service
33707	ho \| -11701\|\| WASHER 72 72 72 rs	other_service
36000	F5000	other_service
36207	4 \| -08900 PRING,CONICAL DISK 12 12 12 IN	other_service
37104	8 \| -13300 \| SCREW,ADJUSTING 24 24 24	other_service
37411	02300 \| PLUG C90 ,C91 2 2 2	other_service
37501	4 \| -01401)\| STUD 12 12 12	other_service
37501-04530	Valve seat ring, oversize 0.03 mm [0.0012 in.], for exhaust (ID mark: Three pink lines)	other_service
37501-04560	Valve seat ring, oversize 0.06 mm [0.0024 in.], for exhaust (ID mark: Four pink lines)	other_service
37501-17932	Valve seat ring, oversize 0.03 mm [0.0012 in.], for intake (ID mark: Three black lines)	other_service
37501-17962	Valve seat ring, oversize 0.06 mm [0.0024 in.], for intake (ID mark: Four black lines)	other_service
37503		other_service
37504	1 \| -28400] \| WALVE 48 48 48	other_service
37505		other_service
37507		other_service
37507-12500	Shim 0.10 ± 0.02 mm [0.0039 ± 0.0007 in.] for cylinder liner flange protrusion adjustment	other_service
37507-12510	Shim 0.05 ± 0.02 mm [0.0020 ± 0.0007 in.] for cylinder liner flange protrusion adjustment	other_service
37507-12520	Shim 0.15 ± 0.02 mm [0.0059 ± 0.0007 in.] for cylinder liner flange protrusion adjustment	other_service
37525	7 \| -03700 \| NUT,CAP D30 1 1 1	other_service
37594-01700	Anti-seize compound (NEVER-SEEZ, high temperature stainless steel grade)	other_service
37594-02300	Silicone sealant KE45-W (Shin-Etsu Chemical Co.) or equivalent	other_service
37594-05400	Silicone grease G-30M	other_service
37703		other_service
37704		other_service
37707		other_service
37709		other_service
37711	03200 11 17,14 \| 45950-11100 62-01 \| 89 §& 61-04 \| 85 12	other_service
37736		other_service
37766		other_service
37803		other_service
37805		other_service
37807		other_service
37813		other_service
40604		other_service
45742		other_service
47500	neé \| -60400 \| COVER W35 1 1 1	other_service
50100	35A03	other_service
51020	35A03	other_service
55646		other_service
82461		other_service

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

Common questions

What is the oil capacity of the Mitsubishi GS16R-PTK?

The Mitsubishi GS16R-PTK engine has an oil capacity of 385.0 liters.

What is the displacement of the Mitsubishi GS16R-PTK?

The Mitsubishi GS16R-PTK has a displacement of 65.37 liters with 16 cylinders.

Which generators use the Mitsubishi GS16R-PTK engine?

The Mitsubishi GS16R-PTK powers 1 generator set(s), including Mitsubishi GS16R-PTK.