Kinugawa TD05H-20G 7cm Turbo for Toyota Land Cruiser 1HD-T / 1HD-FT / 1HD-FTE – 250–300HP

The Kinugawa TD05H-20G 7cm Turbocharger is a high-output performance turbo upgrade for Toyota Land Cruiser models powered by the 1HD-T, 1HD-FT and 1HD-FTE 4.2-litre turbo diesel engines.

Rated by Kinugawa for approximately 250–300HP potential crank / flywheel power, the TD05H-20G is aimed at Land Cruiser owners looking for substantially greater airflow and top-end performance than the smaller 16G and 18G configurations while retaining the responsive TD05H turbine and compact 7cm / A/R .49 turbine housing.

The 20G combines a larger 52.3 / 68.0mm compressor wheel with the proven 49 / 57mm TD05H turbine wheel. This makes it particularly attractive for modified 1HD builds where the vehicle has sufficient fuelling, intercooling, intake and exhaust capacity to take advantage of the additional compressor airflow.

Power Capability: 250–300HP potential crank / flywheel power

Recommended Use: High-output touring, towing and performance builds where stronger top-end airflow is required while retaining a responsive 7cm TD05H turbine setup.

Engine Compatibility: Toyota 1HD-T / 1HD-FT / 1HD-FTE 4.2L Turbo Diesel

Important: Maximum turbo power capability is not a guaranteed engine output. Actual performance depends heavily on engine condition, fuel delivery, boost pressure, intercooling, intake and exhaust flow and correct tuning / calibration.

Choose the Right Kinugawa Turbo for Your Land Cruiser

OFM4x4 offers six Kinugawa TD05H / TD06H turbo options for Toyota Land Cruiser 1HD diesel engines, covering responsive road-going upgrades through to extreme performance builds.

The TD05H-20G is an excellent choice for a properly modified 1HD engine targeting approximately 250–300HP while retaining the compact and responsive 7cm TD05H turbine configuration.

Why Choose the TD05H-20G?

The TD05H-20G moves beyond the moderate performance territory of the 16G and 18G and into a higher-output 1HD build. Its larger 20G compressor provides increased airflow for engines targeting approximately 250–300HP.

At the same time, Kinugawa retains the 49 / 57mm TD05H turbine and 7cm / A/R .49 turbine housing, helping maintain useful response characteristics in a heavy 4x4.

• 250–300HP potential crank / flywheel capability
• Larger 52.3 / 68.0mm 20G compressor wheel
• Compact 7cm / A/R .49 turbine housing
• CT26-style turbine inlet and outlet
• Strong top-end airflow compared with 16G and 18G
• Suitable for modified touring and towing vehicles
• Suitable for higher-output performance builds
• Multiple compressor wheel configurations
• Multiple turbine wheel configurations
• Multiple actuator spring pressures
• Oil and water cooled

Engine & Vehicle Compatibility

Land Cruiser 80 Series – 1HD-T & 1HD-FT

For the Toyota Land Cruiser 80 Series, Kinugawa lists the TD05H-20G for 1991–1997 HDJ80 / HDJ81 / HDJ82 models equipped with the 1HD-T or 1HD-FT 4.2-litre turbo diesel.

It is designed as a replacement and performance upgrade for the following Toyota turbo references:

• 17201-17010
• 17201-17030

The Toyota CT26-style turbine housing retains compatible 4-bolt inlet and outlet connections, helping reduce the fabrication required compared with converting the vehicle to a completely different turbo mounting arrangement.

1HD-FTE Compatibility

The TD05H-20G is also listed by Kinugawa for the Toyota 1HD-FTE 4.2-litre turbo diesel.

For vehicles using Toyota turbo reference 17201-17040, this includes applicable:

• Toyota Land Cruiser HDJ78
• Toyota Land Cruiser HDJ79
• Toyota Land Cruiser HDJ100
• Toyota Land Cruiser HDJ105 / converted applications where applicable

For these applications, the appropriate compressor housing arrangement should be confirmed. The performance 3-inch compressor housing may be retained where suitable, or a different compressor housing configuration may be required according to the installation.

If ordering for a 1HD-FTE application, please confirm the vehicle model and current turbo configuration so the appropriate setup can be supplied.

Technical Specifications

Available Configuration Options

The Kinugawa TD05H-20G can be configured with different compressor housing, compressor wheel, turbine wheel and actuator options, allowing the turbocharger to be tailored to the intended driving characteristics and engine setup.

Compressor Housing Options

• Anti-Surge
• Non Anti-Surge

The compressor housing uses a 3-inch inlet and A/R .60 nozzle area.

The anti-surge configuration uses a ported compressor inlet arrangement, while the non anti-surge option provides a conventional compressor cover configuration.

Compressor Wheel Options

• Cast 6+6
• Billet 6+6 – recommended where low-end torque is the priority
• Billet 11+0 – recommended where top-end speed and airflow are the priority

The TD05H-20G compressor wheel measures 52.3 / 68.0mm.

Kinugawa identifies the Billet 6+6 configuration with low-end torque and the Billet 11+0 configuration with top-end speed, allowing the 20G to be configured according to how the Land Cruiser will be used.

Turbine Wheel Options

• 12 Blades STD
• 9 Blades STS
• 10 Blades STS 55

All three configurations use the 49 / 57mm TD05H turbine dimensions.

Turbine wheel design influences turbine inertia, exhaust flow and efficiency and therefore contributes to the balance between response and high-RPM performance.

Spring / Actuator Pressure Options

The standard Kinugawa actuator is supplied at:

1.0 bar / 14.7 PSI – Default

Alternative actuator pressures available include:

• 0.3 bar
• 0.5 bar
• 0.8 bar
• 1.0 bar – Default
• 1.2 bar
• 1.5 bar
• 1.7 bar
• 2.0 bar

Important: Actuator pressure must be selected according to the intended boost target, engine specification and boost-control strategy. Installing a stronger actuator spring does not by itself create safe additional power.

Cooling Type

Oil & Water Cooled

The TD05H-20G uses engine oil for lubrication together with coolant circulation through the centre housing for additional thermal management.

20G Compressor – 52.3 / 68.0mm

The defining feature of the TD05H-20G is its larger 52.3mm inducer / 68.0mm exducer compressor wheel.

This provides greater compressor airflow than both the TD05H-16G and TD05H-18G while retaining the same 68mm compressor exducer diameter.

The progressively larger inducer gives the 20G greater airflow capacity and makes it better suited to engines targeting the upper end of a modified 1HD setup.

7cm Turbine Housing for Responsive Performance

Despite the larger 20G compressor, this turbo retains the compact 7cm / A/R .49 turbine housing.

Kinugawa compares this with the approximately 8cm turbine housing of the referenced factory CT26 setup.

The smaller turbine housing increases exhaust-gas velocity through the turbine and helps improve spool response. This is particularly useful on a heavy Land Cruiser, where usable boost response and mid-range torque remain important even when building for higher horsepower.

The trade-off is that a compact turbine housing can become more restrictive at very high exhaust flow than a larger housing. The TD05H-20G therefore provides an interesting combination of a larger compressor with a response-focused turbine housing.

49 / 57mm TD05H Turbine

The TD05H-20G retains the 49 / 57mm TD05H turbine wheel used in the smaller 16G and 18G configurations.

Customers can choose between:

• 12-Blade STD
• 9-Blade STS
• 10-Blade STS 55

This gives additional flexibility when configuring the turbo towards the desired combination of spool response and exhaust-flow capability.

CT26-Style Bolt-Up Turbine Housing

The turbine housing retains the Toyota CT26-style mounting arrangement:

• Toyota CT26 4-bolt turbine inlet
• Toyota CT26 4-bolt turbine outlet
• Internal wastegate

For compatible 1HD-T and 1HD-FT installations, this allows the TD05H-20G to bolt to the factory exhaust manifold and dump-pipe arrangement, reducing the fabrication required compared with converting to a completely different turbine housing format.

3-Inch Compressor Inlet

The performance compressor housing uses a substantial 3-inch inlet.

On applicable 1HD-T / 1HD-FT installations, the original compressor inlet / air-filter pipe must be modified or replaced to connect correctly to the larger 3-inch inlet.

The larger inlet helps reduce intake restriction and allows the 20G compressor to receive the airflow required for higher-output operation.

Journal Bearing with 360° Performance Thrust Bearing

The TD05H-20G uses a journal-bearing centre section with a 360-degree performance thrust bearing.

The 360-degree thrust arrangement is designed for performance turbocharger operation where increased boost pressure and compressor airflow can generate greater axial loading on the rotating assembly.

Oil & Water Cooling

The turbocharger uses both oil and water cooling.

Engine oil lubricates the journal bearing system, while coolant circulation assists with thermal management of the centre housing.

Correct oil supply, coolant circulation, turbo priming and installation procedures are essential for turbocharger reliability.

250–300HP Performance Capability

Kinugawa rates the TD05H-20G diesel configuration for approximately 250–300HP potential crank / flywheel power.

The manufacturer's maximum power figure represents the potential airflow capability of the turbocharger based on compressor-map choke flow rather than guaranteed vehicle output.

Actual engine performance depends on factors including:

• Engine condition
• Fuel delivery
• Injection pump or ECU calibration
• Boost pressure
• Intercooler efficiency
• Intake airflow
• Exhaust system
• Exhaust gas temperature
• Ambient conditions
• Supporting engine modifications

Ideal for Higher-Power Touring & Towing Builds

The TD05H-20G is particularly attractive where the vehicle requires significantly more power than a mild turbo upgrade can provide.

It is well suited to applications such as:

• 250–300HP Land Cruiser builds
• High-output touring vehicles
• Modified towing vehicles
• Heavy overland builds
• Land Cruisers running larger tyres
• Vehicles carrying substantial accessories and equipment
• Upgraded intercooler installations
• Free-flowing exhaust systems
• Modified fuel systems
• Performance-focused 1HD builds

At this power level, supporting modifications and correct calibration become increasingly important. The turbo should therefore be considered as one component of a complete engine package rather than a standalone power upgrade.

TD05H-18G vs TD05H-20G

Choose the TD05H-18G if your target is approximately 200–250HP and you want a strong balance between response and performance.

Choose the TD05H-20G if your target moves into the 250–300HP range and additional compressor airflow is required.

TD05H-20G vs TD05H-16K

The next alternative in the range is the Kinugawa TD05H-16K, aimed at approximately 250–330HP.

Choose the TD05H-20G if:

• Your target is approximately 250–300HP
• You want the established 20G compressor configuration
• You want strong top-end performance while retaining the responsive 7cm TD05H turbine setup
• The vehicle is used for towing, touring or road performance

Consider the TD05H-16K if:

• Your target extends beyond 300HP
• You want greater power headroom
• You are building a more performance-focused 1HD engine

Supporting Modifications

A 250–300HP turbocharger requires an appropriately prepared engine and supporting systems.

Depending on the engine and desired output, supporting upgrades may include:

• Correct fuel-system calibration
• Fuel system upgrades where required
• Upgraded intercooler
• Free-flowing exhaust system
• Improved air intake
• Correct boost-control system
• Boost pressure monitoring
• Exhaust gas temperature monitoring
• Cooling-system checks and upgrades where required
• Engine-condition assessment before tuning

Professional tuning is strongly recommended after installing a performance turbocharger.

What’s Included

• 1 × Kinugawa TD05H-20G turbocharger
• 1 × Oil supply set
• 1 × Water coolant and return set
• 1 × Gasket set
• 1 × Kinugawa balance report with anti-counterfeit tag

Manufacturing & Balancing

The TD05H-20G turbocharger is supplied brand new.

Kinugawa states that the turbocharger receives full balancing using Schenck MBRS equipment. A Kinugawa balance report with anti-counterfeit identification is supplied with the turbocharger.

Installation Notes

• CT26-style 4-bolt turbine inlet
• CT26-style 4-bolt turbine outlet
• Internal wastegate
• Designed to bolt to the compatible factory exhaust manifold and dump pipe
• 3-inch compressor inlet may require intake / air-filter pipe modification
• 1HD-FTE applications should use the appropriate compressor housing configuration
• Oil and coolant lines must be installed correctly
• Turbocharger must be primed with clean engine oil before initial start-up
• Check all intake and exhaust connections for leaks after installation
• Verify boost pressure before operating the engine under full load
• Fuel delivery and boost control must be matched to the engine setup

Professional installation and tuning are strongly recommended.

Frequently Asked Questions

Q1: Which engines does the Kinugawa TD05H-20G fit?
A: Kinugawa lists this TD05H-20G for Toyota Land Cruiser 1HD-T, 1HD-FT and 1HD-FTE 4.2-litre turbo diesel applications.

Q2: How much power can the TD05H-20G support?
A: Kinugawa rates the diesel TD05H-20G configuration for approximately 250–300HP potential crank / flywheel power.

Q3: Does it fit the Toyota Land Cruiser 80 Series?
A: Yes. Kinugawa specifically lists 1991–1997 HDJ80 / HDJ81 / HDJ82 models with the 1HD-T or 1HD-FT engine.

Q4: Does the TD05H-20G fit the 1HD-FTE?
A: Yes. Kinugawa also lists the 1HD-FTE. For 17201-17040 applications including HDJ78, HDJ79, HDJ100 and HDJ105, the appropriate compressor housing configuration should be confirmed.

Q5: What size compressor wheel does the TD05H-20G use?
A: The TD05H-20G compressor wheel measures 52.3 / 68.0mm and is identified by Kinugawa as 20G Trim 59.

Q6: What size turbine wheel does it use?
A: The TD05H turbine wheel measures 49 / 57mm.

Q7: What compressor housing options are available?
A: Anti-Surge and Non Anti-Surge compressor housing configurations are available.

Q8: What compressor wheel options are available?
A: Cast 6+6, Billet 6+6 and Billet 11+0 compressor wheel configurations are available.

Q9: Which compressor wheel is aimed at low-end torque?
A: Kinugawa identifies the Billet 6+6 configuration as the option aimed towards low-end torque.

Q10: Which compressor wheel is aimed at top-end performance?
A: Kinugawa identifies the Billet 11+0 configuration as the option aimed towards stronger top-end speed.

Q11: What turbine wheel options are available?
A: Available configurations are 12 Blades STD, 9 Blades STS and 10 Blades STS 55.

Q12: What size turbine housing does it use?
A: The TD05H-20G uses a 7cm / A/R .49 turbine housing, which Kinugawa describes as providing faster spool than the referenced stock 8cm CT26 housing.

Q13: What size is the compressor inlet?
A: The compressor housing uses a 3-inch inlet.

Q14: Does the intake require modification?
A: On applicable installations, the original compressor inlet / air-filter pipe must be modified or replaced to suit the larger 3-inch compressor inlet.

Q15: Does it bolt to the factory exhaust manifold?
A: On compatible applications, yes. The turbine housing uses the Toyota CT26-style 4-bolt inlet.

Q16: Does it connect to the factory-style dump pipe?
A: On compatible applications, yes. The turbine outlet retains the Toyota CT26-style 4-bolt arrangement.

Q17: What is the standard actuator pressure?
A: The standard actuator is 1.0 bar / 14.7 PSI.

Q18: What alternative actuator pressures are available?
A: Kinugawa offers 0.3, 0.5, 0.8, 1.2, 1.5, 1.7 and 2.0 bar alternatives in addition to the default 1.0 bar configuration.

Q19: Is the TD05H-20G oil or water cooled?
A: Both. The turbo uses oil and water cooling.

Q20: What bearing system does it use?
A: It uses a journal bearing system with a 360-degree performance thrust bearing.

Q21: What comes with the TD05H-20G?
A: The set includes the TD05H-20G turbocharger, oil supply set, water coolant and return set, gasket set and Kinugawa balance report with anti-counterfeit tag.

Q22: What is the difference between the TD05H-18G and TD05H-20G?
A: The 18G uses a 50.3 / 68.0mm compressor and is aimed at approximately 200–250HP, while the 20G increases the compressor inducer to 52.3mm and is aimed at approximately 250–300HP.

Q23: Which turbo should I choose if I want more than 300HP?
A: Consider the TD05H-16K for approximately 250–330HP, or one of the larger options in the Kinugawa range for higher-output builds.

Q24: Do I need professional tuning after installing the TD05H-20G?
A: Yes. Correct fuelling, boost control and calibration are essential, particularly at the 250–300HP level. Professional tuning is strongly recommended.

Why Buy from OFM4x4.CO.UK

• Specialists in Toyota Land Cruiser performance upgrades
• Full six-model Kinugawa 1HD turbo range
• Options covering approximately 150HP through to 420HP builds
• Turbo options for 1HD-T, 1HD-FT and 1HD-FTE engines
• Choice of compressor housing configurations
• Choice of compressor wheel configurations
• Choice of turbine wheel configurations
• Multiple actuator spring pressures available
• Technical assistance when selecting the appropriate turbo configuration
• Supporting Land Cruiser performance upgrades available
• UK-based customer service