Kinugawa CT26-GT3071R Hybrid Turbo for Toyota Land Cruiser 80 HDJ80 / HDJ81 / HDJ82 1HD-T / 1HD-FT 4.2 Diesel

The Kinugawa CT26-GT3071R Hybrid Turbocharger provides a substantial performance upgrade for the Toyota Land Cruiser 80 Series HDJ80, HDJ81 and HDJ82 with the 1HD-T or 1HD-FT 4.2-litre turbo diesel engine, while retaining the convenient stock-type Toyota CT26 mounting arrangement.

Positioned as the OFM4x4 Hybrid Tier – Performance Upgrade, this turbo bridges the gap between a conventional CT26 replacement and the larger TD05H / TD06H Ultimate Tier performance turbochargers.

The key difference is the compressor. Instead of the much smaller stock-size compressor used by a conventional CT26, the hybrid incorporates a significantly larger 53.11 / 71.0mm GT3071R or GTX3071R-style billet compressor wheel inside a stock-type bolt-on compressor housing.

This provides considerably greater airflow potential while retaining the Toyota CT26-style turbine housing, 4-bolt inlet, 4-bolt outlet and internal wastegate arrangement.

Two compressor configurations are available: the GT3071R Billet 6+6, optimised towards low-end torque, and the GTX3071R Billet 11+0, intended for stronger top-end performance.

Vehicle Compatibility: Toyota Land Cruiser 80 Series HDJ80 / HDJ81 / HDJ82

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

Model Years: 1990–1997

Replaces / Uses Factory CT26 Fitment: Toyota turbo references 17201-17010 / 17201-17020 / 17201-17030

Hybrid Tier – Performance Upgrade

The CT26-GT3071R occupies an important position within the OFM4x4 Kinugawa Land Cruiser turbo range.

It is designed for owners who want more performance than a stock replacement CT26 but would prefer to retain the convenient CT26-style mounting arrangement rather than move immediately to a larger TD05H or TD06H turbocharger.

This makes the hybrid particularly attractive for:

• Modified Land Cruiser 80 Series vehicles
• 1HD-T and 1HD-FT performance builds
• Fast-road and touring vehicles
• Heavy overland builds requiring improved engine performance
• Towing applications where additional torque is required
• Owners wanting greater airflow without moving directly to a TD05H conversion
• Vehicles with upgraded intercooling, exhaust and fuelling

Land Cruiser 1HD Turbo Range – Budget, Hybrid & Ultimate Tiers

OFM4x4 offers the complete Kinugawa turbo progression for Toyota Land Cruiser 1HD diesel engines, allowing the turbocharger to be selected according to the vehicle's intended use and performance target.

Vehicle Compatibility

Replacement / Factory Turbo References

Kinugawa lists this hybrid turbocharger for vehicles originally using the following Toyota turbocharger references:

• 17201-17010
• 17201-17020
• 17201-17030

Vehicles that have previously been modified, converted or fitted with a different turbocharger should always be checked before ordering.

Technical Specifications

Available Configuration Options

The CT26-GT3071R Hybrid can be configured around the intended driving style. The two major selectable areas are the compressor wheel and turbine wheel, while alternative actuator pressures are also available.

Compressor Housing

Bolt-On Stock-Type Compressor Housing

One of the main advantages of the CT26-GT3071R Hybrid is that the significantly larger performance compressor is incorporated into a stock-type bolt-on compressor housing.

This allows the turbo to retain the convenient CT26-style installation concept while providing substantially greater compressor capacity than the OEM-size CT26.

Compressor Wheel Options

Two billet compressor configurations are available:

• GT3071R Billet 6+6 – recommended for stronger low-end torque
• GTX3071R Billet 11+0 – recommended for greater top-end performance

Both compressor options measure 53.11mm inducer / 71.0mm exducer and incorporate an extended tip measuring approximately 74.07mm.

GT3071R Billet 6+6 – Low-End Torque

The GT3071R Billet 6+6 is the option to consider where low and mid-range response are important.

This configuration is particularly attractive for a Land Cruiser used for:

• Road driving
• Touring
• Overlanding
• Towing
• Heavy vehicle builds
• Off-road use where usable mid-range torque is more important than maximum top-end performance

Kinugawa specifically positions the 6+6 configuration towards low-end torque.

GTX3071R Billet 11+0 – Top-End Performance

The alternative GTX3071R Billet 11+0 uses the same fundamental 53.11 / 71.0mm wheel dimensions but a different blade configuration.

Kinugawa positions this compressor towards top-end speed and performance.

It is therefore the more appropriate option where the engine has supporting modifications and the objective is stronger airflow and performance higher in the RPM range.

Turbine Wheel Options

Two turbine wheel configurations are available:

• 10-Blade STD
• 9-Blade STS

Both use a 51.9 / 67.9mm Inconel 713 turbine wheel.

The STD option provides the conventional turbine configuration, while the STS alternative uses Kinugawa's different blade arrangement for customers looking to alter turbine flow characteristics.

Spring / Actuator Pressure

The standard actuator setting supplied by Kinugawa is:

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: The actuator should be selected to suit the engine specification, boost-control strategy and intended boost pressure. A stronger actuator alone does not safely increase engine power.

Cooling Type

Oil & Water Cooled

The centre housing uses engine oil for bearing lubrication together with engine coolant for additional thermal management.

53.11 / 71mm Performance Compressor

The compressor upgrade is what fundamentally separates the CT26-GT3071R Hybrid from a conventional replacement CT26.

At 53.11 / 71.0mm with a 74.07mm extended tip, the billet compressor is considerably larger than the compressor used in the OEM-style CT26 replacement.

The larger compressor provides substantially greater airflow potential, making the hybrid suitable for modified engines requiring more air than the standard turbo can efficiently supply.

GT3071R vs GTX3071R – Which Compressor Should I Choose?

7cm / A/R .49 CT26 Turbine Housing

The hybrid retains a 7cm / A/R .49 Toyota CT26-style turbine housing.

Kinugawa describes the 7cm nozzle area as providing faster spool response than the referenced stock 8cm housing.

This smaller turbine housing is particularly useful in a hybrid application because it helps maintain responsive turbine behaviour while the larger GT3071R / GTX3071R compressor provides increased airflow capability.

CT26 Bolt-On Installation

The turbo retains the key Toyota CT26 exhaust-side mounting characteristics:

• Toyota CT26 4-bolt turbine inlet
• Toyota CT26 4-bolt turbine outlet
• Internal wastegate
• Stock-type bolt-on turbine housing
• Stock-type bolt-on compressor housing

This is the major reason the CT26-GT3071R works so well as an intermediate upgrade between a conventional CT26 and the larger Ultimate Tier TD05H / TD06H turbochargers.

Journal Bearing Construction

The CT26-GT3071R Hybrid uses a journal-bearing centre section.

Journal bearings provide a robust and proven solution for diesel 4x4 applications when supplied with clean oil at the correct pressure and with an unrestricted oil return.

Oil & Water Cooling

The turbocharger uses both oil lubrication and water cooling.

During installation, the turbo oil feed, oil drain and coolant lines should be carefully inspected. Reusing contaminated or restricted lines after a previous turbocharger failure can cause premature damage to the replacement turbo.

CT26 OEM Replacement vs CT26-GT3071R Hybrid

For a standard Land Cruiser requiring a replacement for a worn factory turbo, consider the Kinugawa CT26 OEM Replacement Turbo.

If additional performance is the objective without immediately moving to a TD05H or TD06H setup, the CT26-GT3071R Hybrid is the logical next step.

When Should You Move to the Ultimate Tier?

The CT26-GT3071R provides the convenience of a CT26-style installation with a substantially larger compressor, but some builds require an entirely different level of airflow and turbine capacity.

For higher horsepower targets, OFM4x4 offers six Kinugawa Ultimate Tier options:

• TD05H-16G – Up to 200HP – responsive daily-driver performance
• TD05H-18G – 200–250HP – popular balanced performance upgrade
• TD05H-20G – 250–300HP – higher-output towing and performance
• TD05H-16K – 250–330HP – quick-spooling high-power option
• TD05H-18K – 350–380HP – extreme-performance builds
• TD06H-25G – 380–420HP – competition-level and maximum-performance builds

Supporting Modifications

A larger turbocharger cannot safely produce its full potential without the rest of the engine being able to support the increased airflow.

Depending on the intended performance level, supporting upgrades may include:

• Intercooler upgrade
• Free-flowing exhaust system
• Improved intake system
• Fuel-system upgrades
• Appropriate boost control
• EGT monitoring
• Boost monitoring
• Engine tuning and fuel calibration
• Cooling-system improvements where required

The correct setup depends on whether the vehicle uses the 1HD-T or 1HD-FT and on the intended boost, fuelling, load and performance target.

What’s Included

• 1 × Kinugawa CT26-GT3071R / GTX3071R Hybrid Turbocharger
• 1 × Turbo installation kit
• 1 × Kinugawa balance report with anti-counterfeit tag

Installation Notes

• Designed for compatible Toyota Land Cruiser 80 Series 1HD-T / 1HD-FT applications
• Stock-type bolt-on compressor housing
• Stock-type CT26 turbine housing
• Toyota CT26 4-bolt turbine inlet
• Toyota CT26 4-bolt turbine outlet
• Internal wastegate
• Journal-bearing centre section
• Oil and water cooled
• Inspect the turbo oil feed and return system before installation
• Inspect coolant lines and fittings
• Clean the intake and intercooler if the previous turbo failed
• Prime the turbocharger with clean engine oil before first start
• Check boost pressure after installation
• Check the engine calibration and fuelling for the upgraded compressor
• Monitor exhaust gas temperature on modified/high-load applications

Professional installation and appropriate engine tuning are strongly recommended.

Frequently Asked Questions

Q1: Which vehicles does the Kinugawa CT26-GT3071R Hybrid fit?
A: Kinugawa lists Toyota Land Cruiser 80 Series HDJ80, HDJ81 and HDJ82 applications with the 1HD-T or 1HD-FT 4.2-litre turbo diesel engine.

Q2: What model years are listed?
A: The manufacturer lists the application for 1990–1997 Land Cruiser 80 Series 4.2-litre 1HD diesel vehicles.

Q3: Is this suitable for the 1HD-T?
A: Yes. The Toyota 1HD-T 4.2 diesel is a primary application for this hybrid turbo.

Q4: Is it suitable for the 1HD-FT?
A: Yes. Kinugawa also lists the 1HD-FT application.

Q5: Is the 1HD-FTE listed for this CT26-GT3071R?
A: No. This particular hybrid product is listed by Kinugawa for 1HD-T / 1HD-FT Land Cruiser 80 applications. The Ultimate Tier range includes separate turbo options that are also listed for 1HD-FTE applications.

Q6: Which original Toyota turbo references does it correspond with?
A: Kinugawa lists Toyota references 17201-17010, 17201-17020 and 17201-17030.

Q7: What compressor wheel options are available?
A: Two billet options are available: GT3071R 6+6 and GTX3071R 11+0.

Q8: What size is the compressor wheel?
A: Both configurations measure 53.11 / 71.0mm with an extended tip diameter of approximately 74.07mm.

Q9: Which compressor is better for low-end torque?
A: Kinugawa positions the GT3071R Billet 6+6 configuration towards low-end torque.

Q10: Which compressor is better for top-end performance?
A: Kinugawa positions the GTX3071R Billet 11+0 configuration towards top-end performance.

Q11: Which option would you recommend for touring or towing?
A: Where responsive low and mid-range torque is the priority, the GT3071R Billet 6+6 is generally the more appropriate configuration.

Q12: What turbine wheel does it use?
A: It uses a 51.9 / 67.9mm Inconel 713 turbine wheel.

Q13: What turbine wheel options are available?
A: Customers can choose between 10-Blade STD and 9-Blade STS turbine configurations.

Q14: What turbine housing does it use?
A: It uses a 7cm / A/R .49 stock-type CT26 turbine housing.

Q15: Why does Kinugawa use a 7cm housing?
A: Kinugawa describes the 7cm nozzle area as providing faster spool response than the referenced stock 8cm housing.

Q16: Does it retain the Toyota CT26 exhaust mounting arrangement?
A: Yes. It uses Toyota CT26 4-bolt turbine inlet and outlet connections.

Q17: Does it have an internal wastegate?
A: Yes. The CT26-GT3071R uses an internal wastegate.

Q18: Is the compressor housing bolt-on?
A: Yes. Kinugawa describes the compressor housing as a bolt-on stock-type design.

Q19: What bearing type does it use?
A: It uses a journal-bearing system.

Q20: Is the turbo oil or water cooled?
A: Both. The centre housing uses engine oil for lubrication and engine coolant for additional thermal management.

Q21: What actuator pressure is standard?
A: Kinugawa supplies a 1.0 bar / 14.7 PSI actuator as the default configuration.

Q22: Are alternative actuator pressures available?
A: Yes. Kinugawa lists 0.3, 0.5, 0.8, 1.2, 1.5, 1.7 and 2.0 bar alternatives in addition to the standard 1.0 bar actuator.

Q23: Is this better than the standard CT26 replacement?
A: It depends on the objective. The standard CT26 is the better choice for restoring stock-style performance. The CT26-GT3071R Hybrid is designed for customers specifically seeking increased airflow and performance.

Q24: Why choose this instead of a TD05H turbo?
A: The hybrid retains the convenient stock-type CT26 compressor and turbine housing arrangement while incorporating a much larger performance compressor. It therefore provides an intermediate step between OEM replacement and a more extensive TD05H or TD06H performance build.

Q25: Does the engine need tuning?
A: Appropriate engine setup and tuning are strongly recommended. The larger compressor can supply considerably more air than the standard CT26, but safe power depends on boost pressure, fuelling, EGT, intercooling and the overall engine configuration.

Q26: What comes with the turbocharger?
A: Kinugawa lists the turbocharger, turbo installation kit and balance report with anti-counterfeit tag as included.

Why Buy from OFM4x4.CO.UK

• Specialists in Toyota Land Cruiser performance upgrades
• Complete Kinugawa Land Cruiser 1HD turbo range
• Budget, Hybrid and Ultimate Tier options
• GT3071R and GTX3071R compressor configurations available
• STD and STS turbine configurations
• Multiple actuator pressure options
• Turbo solutions for road, touring, towing and high-performance builds
• Technical assistance when selecting the correct turbo configuration
• Supporting Land Cruiser performance upgrades available
• UK-based customer service