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TOMEI

Tomei T550B TURBINE KIT RB26DETT

Tomei T550B TURBINE KIT RB26DETT

SKU: 173102
£3,093.95
£3,093.95
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Drop in ball bearing turbo kit for RB26DETT!

Trusted and proven IHI ball bearing center unit with all new compressor / turbine wheel blades and housing that have been redesigned from scratch to surpass the old journal bearing design at all stage.
Smooth spool from the low range straight up to the high RPM that makes the most of the legendary RB26DETT motor.

PRODUCT INFO

APPLICATION P/N NOTES
RB26DETT
BNR32/BCNR33/BNR34		 173102

FEATURE / SPEC

IHI BALL-BEARING CHRA


The high precision ball bearing center housing rotating assembly made by IHI lowers the friction at pre-spool and dramatically improves the response.
This also contributes for its superior durability.

Bolt-on application

Reinforced actuator
Easy bolt-on installation, no modifications required. The short parts required for the installation, such as hose, gaskets and studs come with the kit. Remarkable stability under high boost.

1 YEAR WARRANTY


The T550B Turbo Kit comes with a 1 year limited warranty after purchase.

■ HOW TO REGISTER
SPEC

  • COMPRESSOR WHEEL DATA
    • TRIM INNER DIA. OUTER DIA. BLADES
    BNR34 STD – APPROX 39.6 APPROX 56.1 6/6
    BCNR33 N1 – APPROX 60.1 APPROX 60.1 6/6
    T550B 60 46.5 60.0 6/6

  • TURBINE WHEEL DATA
    • TRIM INNER DIA. OUTER DIA. BLADES
    BNR34 STD – APPROX 50.5 APPROX 42.0 9
    BCNR33 N1 – APPROX 50.6 APPROX 41.8 11
    T550B 82.0 53.0 48.0 11
     

    DATA
  • Great low-mid characteristic
    • Improved low-mid RPM range for a much better driving experience on the street.Designed to reduce surging and make the power curve as linear with engine RPM as possible for a easy, smooth and stress-free driving.

  • Total set up to enjoy the true performance of RB26
    • Application specific drop-in design that is perfect choice to step-up from the stock turbo.
    T550B is never a huge, peaky competition-only turbo, its design concept is to “enjoy” the RB26 motor.Total set up such as exhaust system makes the combination of the RB26 and T550B turbo even more enjoyable.
    SETTING GUIDE
    ITEM RECOMMENDED SETUP
    PISTONS TOMEI FORGED PISTON KIT
    The stock pistons can only withstand up to approx.
    500PS and forged pistons are required from this power leveland higher.
    The stock pistons will likely fail due to a significantly higher combustion pressure and pre-ignition caused by them if run 1.5kg/cm2 (21.3psi) boost, the designated boost amount to achieve the full performance of T550B Turbo.
    Forged pistons along with reinforced head gaskets are required to make the most of the performance of T550B Turbo.
    CONRODS TOMEI H-BEAM CONRODS
    The stock connecting rods are one of the weak points of the RB26 engine.
    When aiming for more than 550PS, then it is highly recommended to upgrade the conrods to stronger forged conrods.
    BOOST SETTINGS 1.5㎏/cm2(21.3psi） Using a Boost Controller
    At 1.5㎏/cm （21.3psi） of boost, the T550B Turbos is capable of 550PS.
    The stock engine first weak point is the head gasket. So at the very least, the upgrade of the head gasket and manifold gaskets to the TOMEI metal type is highly recommend.With the Metal head gasket, 500PS is achievable with the T550B Turbos with 1.1~1.2㎏/ (15.6~17.1psi) of boost.With the addition of forged pistons, the engine can then safely handle boost up to 1.5㎏/ (21.3psi).
    Boost setting should only be performed when the gear is in 4th or 5th gear as it could cause unexpected high load and a higher boost than desired in higher gears if the setting is performed in a lower gear.
    ACTUATOR SETTINGS Not Required 【The pre-set pressure is 0.9㎏/cm2(12.8psi）】
    The wastegate actuator has been pre-set from factory and no further adjustment is required in most cases.
    It is recommended to use a boost controller along with T440M Turbo which helps to maintain stable boost and allows to adjust overall feeling.
    Adjustment of the wastegate actuator should usually only be performed as a sub-adjustment to help boost controller adjustment.
    TARGET POWER 550PS
    The stock engine can be able to produce 500PS (with 1.1~1.2㎏/ (15.6~17.1psi) of boost).
    The head gasket will have to be upgraded to a Metal type to make it possible.
    If the Pistons are upgraded to Forged Pistons, then it can handle more boost of up to 1.5㎏/ and more power gains are possible.
    CAMSHAFT TOMEI PONCAM TYPE-B or Similar
    The stock camshafts are inadequate to obtain sufficient exhaust pressure when using larger Turbos.Highly recommend to change camshaft when you set over 1.4kg/cm(19.9psi) boost set up.
    It helps change the engines characteristics to help utilize the larger Turbos potential.
    HEAD GASKET CHANGE TO METAL TYPE (RECOMMENDED:TOMEI METAL HEAD GASKET)
    When boost is increased, the combustion pressure is also raised. The Metal Head Gasket helps strengthen your engine to handle more power with the increase in sealing efficiency.
    You choose the right Gasket thickness to suit your desired compression ratio to suit the boost settings that you’d like to run the engine at.
    Another common weak point of the RB26 engine is the gaskets of the intake and exhaust assembly gaskets. So we also recommend these to be upgraded too.
    INJECTOR SIZE 600cc or Higher
    Required injector capacity to suit each setup can be calculated as follows.
    Target Power(HP) x 5.9 ÷ No. of Cylinders = injector volume (cc) required per cylinder.10-20% higher volumed injectors than the amount calculated above is recommended to obtain ideal spray on high rpm range.
    FUEL PUMP 240L/h（Fuel Pres 3kg/cm2）
    Required fuel pump capacity to suit each setup can be calculated as follows.
    Injector volume (cc) x No. of Cylinders x 0.06 = Fuel Pump flow rate (L/h) required for the system.10-20% higher rated fuel pump than the amount calculated above is recommended to stabilize the fuel pressure at all time.
    FUEL PRESSURE REGULATOR Adjustable Regulator required. RECOMMENDED ：TOMEI type-S
    Adjusting fuel pressure is required when fuel pump is upgraded.
    The fuel pressure should usually be adjusted to 3kg/cm2 under the atmosphere pressure.
    AIR FILTER HIGHT FLOW TYPE
    Higher flowing, less restrictive air filter is recommended for a better performance.
    MAF SENSOR nismo MAF / MAF LESS SETUP
    The stock MAF sensor supports up to approx. around 400PS.
    EXHAUST MANIFOLDS TOMEI FULL CAST EXHAUST MANIFOLD
    In order to further improve exhaust efficiency and make the best performance of the turbine kit, we recommend to use the TOMEI full cast exhaust manifold.
    TURBO OUTLET TOMEI FULL CAST OUTLET
    It is important to reduce the secondary exhaust pressure to increase turbo efficiency.
    Highly recommended to use our TOMEI full cast outlet together.
    FRONT PIPE TOMEI Ti RACING TITANIUM FRONT PIPE
    With a layout of two turbos, it is important to use high efficiency front pipe. TOMEI Ti Racing titanium front pipe is recommended.
    METAL CAT For Street ～Circuit :Metal Catalyzer
    For Circuit : TOMEI EXPREME Ti TITANIUM CAT STRAIGHT PIPE
    The exhaust pressure will rise and cause a engine failure if catalyst is damged.
    Please check the condition of the catalyst regularly .
    EXHAUST For Street ～Circuit :TOMEI Ti SPORTS TITANIUM MUFFLER
    For Circuit : TOMEI EXPREME Ti TITANIUM MUFFLER
    A muffler with small exhaust efficiency will not be able to achieve the full performance of the turbine.
    We recommend to use TOMEI titanium muffler series according to vehicle specifications.
    TURBO SUCTION PIPE High Flow Type
    When high boost is applied, deformation may occur with the genuine suction pipe.By replacing high flow type, you can improve the inhalation efficiency.
    INTERCOOLER Large Capacity High Flow Type
    Compressed air from the Turbo goes into the engine.
    This process increases the air temperature and lowers density of oxygen in the same volume of air that also lowers the combustion efficiency.
    Supplying the compressed and well cooled air by a better radiating intercooler increases the combustion efficiency that results a better performance and more power.
    BLOW OFF VALVE STRENGHTENED TYPE (Recirculation Type)
    Without a blow of valve, the compressed air from the turbo when the throttle is suddenly closed would have no where to go and excessively stress the turbo due to a force then generated and tries to stop the turbo from spinning at a very high rpm,The blow off valve protects the turbo, however the stock blow off valve tends to keep releasing boost under high boost and it causes poor response and less peak power.
    It is not recommended to use a vent-to-atmosphere type when MAF sensor is used for engine management as it causes the ECU not being able to obtain the correct air mass readings that leads to improper A/F ratio.
    ENGINE MANAGEMENT Optimize the Engines Setup
    ECU tuning to suit each setup is required to optimize the performance and fuel efficiency as well as to protect the engine.
    PLUG UPGRADE REQUIRED Recommended: 8~9 Heat Range
    The stock spark plugs are too low on their heat value for the increased combustion temperature that may cause preignition and cause the spark plug electrodes to melt down and pistons to seize / erode.Recommended plug heat value is usually 8-9, however, the best setup varies engine to engine depending on usage,condition etc.
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