This hybrid turbo for, with a 2.5 TD engine, is based on internal modifications designed to adapt the dair flow and the. compression capacity. Depending on the upgrade package chosen, the modifications involve the MFS compressor wheel, the casings and, for the most advanced upgrade, the turbine section.
Its ‘ plug & play ’ type fitting is designed for for the Hyundai EXCEED and Galloper 2.5 D 100 hp models corresponding to the part numbers listed on this data sheet.
Available preparations — Stage 1, Stage 2 and Stage 3
Stage 1
Compressor wheel: MFS high-flow
Thrust bearing system: 360° thrust bearing
Balancing: High-speed at 150,000 rpm on a Cimat VSR test bench
This modification primarily affects the compressor section. The high-flow MFS impeller is designed to adapt the air displacement capacity d, whilst the 360° thrust bearing helps to distribute the axial forces.
Stage 2
Compressor impeller: High-flow MFS oversized
dintake housing: Reprofiled for accommodate the new impeller oversized
Thrust bearing system: 360° thrust bearing
Balancing: High-speed balancing at 150,000 rpm on a Cimat VSR test bench
Stage 2 combines a oversized compressor impeller with a reprofiled housing d’admission. This modification enables d’accueillir the new impeller and can alter the air flow rate d’air as well as the compressor’s performance.
Stage 3
Compressor impeller: MFS high-flow oversized
d’ intake housing: Reprofiled for accommodate the new impeller oversized
Thrust bearing system: 360° thrust bearing
Turbine impeller: High flow oversized
Turbine casing: Reprofiled for ly to accommodate the new impeller oversized
Balancing: High-speed balancing at 150,000 rpm on a Cimat VSR test bench
This modification is carried out on the compressor and turbine sections. The re-profiling of both housings allows for the installation of the oversized impellers documented at. Its performance depends on the overall engine configuration and the management of the turbocharging system.
What is a hybrid turbo?
A hybrid turbo utilises a turbocharger architecture designed for accommodate internal modifications. Depending on the upgrade stage, these may involve the compressor wheel, the housings, the turbine wheel, the thrust bearing or balancing.
The aim is dadapt the compression capacity and air flow rate dto a specific set-up. A hybrid turbo is not defined solely by the appearance of its compressor wheel: the geometry of the wheels, the machining of the housings and the overall coherence of the unit are crucial.
MFS compressor wheel: standard or ‘ Performance ’?
MFS stands for ‘Milled From Solid’, meaning a wheel machined from a solid block. This technology describes the manufacturing process, but does not in itself guarantee an increase in airflow d. A standard MFS wheel may retain a geometry equivalent to that dof the original.
An MFS wheel Performance can be given a geometry tailored to the intended application. On this product, the wheel shown is made from forged aluminium and is lighter, larger and taller than the d’original. The technical data sheet indicates an additional compression capacity of 15 per cent.
A standard MFS impeller can be just as shiny as an MFS impeller Performance. It is not its appearance that determines its performance, but its geometry and its ability to move more d’air. A higher airflow can contribute to power output when the engine tuning is correctly adapted.
Why does the geometry of the blades influence the air flow rate d?
The compressor impeller draws in and then compresses the air sent to the engine. Its diameter, profile, height, width and the arrangement of its blades influence its aerodynamic behaviour. A suitable geometry can move more dair under certain operating conditions.
The result also depends on the housings, the turbine wheel, the boost pressure and the engine set-up. A larger turbine wheel therefore does not automatically guarantee better performance and may alter the response time as well as the range dof optimal operation.
Reliability and balancing of the hybrid turbo
The 360° bearing thrust ring fitted to all three stages helps to distribute axial forces around the shaft. It must operate with adequate lubrication and does not protect the turbocharger against incorrect fitting or d’oil supply.
The rotor is balanced at high speed, up to 150,000 rpm, on a Cimat VSR test bench. This process aims to minimise vibrations and mechanical stresses during operation.
Engine remapping and preparation
The operation dof a hybrid turbocharger may require adjustments to the engine mapping, boost pressure, fuel injection, exhaust system and cooling. The clutch, transmission and other components must also be checked in accordance with the vehicle’s configuration.
The wastegate must be adjusted when remapping the ECU. Simply fitting a hybrid turbo ddoes not, on its own, guarantee a power gain without appropriate preparation.
Turbo part numbers
OEM part numbers
28200-42520
2820042520
Manufacturer part numbers
49177-07503
4917707503
Compatible vehicles and applications
Hyundai
EXCEED 2.5 D –100 hp
Engine variants 2.5 D — start in 1996, month unspecified — end unspecified
Engine code: not specified
Galloper 2.5 D — 100 hp
Engine 2.5 D — started in 1996, month unspecified — end unspecified
Engine code: not specified
Additional technical specifications
Product type: Hybrid Turbo
Specified engine variants: 2.5 TD
Power Applications: 100 hp
Documented period: From 1996
Installation: Configuration plug & play, without modification to the mounting
Fitting advice
⚠️ WARNING — IMPORTANT BEFORE INSTALLATION
Identify and rectify the cause of the previous fault before d’install the turbo.
Check the lubrication circuit, the oil supply and return lines, and ensure the lines are clean d.
Check the intake and ensure there are no foreign objects.. Carry out the priming procedure in accordance with the applicable recommendations and follow the manufacturer’s instructions.
A lubrication fault that is not rectified may lead to the turbocharger failing again.
How do you identify the correct turbo?
Check the part number marked on the original turbo dand compare it with the OEM and manufacturer part numbers in this data sheet. Also check the make, model, version, engine type, power output at hp, the production period and the engine code where available.
An identical engine specification does not always guarantee compatibility: there may be several different set-ups depending on the generation, body style or production period.
⚠️ Check your turbo’s part numbers
Before ordering, compare the part number marked on your original turbo d with the part numbers listed in this data sheet. An identical engine specification does not always guarantee compatibility.
If you are unsure about the identification, please contact our team with the full part number taken from your turbo.
