EJ SINGLE SCROLL ARMS M7760 TURBINE KIT for EJ20 & EJ25
PRODUCT
APPLICATION
PART #
MSRP (USD)
ARMS M7760
Turbine Kit
EJ20/25
173016
$1,780.00
KIT CONTENTS
M7760 Turbo, Water Lines, Oil Return Lines, Gaskets and bolts
* Click the image enlarge.
A CRUCIAL STEP IN EJ TUNING IS THE TURBO UPGRADE!
The ARMS M7760 is the largest bolt-on turbo possible that the engineers can fit into the limited space of the EJ engine. Despite the size, the internals of the turbocharger speaks other wise; extracting the most and finest efficiency from its design. The end result is a turbo that maintains the best characteristics of the EJ engine with the added benefit of an extended power band to the high RPM region. The crucial step in tuning the EJ is the turbocharger upgrade where the increase in overall performance can be acquired.
TYPE
COMPRESSOR WHEEL
COMPRESSOR HOUSING
TURBINE WHEEL
TRIM
Inlet Dia (mm)
Exit Dia (mm)
Inlet Dia (mm)
Exit Dia (mm)
TRIM
Inlet Dia (mm)
Exit Dia (mm)
ARMS
M7760
60
52.6
68.0
53.5
42
77
56.0
49.1
COMPRESSOR MAP
ARMS M7760 Compressor Flow Map
STOCK COMPARISON
ARMSM7760
EJ20 (NORMAL)
EJ25 (NORMAL)
Compressor Wheel Outer Diameter
68mm
60mm
60mm
Turbine Wheel Outer Diameter
56mm
53mm
53mm
EJ25 MODIFICATION STAGES
The horizontally opposed EJ25 is known for being troublesome in terms of modifications, especially when it comes to swapping the camshafts and engine internals. The engine assembly is required to be taken out of the vehicle in order to reach inside the engine. For the end user, it is most effective to first modify the intake system considering the high degree of difficulty and expense involved in fully tuning a boxer. Tomei Powered recommends a turbocharger upgrade after the intake system has been modified.
STOCK
Power drop above 5,500 RPM
328 HP
EXPREME Exhaust Manifold
Simple bolt-on exhaust manifold upgrade
345 HP
ARMS M7760
Despite size limit, most efficient turbo design achieved
369 HP
PONCAMS
Increased intake air volume with most ideal duration
385 HP
Head Modification
Air intake restriction eliminated, objective cleared.
400 HP
* EJ25 is equipped with a restrictive head design resulting in the air intake to be maxed out
at 6000 RPM. Tomei Powered has utilized a modified EJ207 head, boring out the
combustion chamber diameter to match the cylinder diameter; all done to achieve superb results.
Head Intake Port Comparison
EJ207 Combustion Chamber Modification
REPLACEMENT KIT
When the turbine has been removed for maintenance or for repairs we have also made replacement parts easy to obtain without buying a whole kit again.
