Tomei Powered ARMS M7960 - Manual (Page 21)

SPECIFICATIONS
SETUP GUIDE
The M7960 when boosted at around 1.6 kg / ㎠ (22.8psi) can deliever 400ps on 100 Octane pump
gas (As tested in Japan). Please note that the maximum output depends on the state of the car.
If the engine internals are completely stock, then the max power it can handle is 330ps.
Have the car running in 4th or 5th gear when you're making changes to the boost setting. As when
it is changed whilst in lower gear, the higher load in lower gear will result in the wrong boost
settings. (It’s not unusual to see on some occasions when the rpm reaches its peak and the
boost drops).
The actuator has been pre-set at our factory, so there is no need for any additional adjustments.
But it is best to have a boost controller installed to make the required adjustments on the day
when driving conditions demand certain performance conditions.
A significant impact on performance will show when upgrading the Camshafts, Suction Intake,
Exhaust Manifolds, Outlet Pipe, Catalyzer and Muffler System. With stock Cams, exhaust manifold,
outlet, boost of 1.0～1.1 kg / ㎠ (14.2～15.6 psi) can get about 350ps. If all of the above is upgraded
TARGET POWER
TUNED ENGINE
Not Required {Pre-set at 0.9㎏/㎠ (12.8psi)}
TUNED ENGINE
400PS
COMPRESSOR WHEEL TURBINE WHEEL
POWER
TRIM INNER DIA. EXIT DIA. TRIM OUTER DIA.
400PS
EXIT DIA.
STOCK CONDITION 1.0～1.1㎏/㎠(14.2～15.6psi) On Boost Controller
TUNED ENGINE 1.6㎏/㎠(22.8psi) On Boost Controller
78 61.0mm 54.0mm 60 52.6mm 68.0mm
STOCK CONDITION
STOCK CONDITION 330PS
ACTUATOR
ITEMS RECOMMENDED SETUP
BOOST SETTING
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to the TOMEI items, with set Boost of 1.6 kg / ㎠ (22.8psi): 400ps is possible.
STOCK
Forged Piston
The stock Pistons in the G4KF are capable to cope with up to 330ps. However, with a drop in pressure
or engine compression, this increases the unwanted stress levels in the stock Pistons. So
upgrading to Forged Pistons are highly recommended.
The stock G4KF conrods are fine for up to 330ps, however that depends on the state of the engine
as well.
The standard camshafts cannot provide enough performance flow & pressure, so this limits your
chances of utilizing larger turbines. But once you upgrade your camshafts, you'll be able to run
larger turbines with ease.
Higher combustion pressures and boosts increase. When the G4KF boost is set with the stock head
gasket. It is highly recommended to upgrade the Head Gasket for increased sealing which will
enhance performance when running higher boost. When changing the thickness of the Head Gasket,
your compression ratio will change. You'll have to check all variables, Combustion chamber
volume, and block and head surface amount and so on to get the the correct compression ratio.
550cc
650cc Or Higher
To work out the injector sizes you need you use this formula,
Target Horsepower x 5.9 ÷ No. of Cylinders = the cc flow amount per cylinder required.
Take into account that you will run up to 80%~90% of the injector’s capacity.
TUNED ENGINE Conrods Recommended: H-Beam Conrod
INJECTORS
STOCK CONDITION
TUNED ENGINE
TOMEI PONCAM Best Suited
PISTONS
TUNED ENGINE
STOCK CONDITION
CONNECTING RODS
STOCK CONDITION STANDARD
CAMSHAFTS
STOCK CONDITION
TUNED ENGINE
HEAD GASKET
STOCK CONDITION STANDARD
TUNED ENGINE Upgrade Recommended: METAL HEAD GASKET
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