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E90 6-cylinder VALVETRONIC Engine

This is a collection of pictures of the new upcoming 6-cylinder engine for the new E90 3 Series from BMW. It is reported to make approximately 258HP @ 6600rpm and 221lb-ft torque at 2500 rpm, a notable upgrade to keep competitive with other vehicles in this class. If the torque peak is really that low in BMW's notoriously flat powerband, it will be really fun to drive. It utilizes a new magnesium-aluminum alloy crankcase shaving off about 22 pounds. It makes 12% more power and consumes 12% less fuel. It will also be seen in the new 630Ci, X3, X5, Z4, and more. There are numerous other upgrades to this motor and I will try to go into detail when I can.

Left rear view of entire engine.
Note the lightweight flywheel clutch surface assembly.

Left view of entire engine.
Note the water/oil cooler assembly near oil filter housing.

Front left view of entire engine with transmission.
Note the lack of the water pump pulley.

Another front left view of entire engine.

Front right view of entire engine with transmission.
Note the redesigned exhaust headers.

Right view of entire engine.
Note redesigned valve cover.

Left view of entire engine with transmission.

Cutaway of entire engine.
Note the Valvetronic actuator above the cam train (silver tube with black cap)

Another cutaway close-up of same.
This engine appears to have Direct Fuel Injection.

Detail art on the workings of the VALVETRONIC system.
Note amount of timing adjustment on the geared cam.

Front right view of crankcase block..
Crankcase block is made of magnesium-alumnium alloy.

Right view of crankcase block.

Left rear view of crankcase block with partial cutaway.
Note internal casting cross-hatching for reinforcement and better cooling.

Front right view of crankcase block with partial cutaway.

Close up of crankcase block.
Note the coated cylinders, perhaps Mykasil.

Rear view of crankcase block.
Note starter mounting hole to the left.

View of cylinder head gasket.

Top view of crankcase bedplate.
Note crankshaft bearings.

Top view of intake manifold.
Note the lack of fuel injector ports (due to direct injection).

View of water/oil cooler assembly.
Note coolant bleeder screw on front (due to this now being the highest point for coolant flow on the engine).

View of VANOS camshaft adjusting unit.
Note the degrees of adjustment.

View of camshaft chain drive.
Note that it also drives the oil pump.

View of new hydroformed camshaft with cutaway.
Note that they are hollow for weight and strength.

View of new exhaust manifold with catalytic converters.
Note the lightweight "header" design.

Right view of cylinder head/valvetrain.
Note clean mounting point for exhaust manifold.

Front view of cylinder head/valvetrain with cutaway.
Note progressive valve springs and VALVETRONIC actuator.

Rear view of cylinder head/valvetrain with cutaway.
Note VALVETRONIC is only on the intake side.

Close up view of VALVETRONIC hardware.
Note camshaft to the left and VALVETRONIC adjustment to the right.

Another higher angle view of VALVETRONIC hardware.
Note massive return springs for VALVETRONIC adjuster.

Front right view of cylinder head/valvetrain.
Note VALVETRONIC motor above and both VANOS units to the right.

View of intake manifold with cutaway.
Note throttle body mount and dual length runners with control box.

View of volume controlled oil pump.

View of electric water pump.
Note plastic impeller.

View of cylinder cover.
Note this is made of magnesium.

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