When did the Mitsubishi 4B11 engine come out?
It was first introduced for Mitsubishi Lancer 10 and EVO X in 2007. The manufacturer was forced to abandon the proven 4G6 engine due to the new, more stringent emission requirements. The 4B11 now is an all-aluminum engine with the newest electronic systems available for the last 4G6 generation.
How does the Mitsubishi 4B1 engine reduce weight?
To lower the engine’s weight, Mitsubishi used die-cast aluminium for the cylinder block, plastic for the cylinder head cover and intake manifold, and stainless steel for the exhaust manifold. The engine features a compact balance shaft module with an integrated oil pump. A silent chain is used to drive the camshafts.
What kind of engine does a Mitsubishi Evo have?
The new 2.0-liter turbo engine replaced the 4G63T engine. It is the first EVO engine with a die-cast aluminum cylinder block and cast iron liners/sleeves. The engine block has a semi-closed deck design (unlike the cast iron block with a solid-deck design of the 4G63). The engine block height is a 220 mm; the cylinder spacing is a 96 mm.
How does MIVEC work on a Mitsubishi 4B11?
The engine now uses a timing chain to drive both camshafts instead of a timing belt. The Mitsubishi’s MIVEC system (Mitsubishi Innovative Valve-timing Electronic Control) is applied to both the intake and exhaust camshafts.
It was first introduced for Mitsubishi Lancer 10 and EVO X in 2007. The manufacturer was forced to abandon the proven 4G6 engine due to the new, more stringent emission requirements. The 4B11 now is an all-aluminum engine with the newest electronic systems available for the last 4G6 generation.
The new 2.0-liter turbo engine replaced the 4G63T engine. It is the first EVO engine with a die-cast aluminum cylinder block and cast iron liners/sleeves. The engine block has a semi-closed deck design (unlike the cast iron block with a solid-deck design of the 4G63). The engine block height is a 220 mm; the cylinder spacing is a 96 mm.
How big is the intake valve on a Mitsubishi 4B11?
The diameter of the intake valves is 35.0 mm; the diameter of the exhaust valves is 29.0 mm; the valve stem diameter of both valves is 5.5 mm. The third-gen 4G63 cylinder head had 20-percent better intake airflow over the 4B11 head due to smaller higher-velocity ports.
The engine now uses a timing chain to drive both camshafts instead of a timing belt. The Mitsubishi’s MIVEC system (Mitsubishi Innovative Valve-timing Electronic Control) is applied to both the intake and exhaust camshafts.