Post date: Jun 25, 2016 2:34:06 AM

Before and after cleaning the No.4 exhaust valve. This valve was covered in thick carbon buildup and was preventing the valve from seating in the closed position. The engine was effectively running on only three out of four cylinders before the rebuild!

Carefully cleaning carbon deposits, with a wire wheel, from the inside of the valve openings in the head.

Front view of engine head showing the intake ports, after cleaning.

Rear view of engine head showing the exhaust ports, after cleaning out carbon and buildup.

Left side of engine head after cleaning. This is where the camshaft timing gear will be mounted.

Bottom view of the engine head after cleaning out carbon buildup. The larger valve ports are the intake and the smaller ports are the exhaust.

Closeup view of the No. 3 and 4 cylinder valve ports. The small circular areas above the valves are the combustion chambers where the diesel fuel is injected and auto-ignition of the fuel begins once the piston reaches the top of the compression stroke. This head is stamped 2222 and each combustion chamber is also stamped with a 2.

Side view of engine block after installing new Toyota AISIN 2C-T oil pump.

AISIN part no. OPT-025