General Information

Engine:

The AJ26 power unit is available in 3.2 L and 4.0 L versions, and comprises:

An eight cylinder 90 degree 'V' configuration liquid cooled aluminium cylinder block incorporating 'Nikasil' plated cylinder bores.
Pistons of open-ended skirt design, with two compression and one oil control ring.
Two aluminium cylinder heads, each incorporating two camshafts.
Four valves per cylinder.
Aluminium valve lifters and top mounted shims.
Variable valve timing (VVT) of the inlet camshafts (4.0 L normally aspirated only).
Camshaft covers manufactured from Vinylester.
Aluminium timing cover which accommodates the crankshaft front oil seal.
Single row primary and secondary chains drive the camshafts of each cylinder bank.
An aluminium bed plate, incorporating iron main bearing supports, which accommodate the oil pump pick-up, diverter valve (if fitted) and oil filter.
Main bearings which are grooved in the upper positions and plain in the lower positions. They are manufactured from aluminium/tin material.
A crankshaft with undercuts and rolled fillets for extra strength.
Fracture-split connecting rods in sintered-forged steel.
Brackets bolted to the front of the cylinder block are used to mount all accessories.
A single, seven ribbed vee belt drives the accessories.
An automatic belt tensioner for the front accessory drive, incorporating a wear indicator.
An advanced engine management system incorporating electronic throttle control.
The unit meets the requirements of the CARB OBDII USA legislation.

Ancillary Systems
The ancillary systems, driven by the engine, each have a detailed Description and Operation along with Diagnostic Procedures, and Removal and Installation instructions; refer to the following:

Power Steering Pump - Power Steering Pump
Air Conditioning Compressor - Compressor HVAC
Engine Cooling Pump - Cooling System
Generator - Alternator
Drive belt, idler pulley and automatic tensioner - Drive Belts, Mounts, Brackets and Accessories
Engine starting system - Starting System