The EJ251 and EJ252 engines had a hollow-type single overhead camshaft SOHC per cylinder bank.
The EJ251 and EJ252 engines had a compression ratio of 10.
Like other EJ Phase II engines, the crankshaft thrust bearing was positioned at the rear of the crankshaft to reduce the transfer of natural engine frequencies to the transmission and driveline.
Subaru EJ251 and EJ252 engines Model Engine Trans.
Injection and ignition The EJ251 and EJ252 engines had multi-point sequential fuel injection and centrally located spark plugs.
Other features of the pistons included solid-type piston skirts, flat top combustion surfaces and reduced top land to cylinder clearance.
For the EJ251 and EJ252 engines, the four valves per cylinder were actuated by shim-less type buckets i.