Subaru EZ36 3.6L Engine: Specs, Problems, Reliability

Subaru EZ36 3.6L Engine: Specs, Problems, Reliability. The EZ36 engine was offered in 2007 as the new power unit for Subaru Tribeca (the EZ36D version). This engine became the largest displacement engine available for Subaru models. The EZ36 replaced the EZ30 engine in 2009 altogether.

Subaru EZ36 3.6L Engine Specs, Problem

The engine got the bolstered aluminum cylinder block. The cast iron sleeves have reduced thickness 1.5 mm instead 2.0 mm in the EZ30. The cylinder block height coincides 202 mm. The engine has asymmetric connecting rods (125 mm length). These changes allowed getting more significant displacement – from 3.0 to 3.6 liter. The new aluminum cylinder heads have four valves per cylinder and two camshafts.

Subaru EZ36 3.6L Engine: Specs, Problems, Reliability

Subaru EZ36 3.6L Engine: Specs, Problems, Reliability

Each camshaft is equipped with variable valve timing system AVCS (Dual AVCS). The combustion chambers in the cylinder heads were redeveloped. The AVLS system, which changes valve lift by engine revs, doesn’t exist in this engine. The EZ36 uses three chains. Engineers upgraded the exhaust manifolds (headers) and the engine cooling system.

Subaru EZ36 3.6L Engine Problems and Reliability

This 3.6-liter engine has just about the same problems, which are identified the 3.0 l EZ30 engine. But we can say what the EZ36 is more reliable than its predecessor. The engine life is about 180,000 miles (300,000 km).

Subaru EZ36 3.6L Engine specs

Manufacturer Gunma Oizumi Plant
Production years 2007-present day
Cylinder block material Aluminum
Cylinder head material Aluminum
Fuel type Gasoline
Fuel system Fuel injection
Configuration Boxer (Flat-6)
Number of cylinders 6
Valves per cylinder 4
Valvetrain layout DOHC
Bore, mm 92.0
Stroke, mm 91.0
Displacement, cc 3629
Type of internal combustion engine Four-stroke, naturally aspirated
Compression Ratio 10.5
Power, hp 260/6000
Torque, lb ft 247 (335 Nm)/4400
Engine weight 401 lbs (182 kg)
Firing order 1-6-3-2-5-4
Engine oil weight 0W-30, 5W-30, 5W-40, 10W-30, 10W-40
Engine oil capacity, liter 6.3
Oil change interval, mile 9,000
Applications Subaru Legacy, Subaru Outback, Subaru Tribeca
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