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Replacing Subaru 2.5l sohc head gaskets and resurfacing the cylinder heads at home

happywrenching · 34K views · 33:37

Skill Level

Advanced

Time Required

Multi-day

Estimated Cost

$200–500

Equipment

Subaru 2.5L SOHC Engine (2013 Legacy/2015-2021 Outback)

Permit Required

No

Tools Needed

Socket set, Wrench set, Torque wrench, Gasket scraper, Head gasket set, Cylinder head resurfacing tools, Engine hoist, Jack stands, Drain pan
In this video I will replace the head gaskets on this Subaru non-turbo 2.5l engine. This engine came out of a 2013 Subaru Legacy 2.5i which had around 160,000 miles on it. You can watch how I removed the engine using this link - https://youtu.be/21FJO4DohkE. This is a long video and it was difficult to go into every detail without prolonging the video even more. I tried to do my best to cover all of the steps during this job. Resurfacing the cylinder heads before putting everything back together is the key to having the new head gaskets last a long time. The best thing is to take them to a machine shop but resurfacing them at home using the method that I show later in the video can also be effective. In addition to the head gaskets there are several more gaskets and seals that I will be replacing during this job. Finally I will install a new aisin timing belt kit. Here is a list of all the parts that I replaced - MLS Head gasket (2x) - 11044AA770 Cylinder head bolts (black - 12x) - can't find part number for these new bolts Exhaust manifold gasket (2x) - 44022AA020 Intake manifold gasket (2x) - 14035AA540 Valve cover gasket (2x) - 13294AA070 Spark plug seals (4x) - 10966AA030 Crankshaft pulley bolt - 12369AA011 Subaru Coolant (need 1.5 gallons) - SOA868V9270 Rear main seal - 806786040 Spark Plug (4x) - NGK 3764 Coolant Crossover pipe o-rings - felpro 36024 Timing belt kit - Aisin TKF006 Tightening torque values - Intake manifold bolts - 25 N·m (2.5 kgf-m, 18.4 ft-lb) Timing belt cover - 5 N·m (0.5 kgf-m, 3.7 ft-lb) Timing belt idlers - 39 N·m (4.0 kgf-m, 28.8 ft-lb) Timing belt tensioner - 39 N·m (4.0 kgf-m, 28.8 ft-lb) Timing belt tensioner bracket - 24.5 N·m (2.5 kgf-m, 18.1 ft-lb) Valve cover bolts - 6.4 N·m (0.7 kgf-m, 4.7 ft-lb) Coolant crossover pipe bolts - 6.4 N·m (0.7 kgf-m, 4.7 ft-lb) Water pump bolts - 12 N·m (1.2 kgf-m, 8.9 ft-lb) Thermostat cover bolts - 12 N·m (1.2 kgf-m, 8.9 ft-lb) AC compressor bolts - 26.5 Nm (2.70 kgf-m, 19.5 ft-lb) Exhaust manifold to cylinder head - 30 N·m (3.1 kgf-m, 22.1 ft-lb) Engine to Transmission bolts - 50 N·m (5.1 kgf-m, 36.9 ft-lb) https://www.happywrenching.com Music in this video - Wanted by Purrple Cat | https://purrplecat.com/Music promoted by https://www.chosic.com/free-music/all/Creative Commons CC BY-SA 3.0https://creativecommons.org/licenses/by-sa/3.0/