Does anyone know what the torque specs are for a 2006 subaru impreza engine to trans bolts? I have been looking, but cannot find any specs.

SOURCE: Engine Bolt Torques- 2005 Chevy Impala/3400 Engine

Head Bolts
Step one 37 ft lbs then tignten 120 degrees more

Rocker arms
Step one 11 ft lbs then tighten 90 degresss more

Upper intake
89 inch lbs
Lower intake
132 inch lbs

SOURCE: 87 samurai bolt torque specs for engine

The haynes book is not recommended since there are numerous mistakes and they still will not update. One of the biggest is the firing order.

The factory service manual is the only way to go.

Head bolts - 46 - 50.5 lbs (there is an order sequence for the bolts)

Intake & exhuast manifolds- 13.5 - 20 lbs

Flywheel - 41.5 - 47 lbs

Clutch cover - 13.5 - 20 lbs

SOURCE: Head bolt torque specs needed for 96 tbird 3.8

Head bolts are torque to yeild so you MUST use new bolts.
Tighten cylinder head retaining bolts in numerical sequence in three steps as follows:

1. 20 Nm (15 lb-ft).

1. 40 Nm (30 lb-ft).

1. 50 Nm (37 lb-ft)

• Tighten to 40-50 Nm (30-37 lb-ft).
• Rotate an additional 175-185 degrees.
• Go to next bolt in sequence.

• Tighten to 20-30 Nm (15-22 lb-ft).
• Rotate an additional 175-185 degrees.
• Go to next bolt in sequence.

SOURCE: torque specs for toyota tercel

Hello vienotkelly: The correct Main bolt torque is 42 foot pounds. The connecting rods torque to 29 foot pounds. The torque sequence for the head bolts and the correct way to tighten the bolts are attached to this reply. Thak You for using FixYa. Roger

SOURCE: torque specs for 1998 tercel 1.5L

Main Bearing Cap Torque-42 Ft. Lbs.
Head Bolts Step 1-33 Ft. Lbs. Step 2- Additional 90 Degrees
Rod Bearing Nuts-29 Ft. Lbs.

Hope this helps