Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2007 Mazda Mazdaspeed3 L4-2.3L TurboFACTORY OEM SERVICE PROCEDURE
Tightening Torques
Cylinder Head
Measure the length of each cylinder head bolt.
Replace any cylinder head bolts that exceed the maximum length.
Cylinder head bolt length
Standard 144.7 - 145.3 mm (5.697 - 5.720 in)
Maximum 146 mm (5.74 in)
Tightening procedure
1st step 3.0 - 11 Nm (31 - 112 kgf-cm, 27 - 97 in-lbf)
2nd step 13 - 17 Nm (133 - 173 kgf-cm, 116 - 150 in-lbf)
3rd step 43 - 47 Nm (4.4 - 4.7 kgf-m, 32 - 34 ft-lbf)
4th step 88° - 92°
5th step 88° - 92°
Camshaft Bearing
Install the camshaft caps and temporarily tighten the camshaft cap bolts evenly in two or three passes, and then tighten the camshaft cap bolts using the following two steps, in the order shown in the figure.
Tightening procedure
1st step 5.0 - 9.0 Nm (51 - 91 kgf-cm, 45 - 79 in-lbf)
2nd step 14 - 17 Nm (1.5 - 1.7 kgf-m, 11 - 12 ft-lbf)
Crankshaft Pulley Lock Bolt
Tightening procedure
1st step 96 - 104 Nm (9.8 - 10.6 kgf-m, 70.9 - 76.7 ft-lbf)
2nd step 87° - 93°
Oil Pump
Tighten the oil pump bolts in two steps in the order shown in the figure.
Tightening torque
Step 1 8 - 12 Nm (82 - 122 kgf-cm, 71 - 105 in-lbf)
Step 2 17 - 23 Nm (1.8 - 2.3 kgf-m, 12.6 - 16.9 ft-lbf)
Exhaust Manifold
Tighten the exhaust manifold installation nuts in the order shown.
Tightening torque 43 - 64 Nm (4.4 - 6.5 kgf-m, 32 - 47 ft-lbf)
Water Pump
Measure the length of each cylinder head bolt.
Replace any cylinder head bolts that exceed the maximum length.
Cylinder head bolt length
Standard 144.7 - 145.3 mm (5.697 - 5.720 in)
Maximum 146 mm (5.74 in)
Tightening procedure
1st step 3.0 - 11 Nm (31 - 112 kgf-cm, 27 - 97 in-lbf)
2nd step 13 - 17 Nm (133 - 173 kgf-cm, 116 - 150 in-lbf)
3rd step 43 - 47 Nm (4.4 - 4.7 kgf-m, 32 - 34 ft-lbf)
4th step 88° - 92°
5th step 88° - 92°
Camshaft Bearing
Install the camshaft caps and temporarily tighten the camshaft cap bolts evenly in two or three passes, and then tighten the camshaft cap bolts using the following two steps, in the order shown in the figure.
Tightening procedure
1st step 5.0 - 9.0 Nm (51 - 91 kgf-cm, 45 - 79 in-lbf)
2nd step 14 - 17 Nm (1.5 - 1.7 kgf-m, 11 - 12 ft-lbf)
Crankshaft Pulley Lock Bolt
Tightening procedure
1st step 96 - 104 Nm (9.8 - 10.6 kgf-m, 70.9 - 76.7 ft-lbf)
2nd step 87° - 93°
Oil Pump
Tighten the oil pump bolts in two steps in the order shown in the figure.
Tightening torque
Step 1 8 - 12 Nm (82 - 122 kgf-cm, 71 - 105 in-lbf)
Step 2 17 - 23 Nm (1.8 - 2.3 kgf-m, 12.6 - 16.9 ft-lbf)
Exhaust Manifold
Tighten the exhaust manifold installation nuts in the order shown.
Tightening torque 43 - 64 Nm (4.4 - 6.5 kgf-m, 32 - 47 ft-lbf)
Water Pump
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.