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.
1161 Intake System
B36 ENGINE (COOPER BASE):
| Type | Thread | Tightening specifications | Dimension | |
|---|---|---|---|---|
| 1AZ Intake plenum to cylinder head | B32S15M0/B38M0/U0/B36M0 | M6 | 10 Nm | |
| 2AZ Boost pressure sensor to intake plenum | B32S15M0/B38M0/U0/B36M0 | M6 | 8 Nm | |
| 3AZ Charge air hose to oil sump | B32S15M0/B38M0/U0/B36M0 | M6 | 8 Nm |
B46 AND B48 ENGINES (COOPER S AND JCW):
| Type | Thread | Tightening specifications | Dimension | |
|---|---|---|---|---|
| 1AZ Intake plenum to cylinder head | B42S2000/B46M0/O0/B48M0/O0 | M6 | 10 Nm | |
| 2AZ Holder for intake plenum to cylinder head/crankcase | B42S2000/B46M0/O0/B48M0/O0 | M6 | 10 Nm | |
| 3AZ Rear intake plenum holder | B42S2000/B46M0/O0/B48M0/O0 | M6 | 10 Nm | |
| 4AZ Intake plenum to rear/front holder | B42S2000/B46M0/O0/B48M0/O0 | 8 Nm | ||
| 5AZ Holder for wiring harness to intake plenum | B42S2000/B46M0/O0/B48M0/O0 | 5 Nm | ||
| 6AZ Tank vent line to intake plenum | B42S2000/B46M0/O0/B48M0/O0 | 5 Nm |
Use the Manual With the Right Hardware
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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.
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