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.
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HOMESERVICE MANUALSBMW1987L7 (E23) L6-3430CC 3.4L SOHC (M30)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYSYSTEM SPECIFICATIONS
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)
System Specifications
1987 BMW L7 (E23) L6-3430cc 3.4L SOHC (M30)SECTION System Specifications
Cylinder Head Torque Sequence
6 Cylinder M30 Tighten Sequence:
Cylinder Head Bolts [1]
Step #1 60 Nm (45 ft lb).
Wait 20 minutes!
Step #2 80 Nm (59 ft lb).
Run engine warm 25 minutes!
Step #3 Torque Angle 35 °
CAUTION: Remove oil and debris from bolt holes. If not, improper values or damage may result.
[1] Install new, lightly oiled bolts.
RENDER: 1.0x
NO RELATED
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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.