The M30B35LE is a lower efficiency, SOHC, two-valve version of the M88/1 engine, also known as the M90. It uses the same block as the M88 and the same bore and stroke, but the cylinder head is borrowed from the BMW M30 engine family. Over the years, both Bosch Motronic and Bosch L-Jetronic engine management systems have been used in this engine. Usually identified by a white L on the block behind the oil filter housing and coolant passages on the side of the block.
Since it was sold in Europe and most other markets (except North America), it had a compression ratio of 9.3:1, had no catalytic converter, and produced 160 kW (218 hp).
Not to be confused with the M30B34 and M30B35 engines, which differ in cylinder block geometry.
M30 family: M30B25, M30B28, M30B30, M30B33, M30B34, M30B35, M30B35LE.
Specifications
| Production years | 1978-1982 |
| Displacement, cc | 3453 |
| Power output, hp | 218 |
| Torque output, Nm | 310 |
| Cylinder block | cast iron R6 |
| Block head | aluminum 12v |
| Cylinder bore, mm | 93.4 |
| Piston stroke, mm | 84 |
| Compression ratio | 9.3 |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.75 |
| Fuel type | petrol |
| Euro standards | EURO 1 |
| Engine lifespan, km | ~3500 000 |
| Weight, kg | 192 |
The engine was installed on:
- BMW E12 M535i in 1979 – 1981;
- BMW E24 635CSi in 1978 – 1982;
- BMW E23 735i in 1978 – 1982.
Frequently asked questions about the BMW M30B35LE
How much power does the BMW M30B35LE make?
The BMW M30B35LE develops 218 hp and 310 Nm of torque.
How much oil does the BMW M30B35LE take and which one?
Engine oil capacity: 5.75 liters. Recommended oil: 5W-30.
Does the BMW M30B35LE have a timing belt or chain?
The BMW M30B35LE uses a timing chain.
Is the BMW M30B35LE turbocharged?
No, the BMW M30B35LE is naturally aspirated.
Does the BMW M30B35LE need valve clearance adjustment?
Yes, there are no hydraulic lifters, so the valve clearances have to be checked and adjusted periodically.
How long does the BMW M30B35LE last?
The typical lifespan of the BMW M30B35LE is ~3500 000 km with proper maintenance.
What cars was the BMW M30B35LE installed on?
BMW E12 M535i in 1979 - 1981; BMW E24 635CSi in 1978 - 1982; BMW E23 735i in 1978 - 1982.
