The 2.0-liter 16-valve Rover 20M4F or 20HDM16 engine was assembled from 1986 to 1995 and put on the 800 model until its restyling in 1991, then on advanced versions of the 200 and 400. There is a 120-hp modification of this unit with single injection and a 177-hp turbo engine.
M/T-series family: 20T4H, 20M4F, 20T4G.
Specifications
| Production years | 1986-1995 |
| Displacement, cc | 1994 |
| Fuel system | distributed injection |
| Power output, hp | 133 – 140 |
| Torque output, Nm | 178 |
| Cylinder block | cast iron R4 |
| Block head | aluminum 16v |
| Cylinder bore, mm | 84.45 |
| Piston stroke, mm | 88.9 |
| Compression ratio | 10.0 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.9 |
| Fuel type | petrol |
| Euro standards | EURO 1/2 |
| Fuel consumption, L/100 km (for Rover 820 1988) — city — highway — combined |
11.3 6.5 8.4 |
| Engine lifespan, km | ~280 000 |
| Weight, kg | 162.8 |
The engine was installed on:
Disadvantages of the Rover 20M4F engine
- The first years of production, the engine had a bunch of flaws and caused a lot of trouble;
- Grease and antifreeze leaks occurred regularly, and hydraulic lifters also hung;
- In addition, owners of cars with such a motor complain about vibrations and noisy operation;
- The timing belt is designed for 100,000 km, and when it breaks, the valves always bend.
Frequently asked questions about the Rover 20M4F
How much power does the Rover 20M4F make?
The Rover 20M4F develops 133 - 140 hp and 178 Nm of torque.
How much oil does the Rover 20M4F take and which one?
Engine oil capacity: 5.9 liters. Recommended oil: 5W-30.
Does the Rover 20M4F have a timing belt or chain?
The Rover 20M4F uses a timing belt.
Is the Rover 20M4F turbocharged?
No, the Rover 20M4F is naturally aspirated.
Does the Rover 20M4F need valve clearance adjustment?
No, the Rover 20M4F has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Rover 20M4F last?
The typical lifespan of the Rover 20M4F is ~280 000 km with proper maintenance.
What is the fuel consumption of the Rover 20M4F?
Rover 820 1988: city 11.3, highway 6.5, combined 8.4 L/100 km.
What cars was the Rover 20M4F installed on?
Rover 200 II (XW) in 1991 - 1995; Rover 400 I (XW) in 1992 - 1995; Rover 800 I (XS) in 1986 - 1991.
What are the common problems of the Rover 20M4F?
The first years of production, the engine had a bunch of flaws and caused a lot of trouble. Grease and antifreeze leaks occurred regularly, and hydraulic lifters also hung. All known problems.
