Bulkhead Workshop › Land Rover models › Land Rover Discovery 1 3.5 / 3.9 / 4.0 V8 › Specs & manuals
Land Rover Discovery 1 3.5 / 3.9 / 4.0 V8 specs and manuals
Discovery 1 (1989–98) · 1989–1998
Model data
| Built | 1989–1998 |
|---|---|
| Engine | 3.5 L V8 (carburettor to 1990, then fuel injection), 3.9 L from 1993, 4.0 L in the 1995-on facelift |
| Gearbox & 4WD | 5-speed LT77 (R380 from 1994) or ZF 4-speed automatic; LT230 transfer box |
| Wheelbases | 100 in |
| Notes | Discovery launched 1989 as a three-door; five-door from 1990. Built on the Range Rover chassis. |
Fluids & capacities
| Engine oil | 10W-40 or 15W-40 semi-synthetic (API SG/SH or better); 20W-50 on high-mileage engines |
|---|---|
| Oil capacity | ≈6.7 L including filter (Dingocroft; fill to the dipstick) |
| Coolant | ≈11–12.8 L, 50% antifreeze with an aluminium-safe inhibitor; never let the mix get weak (the block and heads are aluminium) |
| Air filter | Paper element |
| Main gearbox | LT77 5-speed (1989–94) or R380 (1994–98): ATF Dexron IID, ≈2.4–2.7 L · or ZF 4HP22 4-speed automatic: ATF Dexron IID, ≈8.5–9.1 L from dry (a drain and filter change takes about 4 L) |
| Transfer box | LT230: 80W-90 (GL-4) or ATF Dexron IID (refill with whichever was drained), ≈2.3–2.8 L |
| Differentials | EP90 / 80W-90 hypoid to API GL-4, ≈1.7 L each axle |
| Swivel housings | EP90, ≈0.35 L each side; later vehicles one-shot grease |
| Steering | Power steering: ATF Dexron II/III, ≈3.4 L (RHD) / 2.9 L (LHD) |
| Brakes | DOT4, minimum boiling point 260 °C |
| Clutch hydraulics | DOT4 |
Settings & torque figures
| Contact breaker gap | Electronic ignition: no points |
|---|---|
| Spark plugs | Champion RN9YC type (ERR743) on 3.5; check the handbook for the 3.9/4.0, gap 0.72–0.88 mm |
| Valve clearances | Hydraulic, no adjustment |
| Timing | Firing order 1-8-4-3-6-5-7-2 |
| Wheel nut torque | Alloy wheels ≈130 Nm (96 lbf ft); steel ≈108 Nm (80 lbf ft) |
Service part numbers
| Oil filter | ERR3340 |
|---|---|
| Fuel filter | ESR4065 |
| Spark plugs | ERR743 |
Sources for this model
Workshop manuals
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HaynesPrinted and online manuals for most Land Rover models
Brooklands BooksReprints of the official Land Rover workshop manuals and parts catalogues
Paddock SparesParts catalogue with exploded diagrams by model
LR4x4 forumSeries, Ninety/One Ten and Defender technical sections
Defender2.netDefender-focused technical forum
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