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2.0L 16v - HF Integrale
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2.0L 16v - HF Integrale
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Set of 10 tri-metal crankshaft half shells for the five main bearings of the Lancia Delta HF Integrale 2.0 litre engine.
The Lancia Delta HF Integrale (831 series) is fitted with a 2.0 litre engine (engine codes 831 C5.000, 831 C5.046, 831 D5.000, 831 E5.000 and 831 E5.046). King lists main bearing set MB5730XP for this application: a single set covers these engines.
The crankshaft of these engines runs on five main bearings. Each journal turns between two half shells, one seated in the block and the other in the main bearing cap: they carry the crankshaft. The KING RACING tri-metal set shown here replaces them on built engines.
A tri-metal bearing stacks three layers: a steel back, a copper-lead intermediate layer with high load capacity and an anti-friction running surface that protects the journal. The complete set contains 10 half shells, five pairs for five main bearings.
An aluminium bi-metal takes around 8,000 psi, a performance tri-metal up to 12,000 psi, 50% more. Hence better resistance and better durability on turbocharged, supercharged and high-revving engines.
| King bearings Crankshaft journal Ø 52.99 / 53.00 mm Housing bore Ø 56.72 / 56.74 mm Width 20.7 mm (main bearing 3: 24.2 mm) |
| Reference | Brand and treatment | Size | Wall thickness (mm) |
|---|---|---|---|
| MB5730XP | King Racing - Untreated | Standard | 1.841 |
| MB5730XP STDX | King Racing - Untreated | Std, increased clearance (STDX) | 1.828 |
| MB5730XP0.25 | King Racing - Untreated | +0.25 | 1.968 |
The running clearance is the gap between the bearing and the journal where the oil film flows.
In operation, the crankshaft journal does not rub against the bearing: it rides on this oil film, which carries the load. Clearance sets the thickness of this film: too tight, oil flows poorly, temperature rises and the risk of seizure increases; too loose, oil escapes, the film loses load-carrying capacity and oil pressure drops. The right clearance is the balance between adequate lubrication and a well-maintained oil film.
| Size / grade | When to choose it | King XP |
|---|---|---|
| Standard (STD) | Standard journal, not reground | 0.053 mm - 0.066 mm |
| +0.25 mm | Journal reground to 0.25 mm | 0.053 mm - 0.066 mm |
Check at assembly: lay a calibrated strip (Plastigauge) on the journal, tighten the main cap following the manufacturer's procedure, then compare the width of the crushed strip with the gauge to read the clearance.
The King main bearings shown here are trimetal bearings, designed for engine building and racing. Compared with an original bearing, they handle far higher loads: they cope with increased power, high rpm or the addition of a turbo or supercharger, where a standard bearing quickly reaches its limit.
 | King Engine Bearings, an Israeli manufacturer of high-performance engine bearings since the 1960s, offers with its pMax Black tri-metal alloy bearings designed for heavy loads. |
| Criterion | King Racing |
| Cross-section |  |
| Type | High-performance trimetal bearing |
| Country of manufacture | Israel |
| Construction | Trimetal: steel back, copper layer, soft surface |
| Alloy | pMax Black (hardened copper-lead) |
| Protective coating | No |
| Available sizes | Standard, StandardX, +0.25 mm |
This main bearing set fits the following vehicles, according to the engine code:
| Brand | Model (chassis) | Engine code | Power | Years |
|---|---|---|---|---|
| Lancia | Delta I (831_) | 831 C5.000 | 181 hp | 1987–1991 |
| Lancia | Delta I (831_) | 831 D5.000 | 196 hp | 1989–1991 |
| Lancia | Delta I (831_) | 831 C5.046 | 177 hp | 1986–1992 |
| Lancia | Delta I (831_) | 831 E5.046, 831 E5.000 | 211 hp | 1993–1994 |
| Lancia | Delta I (831_) | 831 E5.000 | 205 hp | 1991–1994 |
| Lancia | Delta I (831_) | 831 E5.000 | 209 hp | 1991–1992 |
| Lancia | Delta I (831_) | 831 E5.000 | 215 hp | 1993–1994 |
