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Built Motor GuideEngine Specifications
B4x Part Cross Compatibility List
This page lists parts/engine designs that are similar between B46/B48, B4xTU, B4xTU2, B4xTU3, B48E, B48R, B58, B58TU, B58TU2, and S58.
Legend
Identical for given platform
Not identical for given platform
| Parts/Specs | B46/B48 | B4xTU | B4xTU2 | B4xTU3 | B48E | B48R | B58 | B58TU | B58TU2 | S58 |
|---|---|---|---|---|---|---|---|---|---|---|
| Engine Bore Spacing of 91mm | ||||||||||
| Engine Bore Size 82mm | No (84mm) | |||||||||
| Engine Stroke of 94.6mm | No (90mm) | |||||||||
| Displacement of 121.925 CID or 1.998L | No (2.998L) | No (2.998L) | No (2.998L) | No (2.998L) | ||||||
| Connecting Rod Length 148mm Centre to Centre | No (146mm) | No (146mm) | No (151.1mm) | |||||||
| Connecting Rod Bearings | Unknown | |||||||||
| Same Conrod Design | No (Same as S63B44T4) | |||||||||
| Same Conrod Material (Forged) | Newer IROX Drop Forged Rods | Newer IROX Drop Forged Rods | ||||||||
| Same Main/Crank Bearings | No - Same as B58 | No - Same as B58 | Unknown | |||||||
| Main Caps | No - Same as B58 | No - Same as B58 | ||||||||
| Same Conrod Bolts (Same as M54, N20, N55, S55) | ||||||||||
| Same Forged Crankshaft | No, Unique (55mm vs 50mm journals) | No, Unique (55mm vs 50mm journals) | ||||||||
| Same Engine Compression (11 & 10.2CR) | Yes (Mahle Evotech 2) | Yes (Mahle Evotech 2) | Yes (Mahle Evotech 2) | No (9.5:1 CR) | No (9.5:1 CR) | Partially (11:1 CR) | Partially (11:1 CR) | Partially (11:1 CR) | No (9.3:1) | |
| Cast Pistons | Yes (steel top ringland) | Yes (steel top ringland) | Yes (steel top ringland) | Yes (steel top ringland) | Yes (steel top ringland) | No, Forged | ||||
| Same Head Studs/Bolts (M11) | ||||||||||
| Same Intake Port Shape/Design | Yes (Mini has different angle) | |||||||||
| Same Exhaust Port Design | ||||||||||
| Timing Chain Guides | No, Same as TU engines | No, Same as TU engines | No, Same as TU engines | No, Same as TU engines | No, Same as TU engines | No, Same as TU engines | No, Same as TU engines | No, Same as TU engines | ||
| EWG Solenoid | ||||||||||
| Intercooler | Yes (orientation dependent) | Yes (orientation dependent) | Yes (orientation dependent) | No (uses FMIC) | No (uses FMIC) | No (uses W2A IC) | No (uses W2A IC) | No (uses W2A IC) | No (uses W2A IC) | |
| Intake Valves | Yes (Material Change) | |||||||||
| Valve Springs Intake | ||||||||||
| Valve Stem Seals (Shared with N20/26) | ||||||||||
| Valve Locks/Collet (shared with N20, N55, S55) | ||||||||||
| Intake Valve Rocker Arm | ||||||||||
| Exhaust Valves | Yes (Material Change) | |||||||||
| Valve Springs Exhaust | ||||||||||
| Intake Side Hydraulic Lifters | ||||||||||
| Intake Valve Lift Variable Rocker Arms | ||||||||||
| Uses a Diverter Valve | Yes (M-Lite only) | Yes (M-Lite only) | TBD |