Pistons
From Factory 4 R And D
The following piston information is primarily for L-Series building. Please note the bore differences as not all factory specifications are compatible and as such will require machining work.
| Series | Piston Pin Height (mm) | Piston Dish Volume (cc) | Stock Bore (mm) |
|---|---|---|---|
| L13/L24 | 38.1 | 0.0 | 83 |
| L16/L26 | 38.1 | 7.01 | 83 |
| L18 | 38.1 | 4.35 | 85 |
| L20B | 38.1 | 11.36 | 85 |
| L28 (75 - 80) | 38.1 | 10.9 | 86 |
| L28 (81 - 83) | 38.1 | 0.0 | 86 |
| Z20S | 35.56 | - | 85 |
| Z22S/Early Z22E | 35.5 | 9.32 | 87 |
| Late Z22E | 32.1 | - | 87 |
| Z20E | 31.75 | 13 (Approx) | 85 |
| Z24 | 34.0 | 15 | 89 |
| KA24E | 34.0 | 2.8 | 89 |
| VG30E | 31.75 | 1.0 | 87 |
| RB30E | 32 | - | 86 |
