Applications Nissan RB30
Draft. Trigger offset has not been confirmed on a running Race Core install. Pins marked TBD are unknown — do not guess them. A wrong decoder or firing order can destroy the engine.
Nissan RB30E / RB30ET
3.0 L RB in the VL Commodore and some Skylines. Factory optical 360° CAS is not supported. The rusEFI trigger list says the 360-slot wheel is not a planned decoder. Fit a missing-tooth crank wheel. The supported path is the same as the RB26 note: a crank trigger, not the optical disc. Firing order matches the other RB notes.
Recommended: F7 or V4. Six injectors. COP or a wasted-spark igniter after the crank wheel exists. Read the RB26DETT note before you wire a CAS.
Status: draft. Trigger offset has not been confirmed on a running Race Core install.
- Cylinders: 6
- Displacement: 2962 cc
- Firing order: 1-5-3-6-2-4
- Orientation: Cylinder 1 at the front. Firing order 1-5-3-6-2-4.
Variants
| Variant | Years | Trigger | Notes |
|---|---|---|---|
| RB30E | 1985–1988 class | Optical CAS — unsupported | VL Commodore NA. SOHC. Batch or grouped injection from the factory. |
| RB30ET | Turbo VL | Optical CAS — unsupported | Single turbo, same firing order, same 360-slot problem. |
| RB30 with RB25 trigger | Swap | RB25 crank angle sensor or 36-1 | Common fix. Use the crank wheel you actually fitted, and the RB26 note’s warning about the 109° CAS rumour. |
Recommended pin assignment (Race Core F7)
Pins below are the library default Race Core F7 map — the same AMPSEAL landings as the verified 1UZ-FE, 2JZ-GTE and LS1 notes. Core EFI V4 and Micro Core cavity numbers are TBD. If a pin is not in this table, it is TBD. Do not guess a spare.
| Pin | TunerStudio | Function |
|---|---|---|
| B10 | Digital 1 | Crank Hall |
| B1 | Digital 2 | Cam Hall |
| A3 | Lowside 1 | Injector cylinder 1 |
| A15 | Lowside 2 | Injector cylinder 2 |
| A4 | Lowside 3 | Injector cylinder 3 |
| A16 | Lowside 4 | Injector cylinder 4 |
| A5 | Lowside 5 | Injector cylinder 5 |
| A6 | Lowside 6 | Injector cylinder 6 |
| A35 | Ign 1 | Cyl 1 logic coil |
| A34 | Ign 2 | Cyl 2 logic coil |
| A22 | Ign 3 | Cyl 3 logic coil |
| A33 | Ign 4 | Cyl 4 logic coil |
| A32 | Ign 5 | Cyl 5 logic coil |
| A31 | Ign 6 | Cyl 6 logic coil |
| A14 | Highside 4 | Boost solenoid if it is high-side switched. A ground-switched valve needs a spare low-side — that pin is TBD |
| C20 | Analog Temp 3 | CLT |
| C30 | Analog Temp 2 | IAT |
| C13 | Analog Volt 1 | MAP 0–5 V |
| C24 | Analog Volt 2 | TPS 1 |
| C34 | Knock 1 | Knock |
| A20 | Lowside 10 | Fuel-pump relay coil |
| A21 | Lowside 12 | Main-relay coil |
| A12 | Lowside 15 | Radiator-fan relay coil |
| B17 / B16 | CAN 1 H / L | Dash / wideband |
| B18 | Battery Sense | Ignition-switched 12 V (5 A fuse) |
| B23 | +12 V MR | Main-relay 12 V into ECU |
| A17 A18 A24 B14 B19 B20 | Power GND | Engine block → battery − |
| C9 / C21 / C32 | 5 V Sens 1 | MAP, TPS, pedal 1 |
| C1–C8, C29, C31 | Sensor GND | 0–5 V and thermistor returns |
Trigger
Same rule as RB26DETT. Do not wire the 360 track. A 24-1 or 36-1 crank wheel, plus a cam, is the Race Core path. The OEM CAS “about 109°” figure is for that CAS body, not for a missing-tooth wheel.
Crank
| Recommended | 36-1 or 24-1 on Digital 1 or VR 1. |
| Factory CAS | Not supported. |
Cam
| Sync | Digital 2, one pulse per cam revolution. |
TunerStudio
| Setting | Value |
|---|---|
| Trigger / wheel type | 36-1 or 24-1 + cam |
| Use only rising edge | Hall: as logged. VR: typically yes on MAX992x |
| Invert primary | No — swap VR wires first |
| Firing order | 1-5-3-6-2-4 |
Offset: Light on cylinder 1. Lock any adjustable CAS before you move software offset. Do not chase both.
Injection
Six port injectors. Meter high-Z versus low-Z. Low-Z needs the resistor pack or high-Z replacements. The RB26 note’s warning applies: a saturated low-side is not a current-controlled peak-and-hold driver.
| RB30E | Often high-Z. Confirm. Do not assume the RB26 resistor pack is in a VL. |
Ignition
SOHC distributor or coil: igniter, pins TBD, until you convert to logic COP on Ign 1–6. Firing order in software.
| Dwell | Logic COP 2.0–2.5 ms. Igniter dwell from the module data, not from a COP map. |
Idle
Cable throttle, idle valve pin TBD. Boost on an ET uses Highside 4 only when the solenoid is high-side switched.
First start
- Load the matching variant configuration in TunerStudio before the harness is live — injectors and coils stay disconnected until the decoder is confirmed.
- Fuel pump fuse out. Coils unplugged or spark outputs disabled. Crank. Open Diagnostics → composite / high-speed logger.
- Confirm crank teeth are even, the missing-tooth (or named pattern) is a single clean gap, and cam is one pulse per two crank revolutions for sequential four-stroke.
- RPM during cranking should sit in the 150–350 rpm band. 0 rpm or 12,000 rpm means the decoder is lost — polarity or wheel type, not offset.
- Lock timing to a fixed 10° (idle control off). Timing light on cylinder 1. Change trigger offset until the damper agrees with 10°.
- Recheck at ~3,000 rpm. If timing walks with RPM, it is VR polarity, a delayed Hall, or the wrong decoder — not offset.
- Enable spark. Confirm a healthy burn (timing light or plug colour) with fuel still disabled.
- Enable fuel. Prime, then crank. Catch the first idle on a rich-safe VE, then lean toward stoich at idle.
- Only then enable closed-loop idle, VVT, boost and traction. A base map is a starting point, not a dyno tune.
A base map is a starting point, not a dyno tune.