Spool Nissan / Holden RB30 - RB34 Stroker Crankshaft
Spool Nissan / Holden RB30 - RB34 Stroker Crankshaft
Spool RB30 Full Counter weight 4340 Billet Crankshaft with a 94mm stroke.
RB34 Stroker Crank to suit Nissan Skyline RB30 and Holden RB30 VL Commodore engines
We have Pistons available to suit both Twin Cam and SOHC cylinder heads.
This is a true billet crankshaft machined from Billet 4340 core stock (not a cast forging blank that is final machined).
Each crank is machined from core stock 4340 on a CNC machine, then Nitrided and final ground.
We have customers making over 1000 hp with our billet crankshafts!
As you can see from the table below. The RB34 has a very similar rod/stroke ratio as the Nissan CA18 and Toyota 2JZ both of which love to rev and have been around a long long time.
| Engine | Rod Length (mm) | Stroke (mm) | Rod:Stroke Ratio |
|---|---|---|---|
| SR20 Stroker | 136.3 | 91 | 1.50 |
| 2JZ 3.4L | 142 | 94 | 1.51 |
| CA18 Stroker | 133 | 87.6 | 1.52 |
| LS Stroker | 155.57 | 101.6 | 1.53 |
| BA | 153.92 | 99.31 | 1.55 |
| EL/EF | 149.35 | 96.31 | 1.55 |
| 3RZ | 147 | 95 | 1.55 |
| RB28 | 121.5 | 77.7 | 1.56 |
| SR20 | 136.3 | 86 | 1.58 |
| CA18 | 133 | 83.6 | 1.59 |
| RB34 | 152.5 | 94 | 1.62 |
| 2JZ | 142 | 86 | 1.65 |
| RB26 | 121.5 | 73.7 | 1.65 |
| RB32 | 152.5 | 91 | 1.68 |
| 1JZ | 125.25 | 71.5 | 1.75 |
| RB30 | 152.5 | 86 | 1.77 |
With the increased cubic capacity from the 94mm stroker crank, increases of up to 50% in torque and low to mid range power are achievable. Boost will come on earlier in the rev range and peak power will increase.
Engine build fitment
RB30DET (DOHC)|RB30ET (SOHC)|RB34 Stroker. Match the selected dimensions, engine generation and rotating assembly specification before machining or assembly.
Installation and BBT workshop support
Measure journal and thrust clearances, check block clearance and balance the complete rotating assembly. Confirm the damper, crank trigger and flywheel arrangement with your engine builder.
Built by Boost & Tune is an authorised Spool Imports dealer and can assist with component selection, engine assembly and tuning requirements for your build.