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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.
Pistons available for Twin cam cylinder head and SOHC cylinder head
See all the info on the RB30 vs RB34 dyno comparison here: RB34DET Dyno Results
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 3.4 142 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
SPOOL RB34 Kit - 9000RPM - 83mm Precision Turbo - 1070AWHP - 34PSI
SPOOL RB34 Kit - 8200RPM - Garret T04Z - 610RWHP - 23PSI
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.