Spool Nissan CA18 Stroker EN40B Billet Crankshaft

Nissan CA18DET 87.6mm Billet EN40B Stroker Crankshaft

This is a true billet crankshaft machined from Billet EN40B core stock (not a cast forging blank that is final machined).

Each crank is machined from core stock EN40B on a CNC machine, then Nitrided and final ground.

With the increased cubic capacity from the 87.6mm m stroker crank, big increases in torque and low to mid range power are achievable. Boost will come on earlier in the rev range and peak power will increase.

The CA18DET engine in its factory form has a 83mm bore and 83.6mm stroke, giving a displacement of 1809cc.

Using the 87.6 mm stroker crank, std length conrods and custom pistons, the displacement is increased as follows:

• 83.5mm bore and the 87.6mm stroker crank = 1919cc / 110cc increase
• 84 mm bore and the 87.6 mm stroker crank = 1942cc / 133cc increase

Crank Weighs 18kg4340 Grade Billet SteelFully Counter WeightedNitrided FinishFully BalancedStroke 87.6mm

Engine build fitment

CA18. 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.