Spool Mitsubishi 4G63 Stroker Crankshaft - 100mm

Overview

Mitsubishi 4G63 100mm stroker crankshaft.

With the increased cubic capacity from the 100mm 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.

The 4G63 engine in its factory form has a 85mm bore and 88mm stroke, giving a displacement of 1997cc.

Using the 100 mm stroker crank, std length conrods and custom pistons, the displacement is increased as follows:

• 85.5mm bore and the 100mm stroker crank = 2297cc / 300cc increase
• 86 mm bore and the 100 mm stroker crank = 2324cc / 327cc increase

Note: If conrod to block interference occurs, slight clearancing maybe required.

• Crank Weighs 16kg
• Fully Counter Weighted
• Nitrided Finish
• Fully Balanced
• Stroke 100mm

Engine build fitment

4G63. 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.