Category: Crankshaft

BC, Stroker – Proton 4G1#

Transplant this BC racing stroker cranks into your powerplant and get ready to pump out the power.

Features :
– Heat treated steel
– Nitrided harden
– Full flow oiling
– Profiled counterweights
– Machined for lightness
– Micro-polished to exacting tolerances.
– Straight shot and chamfer oil holes
– Large fillet radius on all journals
– Precious ground, micro polished, balanced & magnaflued
– Cross-Drilled holes for best rod journal lubrication
– Balanced crankshaft
– Greater torque and horsepower
– Similar to original 4G13/15 main and rod journal sizes
– Rod journal 42mm
– Main journal diameter 48mm
– Stroke 87mm
– Weight 11.7kg

Note :
– Use standard size 4G13/4G15 con rod bearing.
– You may select to use standard 4G13/4G15 con rod or standard Proton Waja 4G18 1.6 con rod.
– Piston 4G13/4G15 cannot be use. U may use waja 4G18 1.6 standard piston. – – Original 4G13/4G15 flywheel can be fitted in nicely using all original bolts.
– Original 4G13/4G15 crankshaft stroke 82mm.
– Main bolt tightening crank pulley to crankshaft still using original 4G13/4G15.

BC, Stroker – Proton 4G1#
– Conversion to 1.6 liter
– Model : 35965

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