BC Brian Crower Valve Guides for 2JZ Toyota Supra (BC3930/BC3931) Pure Turbos Globally reduce timing on the

Globally reduce timing on the fly to compensate for bad pump fuel

drop-in replacement for 4G63 applications looking to spin up to 10

This cover fits the Ford 10R60 and 10R80 transmissions

The Forge silicone recirculation valve hoses in this kit utilize a premium Fluorosilicone inner liner

Other Vehicles:

BC Brian Crower Valve Guides for 2JZ Toyota Supra (BC3930/BC3931) Pure Turbos Globally reduce timing on theValve guides are essential components that wear over time, especially in high revving 2JZ engines. To maintain proper tolerances and optimal performance, it's advisable to replace worn guides with new aftermarket ones. BC premium valve guides, made from Manganese Silicon Aluminum Bronze alloy, are CNC machined to precise tolerances. These guides resist cracking and corrosion, reduce friction, and ensure high lubrication even at elevated engine