B16A / B18C - Valve Spring & Retainer Kits
Designed for high rpm, BC valve springs by PAC Racing are wound from only the highest grade, super clean, chrome silicone alloy and feature proprietary processing procedures for consistent pressures. BC titanium retainers are CNC machined from 6AL4V round bar titanium to exacting tolerances. Use steel retainer for high mileage applications.
Dual spring, titanium retainer - race
Dual spring, steel ret. - high mileage
Spring Pressure: BC1010 Seat: 1.350" @ 80 lbs / Open: 0.900" @ 220 lbs / Coil Bind: 0.765" (no machine work required)
WARNING: Mandatory to check valve guide to retainer clearance prior to operation.
B16A / B18C Valve Keepers / Locks
7° billet performance valve stem keepers or locks are designed to fit BC retainers (BC2010 and BC2011). Precision machined from premium billet bar stock chromoly steel and heat treated for maximum strength to insure against shoulder shearing (common with stock and lesser quality brands).
B16A / B18C Stainless Steel Valves
BC valves are one piece design with a friction welded Stellite tip for the best possible performance. Every valve is made from premium grade, heat resistant stainless steel material to insure reliability with high boost and/or high rpm applications. The undercut stem above the head area not only reduces overall weight for extended rpm potential, but also significantly improves air/fuel flow in and out of the combustion chamber. Every valve is fully machined and features a swirl polished finish under the head.
33.0mm Intake (standard head diameter)
28.0mm Exhaust (standard head diameter)
34.0mm Intake (+1mm head diameter)
29.0mm Exhaust (+1mm head diameter)
B16A / B18C VALVE GUIDES
BC premium valves guides are made from Manganese Silicon Aluminum Bronze alloy and CNC machined to exacting tolerances. BC guides are resistant to cracking and corrosion, while reducing friction and insures high lubrication even at elevated engine temperatures and rpm's. The perfect replacement to worn or damaged guides and 100% compatible with BC's lineup of stainless steel valves.