The only Honda engine designed to sit longitudinally for the rear wheel drive S2000 (named for it's 1997cc displacement), this is Honda's answer to 4 cylinder high performance, high engine rpm (8900 rpm factory redline). Similar to the K Series engine in terms of mechanical roller cam profiles and roller rocker followers, the S2000 engine is used in a variety racing applications. The F20C engine is found in the 00-03 USDM S2000 and the 00-05 JDM S2000 while the F22C is used to service the 04-up USDM chassis and has just replaced the F20C in the 2006 JDM S2000. Similar in terms of compression and cam specifications, the F22C features a longer stroke for added displacement and increased torque.
|Stage||Description||Cam #||Adv. Dur.||Dur @ .050||Lift (in)||Lift (mm)||Kit #|
Short duration profile builds cylinder pressure by reducing overlap, high lift for more air intake. Requires kit BC0040.
|All Motor Street - Normally Aspirated|
Drop in cams that deliver spirited driving without requiring a valve spring change. Delivers double digit HP gains without modifications.
|Full Race - Normally Aspirated|
Intended for fully built engine. Extensive mods, ECU tuning and high compression pistons are recommended. Requires kit BC0040. Note: Possible piston to valve issues with OEM pistons
|USDM F20C (S2000 '00-'03)||Stock||300°/298°||226°/222°||.498"/.459"||12.65/11.66|
|USDM F22C (S2000 '04-up)||Stock||296°/296°||224°/222°||.487"/.475"||12.37/12.06|
Rocker Ratio: 1.72:1 mid, 1.7:1 sec, 1.7:1 pri
VALVE SPRING/RETAINER KIT
Designed for high rpm, BC valve springs 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.
|Kit #||Spring #||Retainer #||Seat #||Description|
|BC0040||BC1040||BC2010||BC2904||Dual spring, titanium retainer/seat|
|BC0040S||BC1040||BC2011||BC2904||Dual spring, steel retainer/seat|
BC1040 Seat: 1.580" @ 84 lbs / Open: 1.100" @ 250 lbs / Coil Bind: 1.030" (no machine work required).
K20A and F20C/F22C use same spring/retainer/seat kit.
STAINLESS STEEL VALVES
BC valves are made from premium stainless steel, fully machined and swirl polished for ultimate air flow. Dished head for added weight savings and increased valve control at high rpm. Standard and oversize head.
|Part #||Description #|
|BC3060||36.0mm Intake (standard head diameter)|
|BC3061||31.0mm Exhaust (standard head diameter)|
|BC3064||37.0mm Intake (+1mm head diameter)|
|BC3065||32.0mm Exhaust (+1mm head diameter)|
F20C/F22C 2.47L STROKER KIT
|Kit #||Crank #||Rod #||Piston #||Desc.|
The BC stroker kit for the Honda F Series engine platform incorporates a 97mm stroke that fits both the early model F20C as well as the late model F22C. Depending on bore size that you decide, the BC kit will take you up to a 2.47L with 90mm bore. As usual, each BC kit features custom CP aluminum forged pistons, 9310 alloy wrist pins, ring pack and buttons. Available in any desired bore and compression ratio for use in turbo or NA.
F20C 87mm Bore x 84mm Stroke - 8.815" Block Height
F22C 87mm Bore x 90.7mm Stroke - 8.815" Block Height