Brian Crower

Honda F20C/F22C

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 #
	Forced Induction Short duration profile builds cylinder pressure by reducing overlap, high lift for more air intake. Requires kit BC0040.	BC0061T	280°/276° 244°/240° 232°/230°	230°/226° 172°/170° 166°/164°	.500"/.466" .330"/.330" .310"/.310"	12.70/11.84 8.38/8.38 7.87/7.87	BC0040 or BC0040S
	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.	BC0061	310°/308° 250°/242° 238°/234°	232°/228° 176°/174° 170°/168°	.512"/.492" .335"/.335" .313"/.318"	13.61/13.08 8.50/8.50 7.95/8.08	BC0040 or BC0040S
	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	BC0062	314°/310° 256°/256° 250°/250°	244°/240° 190°/190° 184°/184°	.525"/.518" .369"/.369" .323"/.323"	13.94/13.77 9.37/9.37 8.20/8.20	BC0040 or BC0040S
	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

Spring Pressure:
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

• BC 4340 billet steel crankshaft (97mm stroke).
• BC 4340 Pro Series steel billet connecting rods w/ARP 220,000 psi fasteners.
• CP aluminum forged pistons (any bore size, any compression ratio).
• 5100 Series carbon steel alloy wrist pins. 9310 pin upgrade available.
• Ductile iron plasma top rings, tapered second ring, low tension oil rings.
• ACL Race Series bearings sold seperately.
• Fully system balanced and ready to install.

Kit #	Crank #	Rod #	Piston #	Desc.
BC0068	BC5069	BC6068	BC7069	97mm stroke

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.

Stock Specifications:
F20C 87mm Bore x 84mm Stroke - 8.815" Block Height
F22C 87mm Bore x 90.7mm Stroke - 8.815" Block Height

LEFT COLUMN