The EC Big Valve 14cc Cylinder Head with 32mm Intake and 25mm Exhaust Valves with 5.5mm valve stems.
This Head fits the Honda GX200, Clone 196, Tillotson 196/212/225, Ducar 196/212, BSP 196/212, and Hemi Predator 212 Hemi. The Non-Hemi Predator Block has larger dowels that will require the Head to be machined to fit.
The Head Comes with 32mm Intake and, 25mm Exhaust Valves; 5.5mm Stems. Precision Multi-Angle Job, Valve Bowl area, cleaned up match to the seats. The valve work is performed on Rotter Seat & Guide Machine for accuracy and precision. Heads are vacuum checked after the valves are installed to ensure your air-fuel mixture and combustion happen in the cylinder.
The 14cc Combustion Chamber to increase compression. The intake and exhaust runners are not ported to allow the engine builder or assembler to build the ports to their specifications.
EC offers CNC ported heads for those that need a fast setup out of the box. Springs, Retainers, Rockers, Gaskets, Seals, or valve covers are omitted.
Intake: 32mm, 5.5mm
Exhaust: 25mm, 5.5mm
Combustion Chamber: 14cc, Non-Hemi
Multi-Angle Valve Job
Compression Ratio Examples(Final Result will vary on Engine Measurements):
Predator Hemi, Flat Top, .035" Deck height,
w/.045" Thick Head Gasket 10.77:1
w/.010" Thin Head Gasket 12.6
Tillotson 212, Flat Top, .000" Deck height,
w/.045" Thick Head Gasket 12.6:1
w/.010" Thin Head Gasket 15.27:1
Tillotson 225, Flat Top, .000" Deck height,
w/.045" Thick Head Gasket 13.05:1
w/.032" EC Copper Head Gasket 13.98:1
EC 228R, Flat Top, .000" Deck height,
w/.045" Thick Head Gasket 13.21:1
w/.032" EC Copper Head Gasket 14.16:1
EC 236R, Flat Top, .000" Deck height,
w/.045" Thick Head Gasket 13.66:1
w/.032" EC Copper Head Gasket 14.64:1