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18cc Non-Hemi 32/27mm 5mm Big Valve Head - No Porting
TIL-1BV18 18cc Tillotson Big Valve Head
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18cc Non-Hemi 32/27mm 5mm Big Valve Head - No Porting

Part Number: TIL-1BV18-2
Your Price: $185.00
Availability: Out of Stock.

Description

EC Big Valve Head with 32mm Intake and 27mm Exhaust 5mm Valves using the Tillotson JT-207 Cylinder Head. 

The Head Comes with 32mm Intake and 27mm Exhaust Valves; 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 happens in the cylinder. The Heads Milled to ~18cc Combustion Chamber Not ported, call for porting. Springs, Retainers, Rockers, Gaskets, Seals, or valve cover are omitted. 


Head Specs:

Intake: 32mm, 5mm

Exhaust: 27mm, 5mm

Combustion Chamber: 18cc, Non-Hemi

Multi-Angle Valve Job


Compression Ratio Examples(Final Result will vary on Engine Measurements):

Predator Hemi, Flat Top, .035Deck height,

w/.045Thick Head Gasket 9.22:1

w/.010Thin Head Gasket 10.48


Tillotson 212, Flat Top, .000Deck height,

w/.045Thick Head Gasket 10.48:1

w/.010Thin Head Gasket 12.19:1


Tillotson 225, Flat Top, .000Deck height,

w/.045Thick Head Gasket 10.87:1

w/.032EC Copper Head Gasket 11.49:1


EC 228R, Flat Top, .000Deck height,

w/.045Thick Head Gasket 11:01:1

w/.032EC Copper Head Gasket 11.63:1


EC 236R, Flat Top, .000Deck height,

w/.045Thick Head Gasket 11:37:1

w/.032EC Copper Head Gasket 12.01:1

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