Yamaha 2010 YZF-R6 User Manual

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Measuring the volume of the cylinder head combustion chamber
TIP
To obtain the highest performance for race use, the four cylinders should be uniform.
If you modify the head cylinder, always measure the combustion chamber volume and
do the work based on the measured value.
Measure the volume of the combustion chamber of the cylinder head (commonly called the
dome volume) as follows.
Measuring equipment
1. Burette
2. Glass plate
3. Oil (3:1 mixture of torque converter oil and white gasoline)
4. Vaseline (to seal the valve and glass plate)
Measurement method
1. Tighten a regulation spark plug to the regulation torque in the cylinder head to be
measured.
2. Set so that the alignment surface of the combustion chamber is level.
3. Apply a thin coat of Vaseline to the valve face and set the IN and EX valves.
4. Apply a thin coat of Vaseline to the combustion chamber alignment surface and set the
glass plate.
5. Add drops of oil from the burette. The total added amount minus the valve back clearance
is the volume of the combustion chamber.

Yamaha 2010 YZF-R6 Specifications

General

Bore x Stroke	67.0mm x 42.5mm
Compression Ratio	13.1:1
Fuel Delivery	Fuel Injection with YCC-T and YCC-I
Ignition	TCI: Transistor Controlled Ignition
Final Drive	Chain
Rear Brakes	220mm disc; single-piston caliper
Front Tire	120/70-ZR17
Rear Tire	180/55-ZR17
Length	80.3 in
Width	27.8 in
Height	43.1 in
Seat Height	33.5 in
Wheelbase	54.1 in
Fuel Capacity	4.5 gal
Wet Weight	417 lb
Engine Type	Liquid-cooled, inline 4-cylinder, DOHC, 16 valves
Transmission	6-speed
Front Suspension	41 mm inverted fork; 4.7-in travel
Rear Suspension	Single shock; 4.7-in travel
Front Brakes	Dual 310mm disc; radial-mount 4-piston calipers