Kawasaki zx-6r 用户手册

 

If you don’t adjust the valve timing for racing, install the camshaft sprocket to the kit 
camshaft using the round bolt holes and adjust the cam chain timing according to the 
Ninja ZX-6R Service Manual. If you adjust the valve timing, install the sprocket to the 
camshaft between the adjustable range of the long bolt holes. 

 

Tighten the camshaft sprocket bolts to 15 N·m (1.5 kgf·m, 11.0 ft·lb) of torque. 

Timing (cam lift center) 

Intake 

Exhaust 

Original 105° 

110° 

Race use 

105° 

110° 

 

When grinding the cylinder head bottom surface, grinding the cylinder top surface or 

using thinner gaskets, be sure the valve to piston clearance especially. 

 

When using the sprocket long bolt holes and adjusting the valve timing to be different 

from the standard timing, check the valve to piston clearance of all cylinders after 
adjusting the valve clearance correctly. 

Intake 0.8 

mm 

Exhaust 1.4 

mm 

If the valve to piston clearance is less than the minimum value, do not start the engine 

because the valves will touch the piston and the engine may be damaged. 

 

Measure the valve to piston clearance at about 12° ATDC (Intake) and 11° BTDC 
(Exhaust) of crankshaft timing. At this point, the valve to piston clearance will be 
minimum. 

 

The original machine’s valve springs should be used 
. 

 

To adjust the cylinder compression, adjust the thickness of the cylinder head gasket and 
the cylinder base gasket or smooth the cylinder top surface to make the piston squish 
0.65 ~ 0.8 mm. Keep the piston squish more than 0.65 mm. 

 

Position the piston at Top Dead Center, and put a small piece of modeling clay on the 

shoulder of the piston. Install the cylinder head gasket and cylinder head, and tighten 
the head bolts to the specified torque. 

 

Remove the cylinder head and measure the thickness of the clay. The thickness of the 

collapsed clay is the size of the squish. 

[1] Front and Rear 

0.65 ~ 0.80 mm 

[2] Left and Right 

0.67 ~ 0.85 mm 

 

The most preferable squish measurement is [1] 0.65 mm/[2] 0.67 mm. 

 

Select proper cylinder head gasket and cylinder base gasket. 

 

Note that by grinding the cylinder head surface only left and right squishes become 

narrower, while by grinding the cylinder top surface or decreasing the gasket-thickness 
all the squishes become narrower. 

 

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