TZR250 3MA

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Y-2 Cylinder changing

TZR125 Track Bike > Cylinder/Head Changing's

Because the Y-2 cylinder is still performing lower then the Y-1 Cylinder I widened the exhaust port to Y-1 specification
The Y-2 cylinder in use is lifted 0,9mm all ports heights are the same as a Y-1 cylinder now.
But the ports from the Y-1 are also chamfered, so done this on the Y-2 cylinder to.

Left side chamfering transfers ports

Right side chamfering transfers ports

Here the slightly wider exhaust port

 
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