I've finished the combustion chamber inserts and installed the cylinder head on the bike. The cylinder is now raised 0,5 mm by means of a 1,0 mm base gasket instead of the standard 0,5 mm gasket.
The exhaust- and transfer ports now line up much better with the piston now that the cylinder is raised. On the EC300 the transfer ports are shrouded slightly by the piston at BDC and lifting the cylinder helps a bit.
With my +0,5 mm insert the squish measures 1,24 mm around the edge of the piston and CCP (Cold Cranking Pressure) is up slightly (5%).
I have yet to ride the bike after installing the new head but may try to go for a spin tomorrow if it's not too cold.
Kent
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