Crankcase Modification Honda Dio 120cc TWH Racing 54mm

Modified crankcase to fit 54mm cylinder and 52.6mm stroke crankshaft to increase engine size to 120cc
Details on how to do tuning the Honda Dio AF18E engine with your own hands.

0:01 Imitation cylinder gasket template
3:33 Marking the crankcase
4:34 Alignment of the cylinder with the crankcase
7:06 Markup boost channel
7:51 Cut boost channel
12:00 Crankshaft test installation
14:44 Refinement of the crankcase under the crankshaft 52.6
17:45 Increase main inlet
20:37 Intake manifold test setup
22:22 Inlet expansion
23:47 Test assembly of the engine
26:40 Checking the engine before the main assembly
30:28 Photos

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