First Start - Honda Super Cub C90 Bore Up to 97cc
2,084 views · Published 29 May 2018 · 3:53 · Indexed 22 September 2026
Channel: colinsk8s · 2018 · People & Blogs
This is the first start after rebuilding the top end of the engine with a Bore Up kit (piston, rings, and barrel) from a Daelim Citi 100. It increased displacement on my C90 from 85cc to 97cc without changing the connecting rod or cylinder head. You also don't have to change the engine studs or the cam chain because the deck height of the barrel is the same as the 85cc stock barrel (69mm).
