rebore
verb /ˈriːbɔː 
/ [with object]
/ [with object]Make a new or wider boring in (the cylinders of an internal combustion engine): the engine can be rebored without taking it out of the vehicle...
- This makes it possible to rebore bushings which have been used on the left side and reapply them on the right side, thus prolonging the life of the bearings.
- You had to rebush the rod if the slack was excessive, or rebore the big end if it was split - all of which you hoped could be deferred until the entire affair had to be dismantled for white-lead testing.
- At the same time the tube lines would examine new ways of peak fare pricing, new signalling, reboring tunnels and even building entirely new tubes.
noun /ˈriːbɔː /
/1An act of reboring an engine’s cylinders: a rebore and pistons would appear to be the answer...
- On stripping the engine, it needed a rebore, 4 new pistons with rings and new bearings.
- Rebores increase the engine displacement.
- Can anyone recommend a reliable shop to do the rebore?
1.1An engine with rebored cylinders.If it's a rebuild rebore, with the stock pistons, a machine shop might make the stock pistons work.