| If it's a rebuild rebore, with the stock pistons, a machine shop might make the stock pistons work. |
| A typical rebuild is new pistons, rods, main and rod bearings, piston rings, and a valve job. |
| On stripping the engine, it needed a rebore, 4 new pistons with rings and new bearings. |
| Children wonder at the crossings as the light-blinking boom-gates close for the pistons. |
| This type of exhaust also significantly reduces the excess gasses after each exhaust stroke of the pistons. |
| At such high revs, the pistons will be doing a super job of abrading the cylinder walls. |
