Matching Pistons And Rings - Engine Builder Magazine

piston88Because K20 and K24 heads all share the same 50.5cc combustion chamber volume, the compression ratio will stay the same regardless of whether you these pistons in a K24 blockI'm putting my 86 ATC 250R back together and have both an 86 and 88 cylinder. All things being equal, is one better than the other? I can see minor differences between them.