The question says it all. Besides the displacement difference (173cc), it seems the only difference is the heads:
2.6 (CR 10.3:1)
Valves I46/E40
Ports I36/E35
Combustion chamber 68cc
2.8 (CR ?)
Valves I49/E41.5
Ports I39/E35
Combustion chamber 90cc
I’d like to know which is a more potent engine in terms of power band, torque, responsiveness, and characteristics.
TIA
