A、进气门0.25-0.30mm,排气门0.30-0.35mm B、进气门0.30-0.35mm,排气门0.25-0.30mm C、进气门0.20-0.25mm,排气门0.30-0.35mm D、进气门0.15-0.20mm,排气门0.30-0.35mm
A、进气门0.25-0.30mm,排气门0.30-0.35mm B、进气门0.30-0.35mm,排气门0.25-0.30mm C、进气门0.20-0.25mm,排气门0.30-0.35mm D、进气门0.15-0.20mm,排气门0.30-0.35mm