It appears you have already answered your first question.

Plunger Stroke
  • With ACSD: 0.44-0.56 mm (0.0173-0.0220 in.)
  • Without ACSD: 0.84-0.96 mm (0.0331-0.0378 in.)

Lastly your second question might be better answered by an engineer at Toyota.

Toyota 2L-II Engine

The 2L-II is an upgrade of the 2L. The cylinder bore and the piston stroke remains the same. The most significant change is that the camshaft lifts the valve directly via tappet instead of a rocker arm. The valve clearance is adjusted using shims.

The Toyota 2L produced from 76 PS (56 kW; 75 HP) at 4,000 rpm to 90 PS (66 kW; 88 HP) at 4,200 rpm of maximum horsepower and from 155 N·m (15.8 kg·m, 114.2 ft·lb) at 2,400 rpm to 165 N·m (16.8 kg·m, 121.6 ft·lb) at 2,400 rpm of maximum torque.