Misperception

It is a matter for regret to describe like this, it's nothing but my own shame to have been on my misunderstanding by frivolous belief. Because AD motor on VW 1302 Super Beetle with the construction of Over Head Valve design has long valve pushing rods, the valve clearance adjustment does not require the precisions just without too much tight clearance, there exist not a few uncertainties in OHV engine valve clearance adjustment. Consequently, I regarded the adjustment on it might requires precise one compared with some direct hitting in OHC motors. But, the adjustment applied on only on left side bank of AD motor causing hitting noise had completely changed my selfish perceived notion, the performance of the motor had far improved incredibly after that, of course the valve hitting noise disappeared. Torque and transition at every rotation and idling stability have become so smooth and powerful like after the motor replacements into new one. Also, valve lifting values on every cylinder and combustion state with aligned grains has most to do with the motor performance as a common sense. As left bank had done yesterday with a better result, so today the right bank of 11 motor hoping the best one.