Chuck: Sure the crank is pulling the chain around the crank gear from right to left (looking at the front of eng) and it would be tight on the right side and slack on the left. Thats where the tensioner comes into play, however, the wobble in the lower left rail follows the chain as it bunches up. Like the track on a military TANK.

This rail moves quite a bit, not side to side, but LONGITUDENLY and follows the flex in the chain. All the other rails are FIXED on pins except this one which is rather LOOSE.

The more I dig into this engine the more I love it!

__________________
Gerry

59 Ranchero
83 928 Euro S
84 928 Euro S
87 300D Turbo-Frybrid "WVO, Tastes Great - Less Filling"
90 750 IL
91 560 SEL