the reason you adjust valves.

1. too little clearance will cause the rocker to be constantly wearing on the cam lobe causing increased wear and heat.

2. too little clearance will cause the valves to be open during the combustion cycle causing lower compression and possible valves being burnt.

3. too much clearnace will cause increased cam wear and additional noise.

4. too much clearance will cause less valve lift. meaning better idle but much less proformance.

__________________
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac?

As long as they would add one additional commandment for you to keep thy religion to thyself.
George Carlin (Wonder where he is now..)

1981 240d (engine donor 1983 240d) recently rebuilt engine hurray! - No more.. fought a tree and the tree won.

pearl black 1983 240d 4speed (Converted!@$$%) atleast the tranny was rebuilt.