There is some misunderstanding about timing the M30 motor. This FAQ should help the "I got the motor back together but it won't start" problem.
Below is a picture of the harmonic balancer with the crankshaft at top dead center. Note this occurs twice for every single rotation of the cam and distributor.
At TDC of #1 cylinder (compression stroke) the cam should be aligned as shown below:
Both valves on #1 cylinder should be closed (low spot on both cam lobes - this is important) and the distributor rotor should be pointed to #1 wire.
Timed like this, the engine should run. If idle is really low and smooth, it's likely you are one tooth off on cam timing.
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