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[Kevin Wood]

On any 4 pot engine, you will have 2 pistons at TDC if any are.

TDC no. 1 will put cylinder 1 at TDC and with the valves closed, but no. 4 will be at TDC on the exhaust/intake crossover, which means valves partially open and you don't have to turn the cams far to get valve damage.

On any 4 pot, regardless of the instructions in Haynes, etc. I'd strip and rebuild with the crank at 90 degrees before TDC no.1, so all 4 pistons are half way down the bores.

On reassembly, time the cams correctly for TDC No. 1, then the last action before installing the belt is to turn the crank back up to TDC no.1. This way, as you wrestle the cams into the correct position, there is no chance of valves hitting pistons.

[Marks DTM Calib]

This ^^^^^