How do you set timing on vauxhall 1.6 8 valve?

To set the timing on a Vauxhall 1.6 8-valve engine, first ensure the engine is at top dead center (TDC) on the compression stroke of the first cylinder. Align the timing mark on the crankshaft pulley with the timing mark on the engine block. Then, check that the camshaft timing mark aligns properly with the corresponding mark on the cylinder head. Finally, secure the timing belt or chain, and double-check all alignments before starting the engine.