Old engine block cracked:
Old engine M10B18 out, new engine E21 M10B18 in with bigger intake and exhaust valves.
Cut and weld intake manifold
Engine running:
BMW E30 M10B18 316 to bike carbs
Old engine block cracked:
Old engine M10B18 out, new engine E21 M10B18 in with bigger intake and exhaust valves.
Cut and weld intake manifold
Engine running: