Re: Blown Head Gasket
If there are pits in the heads these will need ali welding prior to skimming. This should not be expensive if you shop around. Also some head gaskets are better than others, good examples will have a wider metal band that seals the cylinders. There was a supplier who advertised in Auto Italia a while ago and they sold superior gaskets (or so they said). I've done the head gaskets twice on my 33 in 12 years and if yours is 1.7 8 valve it can be done in situ. Have plenty of clean cardboard boxes, plastic bags etc. for parts. Drain water using the plugs under the cylinders, remove air cleaner, carbs etc, exhaust pipes-don't forget attachment to rear of cyl head, radiator. grill, alternator and cam belts, undo front engine mount and you will be able to swing engine from side to side to gain access to cyl head bolts.
The very thin plastic gaskets for the head/cam carrier joint are delicate so take care when replacing these. If you have hydraulic valve adjustment make a note of their position so as to ensure correct positioning when replacing.
To remove water pump be prepared to be brutal but careful! I used a woodworking chisel to break up the old pump (not the proper use I know), the aluminium is rather brittle. As a result of electrolytic corrosion between the Al of the pump and the Fe of the block it really does get stuck fast.
Reassembly is fairly straight-forward as long as you take time and have everything spotless.
You might as well replace the camshaft oilseals at the same time, especially if you've bought the top=end gasket set.
Torque the bolts to spec.