I had never heard my engine running. Bought the donor with a snapped cam belt. Why is it a non runner? Already stripped from car, or is there something else wrong with it? (Other than hole in sump).
If doing full strip down I would check the following things.
1. Head for belt valves, burnt valve seats. Replace valve stem seals anyway.
2. If the cam followers can be compressed by hand then they need replacing. (Two of mine where knackered.)
3. Check cam lobes for wear.
4. Check bores for scoring. Piston rings breaking up is a known fault with these.
5. Piston wobble. If excessive, might need rebore & oversize pistons.
6. Crank should rotate freely with head off. If notchy further strip down required. Could be main bearings gone.
I must add I am not a mechanic, a mate of mine rebuilt the engine for me. Started first time when we tried it.
See below link for youtube video. Bit blurry, taken on mobile phone.
http://www.haynes.co.uk/forums/showthread.php?t=2739
Hope this helps
Mark