Hi Well went back down garage this am, I went back to basic and first checked the valve timing again and it was a tad out so went round another hole (the ones that I drilled in it to allow tighter timing) on the cam wheel, now right on the nose at timing point. Then ensure the dizzy in the right place, all good within a degree or 2 for start up, Then checked the valve gaps again and blimey so far out it was untrue they were nearer 10 thou not 20 thou some were almost 8 thou. I can only think in all my adjustments that I forgot to re-gap after all the adjustments. Went through each one, marking the top with a dob of typex so I knew where I was up to. Double checked the timing again.
Connect Battery, put rocker cover back on, turn on ignition, turn on battery, lean down press solenoid on starter and, and , and it started first time. No noise, No rattles, a little fast on tickover so will probably have to reset carbs and ignition timing after xmas.
Let it run up for 15 minutes to get hot, still no prob's.
So moral of the story is do a checklist as you go along, double check every thing, listen to other folk, check again.
So thanks all who gave advice/ideas etc. Now don,t have to think of costly rebuild or retro fit another type of engine (the V8's will have to wait for another project).
Now if the consultant is good to me on new years eve and removes my pins from foot op I shall go the London New Years parade.
Cheers all and a merry xmas.
G