Sorry, when you put "restoration" in your original post, I wrongly assumed that the engine had been rebuilt.Hi all
Thanks all for your interest.
Peg- I haven't rebuilt the engine since I got the Bonnie- feels like I've fixed everything else though! I was well pleased when I got the engine going but back to square one now! I have a spark and think it is in the right place, the Pazon hasn't been touched since the engine was running. The fuel is new, 99 octane stuff. I've rechecked the valves, they're OK. I'll check the torque on the head bolts as you suggest and a compression test as well I think.