I’ve read even 90 lbs for head bolts. I cut the gasket for the oval shape inlet. The previous one was not cut and would have been restricting air flow.

So all went back together and it’s like a domestic. If you don’t love it you’d pack up and leave but cause you do you just readjust and move on.
Started it up after adjusting valves etc and the leak was coming out the radiator as it was before just a tiny little trickle just to piss me off. I was going to install another radiator thinking the top might be bent but tried a different cap which is for a recovery system and it slowed it down. Next I pulled the thermostat and checked it (rated at 88c) it opened fine in hot water from the kettle. So before installing it again I ran the car without the thermostat and not a single drip dry as. Checked I am putting it the right way round (knew I was right but hey) spring in the inlet manifold as it should be. So I went bugger it and drilled a 6mm hole in the thermostat to aid water movement. It leaks more when cold not hot so it leaks when their is little pressure from heat. If anyone wants to enter this domestic please go ahead. The water pump is fairly new. And it’s timed nicely at about 10 degrees with timing light ( car sticker says 6 degrees) and adjusted the fuel mixture with a vacuum gauge to max and back just a bit.
I’m stumped but still love the old girl.