What are the valve clearances for a 2e 12 valve engine?

I have Toyota Corolla EE80 2E engine with 12 valves. I recently top overhaul but the engine is not running in perfect condition. The engine rpm goes up and down (engine shaky). I set the rpm around 1200, if i set it lower than that the engine will stop. I check the engine timing with both the cam and crank on the correct mark. Sounds like the carburetor failure but i had service it but still the same. If i turn the distributor to the right (******) the engine rpm drop, than i turn it to the left (advance) but the rpm drop too, as i know the engine rpm should raise high and could hear the pinking sound from the valves if the the engine accelerate. For your info, i bought the cylinder head from someone who previously general overhaul his engine about 6 months ago. He dismantle his engine because of con rod problem. I just fix the cylinder head to my engine without grinding and adjusting the valves because it had been grind and adjusted 6 months ago. I check the spark plugs but look all black. I pull the plug cable one by one during the running it sounds all ok. Now i wonder what is actually wrong with the engine? Do i need to adjust the valve clearance too? What is the valve clearance for both exhaust and inlet, hot and cold? If i do the valve adjustment and yet still the problem, what is next?

Need a carburator and vacuum diagram for my 2e engine corolla 1996 model big body.

They are in the hood white sticker. if the car was in an accident they may be gone, If you want give detail informatiion about the vehicle, year and model ( 2e 12 valve) dont help much.

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I have a 2e engine in my offroad race car, and i set my valve clearance for both inlet and exhaust while engine is cold at 0.003, if you set it with a gap any larger than that, it will give you noisy tappets