84 911Valve adjustment
 

Hi
I need to know the valve adjustment clearance for my 1984 Porsche 911 targa.
and the tool I need to make this job, any other suggestion to verify my motor?
now the engine is open to change damage valve how I increase HP increasing the pressure?
The car for a bad gears set at high speed from 3rd gear at 100mph changes from 3rd to 2nd making a over rpms

Are you saying you money shifted and want to know if a valve adjustment will fix the damage?

Trying to understand your post -
The valve clearance will be the same no matter what else you may do to the engine.

I need to know the correct valve clearence

.1 mm