When adjusting valves on a 1986 22RE Toyota engine, the manual says to adjust intake to .008 and exhaust to .011 when the engine is "hot". I was doing some research and it seems to be a somewhat common practice to adjust valves on these engines to .007 intake and .011 exhaust when the engine is cold. The explanation being that the clearances will open up some when the engine warms up or gets to "hot". I always thought the clearances would get tighter as the engine warmed up but my "knowledge" is based on traditional pushrod engines and this is an overhead cam engine.
If adjusted cold, will the clearances get smaller or larger when the engine is hot?
And is it ok to adjust the valves cold?
And how hot is correct amount of hot if I adjust them according to the manual?