I dont know what a stem engine is but a steam engine is a train that runs on coal
The recommended valve stem length for optimal performance in a car engine is typically determined by the engine manufacturer and should be followed according to their specifications.
nothing
Tom Thumb
The lifter bucket, which is on top of the valve stem, and the spring in the Overhead Cam engine aides in adjusting the valve clearance.
Tappet
Tappet
The Air conditioner low pressure stem is on the accumulator (silver cylinder), which is next to the firewall on the passenger side of the engine compartment.
Valve Stem Seal are designed to make sure no oil will spill into the engine piston as it eat the gas coming from the Fuel injector through the exhaust manifold.
Under the cover of the engine it looks like valve-stem it has and it's about the same size
How do you replace valve stems and guides on a 1989 Jeep 4 Cylinder engine?
negative stem is the opposite of positive stem
That space is called "valve lash". It is a predefined gap set on a cold engine when the rocker arm is on the base circle of the cam.