The intake valve is always bigger than the exhaust valve because there is more volume going in to the cylinder than coming out.
because the inlet valve has to hold back pressure from the gas pump where as the exhaust valve has nothing to hold back but the compression of the ignited fuel and such a force is applied at the face of the valve. the face of the valve is in the cylinder so the force is a push not a pull meaning a bigger exhaust valve is not needed because the valve dose not have to fight back to keep it's self closed.
Better heat distribution. The exhaust valve sees a lot more heat.
It's not. Intake valves are almost always bigger.
need to no if the first valve is intake or exhaust The intake valve is always bigger than the exhaust valve.
Because much smaller than the exhaust air flow velocity, in order to reduce intake resistance and improve gas flow, to increase engine power! Some of the engine intake lift not only large, more than the intake valve (eg, five-valve, into the 3 row 2), valve diameter, but also large!
the exhaust valve will always be smaller as the piston is forcing the combusted gases out. The intake valves have to be bigger as the piston is only drawing the mixture in through sucktion.
look at the head with the valve cover off find where the exhaust manifold goes in tha is the exhaust valve or looking at the valves the first one is exhaust then intake then intake ,exhaust,exhaust,intake,intake,exhaust if you have the head off i think the intake valves are bigger than the exhaust
On a fully assembled engine, the intake and exhaust valves will not be visible. If the cylinder head is removed from the engine, the valves will then be visible. The intake valve faces are usually larger than those of the exhaust valves, and can be easily distinguished visually.
The exhaust valve gets hotter than the intake valve.
On most engines including the 22r/22re the intake valve is bigger than the exhaust.peace
The intake valve is always larger than the exhaust valve. It's just physics.