need to no if the first valve is intake or exhaust The intake valve is always bigger than the exhaust valve.
The intake valve is always bigger than the exhaust valve because there is more volume going in to the cylinder than coming out.
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
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.
The exhaust valve gets hotter than the intake valve.
The intake valve is always larger than the exhaust valve. It's just physics.
On most engines including the 22r/22re the intake valve is bigger than the exhaust.peace
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 intake valve head is larger than the exhaust valve head
some of the gases are burnt and reduced befor going to the exhaust
The exhaust valve runs much hotter than the intake valve, so it has to be made out of a more durable(and more expensive) material. The intake valve can get by with a simpler and less expensive material.
The incoming fuel/air charge is bigger than the outgoing spent gasses.