three angle valve job

[ontheground]

Does any company make valves that are alreddy three angled???

 

[ontheground]

stock are three angled?? then what do they do at the machine shop when the say three angle valve job?

 

[philyphreak2127]

the valves themselves are 3 angled, where the valves are seated are shaved at 3 different angles to improve flow. it is easier for air to flow over a rounded surface then straight up then turn at a 90 degree angle.

 

[ontheground]

S
o then a five angle valve job the machine the valves and the seats or still just the head?

 

[TurboMirage]

dude

What is a "valve job" and when is it necessary? — Yahoo! Autos

typed in "what is a valve job" on google.