FastKat

iTrader: (10)

From what I understand, part of the purpose of the valve to valve seat contact area is to distribute heat from the valve to the rest of the head, preventing overheated and distorted valves. I understand this is slightly more important on a supercharged engine. Does getting a valve job done on a set of heads reduce this contact area? If yes, is this reduced contact area a problem for supercharged setups?

LLLosingit

iTrader: (4)

A valve job done right will not change the valve to seat area. A performance valve job will help air flow by way of angles cut on the seat and the valve itself. If done correctly the angles cut into the valve and seat will match so the contact area doesn't change.