Quote:
Originally Posted by fanaudical
Gaps change as temperature increases, but there still needs to be a gap when hot. That is the only way that the valve completely seats in the head, which then allows the heat in the valve to conduct away into the cylinder head (thereby cooling the valve).
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Right, so if I do 0.002" at cold, it should be greater as it heats up and not be an issue.
Someone here posted years ago that the gap increased to like 0.008" when tell engine fully hot discovered by a reputable mechanic/Porsche crew member.
I would think there would only be a problem if you had the rocker lash adjusted to the point the valves were lifted from the seats at 0.001" or more?
To Steve's point, the face of my valves (opposite side of stem) looks white. This might explain it, but I'm trying to figure how if I in fact have a gap.
Sorry for thinking out loud here....
