Cold exhaust, hot valve cover.

yellow rose said

How close is the header to the valve cover? Is that side getting oil to the top end? If not, that can make some heat. And kill parts.

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The header on the passenger side is the same distance from the valve cover as the driver side. It is getting oil. We have had the valve cover off multiple times to check lash and everything was getting oil. Also we primed the engine and cranked it over with the valve cover off and oild was getting to everything.

Another thing to note is I used a spray bottle with water to check the header temperature and the passenger side header was much hotter than the driver's. Water evaporated immediately on the passenger but lingered for a couple seconds on the driver's side.