Posted by ScottyHOMEy on December 03, 2008 at 18:06:07 from (70.105.231.235):
In Reply to: cooling problem? posted by tooly on December 03, 2008 at 15:37:38:
I was shootin' from the hip earlier and have been ponderin' a little more.
If it is the valves, Jim N had the right idea -- a compression check would be the way to check that out.
It could also be cooling problems, though my experience is that sediment tends to build up from the back of those motors and #4 ought to be hot, too. It could be corrosion blocking the coolant in that area instead, though, instead of sediment, so it's all worth checking out. Burning out a section of the valve cover gasket would take some pretty extreme heat.
In that vein, another thing that's come to mind . . . I'm assuming that the valve cover gasket is burning out just on the left side, as the right is pretty well protected from extreme heat by the gap in the casting where the lift rods run.
Is it possible that you've got a hole in your manifold on the motor side. #1 and #4 exhaust have a long run getting to the spout for the muffler, but #2 and #3 come together pretty quickly and are close together. A leak on the backside of the manifold in the area where they come together, or just above where all four come together, if it were in just the right (or should I say wrong!) place, could scorch and have enough pressure to burn through a cork gasket pretty easily.
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