Posted by Jerry/MT on May 27, 2013 at 08:17:35 from (206.183.116.145):
In Reply to: Valve questions posted by James (TX) on May 26, 2013 at 18:23:42:
Bent push rods are common on engines that thave sat unused for long period of time. The oil and combustion products combine to make a sticky mess that sticks the valves in the valve guides and the cam forces trying to lift a stuck valve will cause the pushrod to buckle. This is independent of poor oiling of the rocker arms and valve stems.
When I re-did the head on my TO-30 I had several bent push rods and luckily I was able to find some straight, used ones. The push rods can be straightened by tapping them carefully with a hammer on a flat surface and any remaining deflection in the push rod "adjusted out "but it"s best to replace them with straight ones if you can.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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