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Re: Farmall H cylinder head
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Posted by Stan(VA). on September 01, 2005 at 05:31:28 from (4.248.35.219):
In Reply to: Farmall H cylinder head posted by SCK on August 31, 2005 at 16:52:27:
SCK, One thing I'd recommend to check (before pulling the head again) is your rocker arm side clearance. I had a similar problem on my Super H, it burned #2 or #3 exhaust valve, and turned out to be lack of clearance between the rocker arm, center oil sleeve, and one of the lever brackets. The trick was it didn't show up until you torqued the whole rocker arm assy down. For #1, it would be between the rocker arm, the lever bracket, and the expansion plug or snap ring (whichever is on that end). I would turn the motor to TDC on that cyl, and verify that you can easily rock the arm enough to feel the .020 clearance with your finger. On mine the rocker would move around fine until the shaft was torqed down, then got very difficult to move the arm. It was just enough that the valve would open and close, but as the engine got hot, and clearance went to it's min, the valve wouldn't close all the way. If you have a simialr problem, I had to disassemble the rock shaft and mill down that rocker arm bushing a little on the side to open up the clearance then the valve worked fine, and doesn't require pulling the head again ;) Just a thought, Stan(VA).
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