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Thread Tools | Display Modes |
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#1
09-29-2012, 01:13 AM
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Bent a new valve?
So, while assembling my newly rebuilt motor, and prior to just resorting to the impact gun, I was having a heck of a time torquing the rear pulley bolt on the crank output to the spec'd 75 ft.lb. I resorted to an old trick I use for removing chainsaw clutches, which is to put the piston at the bottom of stroke, and feed a rope into the cylinder thru the spark plug hole.
Unfortunately, forgetting the relation of the spark plug to the piston and valves, I had rope on top of the valves when I ran the engine thru its first full cycle. There was some binding, but it turned over without an enormous amount of effort. Rope diameter was 1/4". What's the valve clearance on a K301? Any likelihood I bent one of my new valves? Engine fired tonight, and other than needing the governer and the timing adjusted (just started with 0.020" on the points), she ran okay. I believe the K301's did not get compression release until the K301B, and both of my motors are K301A's, although neither one shows squat on the compression tester when cranked by hand. 
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#3
09-29-2012, 08:40 PM
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Cool. Figured I'd do a leak-down test just to be sure, but she seems to be running strong. I do have a governor issue, but I'll post that in a separate thread.
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