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Old 01-01-2020, 08:31 PM   #1
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Default ShovelHead connecting rods


I have a 71 Shovelhead that was redone a few years ago. its been burning oil I had someone do the heads last year and install new valve seals. it keep smoking after a while. I took the top end off, and the cylinders thinking it time for new rings. How can I check the connecting rods to see if there still good?
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Old 01-01-2020, 09:23 PM   #2
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Default Re: ShovelHead connecting rods

Crank pin at 3 o'clock as viewed from right side of engine, this area is were the most wear is from the power strokes. Measure side to side movement at top of rod. Limit is 3/32''.
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Old 01-02-2020, 04:51 PM   #3
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Default Re: ShovelHead connecting rods

you can take the front rod in your fingers and twist it in a circle - any thing more then a slight movement turning it back and forth - its due - new they have no movement in a finger turning circle -- yet are free / smooth to turn in the direction of rotation as you rotate the engine around
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Old 01-02-2020, 05:23 PM   #4
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Default Re: ShovelHead connecting rods

Agree with all the above. Up-and-down play on the crankpin is no bueno, too.

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