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Author Topic: Piston ring to cyl wall tolerance. .50 cycle x piston kit  (Read 1065 times)

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Offline 1974cb550k

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Piston ring to cyl wall tolerance. .50 cycle x piston kit
« on: March 30, 2012, 06:41:35 AM »
I just got my jugs back from the machine shop. I noticed they never removed the rings from the package to check the end gap in the piston rings. I am getting a reading of .012 in in the ring gap. on the compression and scavenger ring. Thoughts ? 74 cb750
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Offline 1974cb550k

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Re: Piston ring to cyl wall tolerance. .50 cycle x piston kit
« Reply #1 on: March 30, 2012, 07:00:42 AM »
Measured 1in from top and 1in from bottom. Honda says the servive limit is .0276in. Hondaman says .0008"/.0010 with a re bore. 
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Offline bwaller

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Re: Piston ring to cyl wall tolerance. .50 cycle x piston kit
« Reply #2 on: March 30, 2012, 07:28:06 PM »
That will be fine. What is the piston/cyl wall clearance?
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Offline 1974cb550k

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Re: Piston ring to cyl wall tolerance. .50 cycle x piston kit
« Reply #3 on: March 31, 2012, 07:53:36 AM »
Not sure. How are you supposed to measure the tolerance? Curved feeler gauge? I have the pistons in the jugs now is there any way to measure them without removal? thanks. Ken at Cycle-X said the ring gaps on his overbores are 0.012".
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