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Author Topic: Ring gap  (Read 873 times)

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Offline turkey4me

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Ring gap
« on: August 14, 2016, 04:57:36 PM »
Search tool is broken so I am posting a question on ring gap tolerance. 
78 CB750 F getting an 836 upgrade.  Had the block bored & honed by APE.  Installing Wiseco 65mm cylinders.  They're calling for a ring gap of 0.010" for the top and 0.013" for the bottom ring.  I'm checking ring gap and getting 0.013" & 0.018".  Anyone know if this is acceptable tolerance?  I assume wider is better than too tight.  Don't want to muck this up. 
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Offline turkey4me

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Re: Ring gap
« Reply #1 on: August 15, 2016, 04:23:51 PM »
I think the answer to my question is ring gap can't exceed 0.028". 
Now can can someone tell me what is the best oil to use
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Offline nicks2319

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Re: Ring gap
« Reply #2 on: August 15, 2016, 04:48:22 PM »
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Offline 70CB750

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Re: Ring gap
« Reply #3 on: August 16, 2016, 12:10:47 AM »
I femember reading article about measuring pressure between rings for different gaps, if i recall correctly, they stopped at 0.035" gap with only marginal increase inpressure and blow by.
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