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07-31-2021, 09:19 AM #16Member
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I had just put the heads on recently and did not recheck tourque after running it. I ordered head stud kit for my 260 that I am assembling now.
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07-31-2021, 09:21 AM #17Member
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Loose head bolts at top cylinder. Just put heads on recently. I did not recheck after run time. Lesson learned.
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07-31-2021, 09:00 PM #18
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07-31-2021, 09:27 PM #19Screaming And Flying!
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I hear 35th to 40th is the accepted normal. I’m running tighter than that and have no kissing. I’ve run over 10,000 RPM a couple of times. I checked the squish with standard heads. If the squish is too tight you can take a standard head and cut a slight recess so there is no kissing. The head on the left is a standard 21cc O ring head. Notice the recess. The one on the right is a standard cut head which I will cut a slight recess, I’m pushing my luck running it so tight.
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08-01-2021, 12:59 AM #20
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08-01-2021, 01:53 AM #21Screaming And Flying!
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