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Connecting rod big end bearing nut and locking nut

Posted By Kennykiwi 11 Years Ago
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Kennykiwi
Question Posted 11 Years Ago
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Kiaora, I am assembling my 292 engine and I am wondering about the thin locking nuts that screw on top of the Bigend bolt nut. I have tightened the nuts to 45ftlb. Do I nreally need to reinstall the thin spring type hexagonal locking nut. OK I'll confess, I lost one and cannot get one to replace it. So is it ok to reuse the ones that I have or do I really need them at all? and what torque setting should they be tightened to.

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Jimz Bird
Posted 11 Years Ago
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Here is what the new Y Block book states.
http://forums.y-blocksforever.com/uploads/images/31a45769-c002-4daa-bd04-89d9.jpg

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Jim
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Kennykiwi
Posted 11 Years Ago
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Thanks Jim, I wonder if that last sentence is supposed to say "even if Reusing the Old connecting rod bolts and nuts" ??
So, I guess that means I don't need them?

Cheers

ken
Ted
Posted 11 Years Ago
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Pal nuts as used on the connecting rod nuts are a one time use only item.  Because they get distorted when originally tightened, they must be replaced if contemplating putting a set of them back on an engine upon reassembly.  Because of this, they are typically just left off when the engines are serviced.  A properly tightened connecting rod bolt will not need any kind of jam nut to keep the fastener from loosening.



Lorena, Texas (South of Waco)


Kennykiwi
Posted 11 Years Ago
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Thanks Ted.


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