Connecting rod big end bearing nut and locking nut

Connecting rod big end bearing nut and locking nut

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By Kennykiwi - 11 Years Ago

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.

Cheers

By Jimz Bird - 11 Years Ago

Here is what the new Y Block book states.

http://forums.y-blocksforever.com/uploads/images/31a45769-c002-4daa-bd04-89d9.jpg

A note on adding images: When I selected it - clicked once - and clicked open it did not show up.
I double clicked the image from the Browse box and it did. Go figure???
I had to Snagit the image and save it as you can't copy from the ebook. Or print.
I really dislike Google Play. My wife has a Kindle Fire and it works great with ebooks.
I am on Firefox.
HTH

By Kennykiwi - 11 Years Ago

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

By Ted - 11 Years Ago

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.

By Kennykiwi - 11 Years Ago

Thanks Ted.