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Why did Honda use dome headed nuts on cylinder heads?

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McCabe-Thiele (Ted):
Whilst cleaning up my cylinder head nuts I wondered why use dome headed nuts when you can't see them - why not just use a full nut?

Nurse Julie:

--- Quote from: Macabethiele (Ted) on September 21, 2021, 07:21:32 PM ---Whilst cleaning up my cylinder head nuts I wondered why use dome headed nuts when you can't see them - why not just use a full nut?

--- End quote ---
They are fitted to stop the oil running back down the thread Ted.

McCabe-Thiele (Ted):

--- Quote from: Nurse Julie on September 21, 2021, 07:27:57 PM ---
--- Quote from: Macabethiele (Ted) on September 21, 2021, 07:21:32 PM ---Whilst cleaning up my cylinder head nuts I wondered why use dome headed nuts when you can't see them - why not just use a full nut?

--- End quote ---
They are fitted to stop the oil running back down the thread Ted.

--- End quote ---

Thanks Julie, I thought there was a reason but had no idea what -Honda ingenuity strikes again.

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