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Discussion Starter · #2 ·
Cylinder head Acorn Nut

Trying to confirm the cylinder head acorn nut size is M12 X 1.75? I would like to clean them up with a tap...have I know its a M12 nominal diameter, anybody know the thread pitch? Either 1.5 or 1.75...

Thanks!
 

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Discussion Starter · #3 ·
How to clean the acorn nuts?

Certainly someone has cleaned the years of crud off the acorn nuts and bolt studs with a tap and die. There was even a thread about oiling the acorn nuts and torque. I personally thought the oil was added so the nuts don't get galled to the bolts. These nuts are dirty and full of crud- that most certainly would affect the torque.
 
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