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Old 04-11-2018, 09:31 PM   #5
Drive Shaft Dave
Senior Member
 
Join Date: Dec 2011
Location: New hope Minnesota
Posts: 742
Default Re: What is this nut on the right side of the engine block?

It Is not a nut it is a plug, the thread is 1/8 - 27, it does not have to be slotted, a hex head plug of the same thread will work. It is a fine thread.

Last edited by Drive Shaft Dave; 04-11-2018 at 09:44 PM.
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