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Engine block drain and plug

N

narcosis

Member
Any ideas out there about the

Any ideas out there about the brass plug used for engine block drains. I currently have a 1/4 NPT brass plug in each side of the engine to drain the block while winterizing the engine. Mechanic is a little concerned that the threads into the engine block look a little worn. Any thoughts about taping out for a slightly larger plug.
 
"NPT is a tapered thread, run

"NPT is a tapered thread, run the 1/4 tap in a couple of extra turns, should freshen up the threads, might have to use a bottom tap for clearance issues,"
 
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