Damn oil drain plug

[Dynomite]

Originally Posted by WVZR-1

Hello Cliff - Engine Oil Drain Plug is by design a 9/16" HEX

Yes to the short pipe wrench suggested by Jerry if the OP has issues.

I have a few NOS Drain Plugs and maybe a couple of the Magnetic Inserted.

Hi Dave: I am always a bit different as you know
The Oil Drain Plug .................9/16 is .5625 inches (14.2875 mm)
The Battery Cable bolt .......... 5/16 is .3125 inches (7.9375 mm)

Just now I had to go out and confirm on two ZR-1s
For the Oil Pan Drain Plug the 14 mm actually fits just a tiny bit tighter than the 9/16 which is good.
For the Battery Cable Bolts to Battery Connection the 8 mm fits just a tiny bit more loose than the 5/16 which is fine.

Both the 14mm and 8mm flex head ratchet box open end wrenches are perfect for the set of Tools to Carry in the ZR-1

[WVZR-1]

Originally Posted by Dynomite

Hi Dave: I am always a bit different as you know
The Oil Drain Plug .................9/16 is .5625 inches (14.2875 mm)
The Battery Cable bolt .......... 5/16 is .3125 inches (7.9375 mm)

Just now I had to go out and confirm on two ZR-1s
For the Oil Pan Drain Plug the 14 mm actually fits just a tiny bit tighter than the 9/16 which is good.
For the Battery Cable Bolts to Battery Connection the 8 mm fits just a tiny bit more loose than the 5/16 which is fine.

Both the 14mm and 8mm flex head ratchet box open end wrenches are perfect for the set of Tools to Carry in the ZR-1

Yes I do know about the bit different LOL and having NOS drain plugs BUT having always used a 9/16 box end I had to take a NOS drain plug and try the M14 after seeing this thread. An M14 wouldn't fit the NOS drain plug. An older drain plug is quite likely a fit. It's been a few years since we discussed the battery terminal bolt hex requirements.

[Dynomite]

Originally Posted by WVZR-1

Yes I do know about the bit different LOL and having NOS drain plugs BUT having always used a 9/16 box end I had to take a NOS drain plug and try the M14 after seeing this thread. An M14 wouldn't fit the NOS drain plug. An older drain plug is quite likely a fit. It's been a few years since we discussed the battery terminal bolt hex requirements.

Ha....yep.....you know what I would do in the case of a NOS drain plug

I would take it to my grind wheel or even a flat file in a vice for about 10 seconds

That would then be MNOS....not a case of get the right tool....but a case of get the right Drain Plug

My best little modification is on the Belt Tensioner with a flat file (a 10 second modification) to allow this very cool Belt Tensioner Pulley to spin like crazy.
I do not like plastic stuff....DO like Billet Aluminum stuff (Oil Fill Cap, Dip Stick Handle, Belt Tensioner Pulley are examples)


I am NOT an NCRS person either