Grounding Stud on Engine Block

[ItchyDong]

Does anyone know the size of the grounding stud on the right side of the engine block? I’m going to replace battery and battery cables/grounds and the ring terminals are spinning with the stud. I’ve tried holding the stud and loosening the nut, but she wants to come out as one piece. I’ll keep hitting them with penetrant but in the meantime I’d like to have a bolt on hand if I end up just cutting them and crimping a new ring terminal.

 

[JEEPCJTJ]

I’ve tried holding the stud and loosening the nut, but she wants to come out as one piece.

If I'm reading this right, the stud/nut combo has become the bolt.

 

[Morks]

You need an e-Torx socket for the stud end and a wrench on the nut. After spinning the whole assembly the first time and ruining one connection I tried with a vice grip And slightly damaged the stud, forgot I had the e-Torx to match the stud size, and came off with no issues!

 

[YoungLJ]

I tried the same thing a while back. I ended up leaving it, clipping the old battery ground cable, and adding the new ground to the end with another nut.

 

[ItchyDong]

You need an e-Torx socket for the stud end and a wrench on the nut. After spinning the whole assembly the first time and ruining one connection I tried with a vice grip And slightly damaged the stud, forgot I had the e-Torx to match the stud size, and came off with no issues!

Yeah I have the e torx and tried holding it. She’s STUCK

 

[Morks]

I'd just heat the nut and if you have to redo the connections it's easy enough to solder them up!

 

[Zorba]

I ended up cutting the wires and re-terminating. Holding the stud and turning the nut - if you can do it - will work. There is a shoulder on the bolt, behind the ring terminal stackup:

New stainless 5/16" bolt and the terminal stack mockup (Note star washer on backside):

In place:

YMMV and all that.

 

[Apparition]

I held the stud with a torx and promptly snapped the torx end right off the stud. I then cut the cable and sold the engine.

 

[ItchyDong]

thanks for the help fellas. A few days of squirting with penetrant while engine was hot and she finally loosened up.

Got new battery and cables installed.

 

[L J]

I held the stud with a torx and promptly snapped the torx end right off the stud. I then cut the cable and sold the engine.

no better reason for an LS swap

 

[Apparition]

no better reason for an LS swap

‘Twas the initial reason to remove wires from said stud.