From: Vaughan
Email: vscott77@nospam.hotmail.com
Date: 18 Jul 2001
Time: 08:39:17It's 36mm, get a 36mm 3/4" drive socket and a 3/4" breaker bar. Anything less than that you stand a high chance of just snapping. You will need a 4' piece of good pipe also, to slide over the end of the breaker bar. Plus someone to stand on the brakes while you crack it loose.
I recommend, remove the wheel, remove the cotter pin, reinstall the wheel without center cap, put the car on the ground so it's stable, then break the nut loose. It's a couple of extra steps, but safer the first time.