Quick Question (MGB)

[mit-eddie!aerospace.aero.org!srt@EDDIE.MIT.EDU]

Someone answered this for me once before, but I somehow lost the 
message.  Does anyone know what size the nut is on the end of a '79
crankshaft (MGB)?  This is the nut on the pulley, ie., what I will
use to crank the engine over when adjusting the valves.  I'm getting
tired of using a big adjustable and scratching everything up.

E-mail is fine - thanks in advance...

                                        -- Scott