Raceline Sump Drain Plug Thread Size ?

[slomove]

For a ZX1 Zetec engine. Anybody happens to know?

 

Also, did somebody try the Aeroquip Quick-Drain Couplings?

 

Thanks!

[slomove]

Found it is a rather old fashioned BSP straight pipe thread, that was used for the MG engines. Aeroquip does not have that thread. But, a drill and a 7/8" tap made it work:

 

http://lh6.ggpht.com/_242PlvPtVpE/TOCiQtkXqdI/AAAAAAAACLU/cxbP0HRxZ90/P1020488.JPG