I am starting a swap of an '83 ZX motor into my '73. Does anybody know what the bolt size is for the main pulley. My largest socket is 24 mm and that isn't it. I need to buy a bigger one, so I'd like to just get the one I need.

TIA,

Marty

I want to say 27. I think if it is 27 than 1 1/8" will work. Probably more likely to have that size.

27mm on my '72.