Got an "8BA" Truck Engine, want to check the torque on the "Crank Pully Nut" ( appears the pully is loose), I understand the torque is 45 ~ 55 ft lbs, I read on one site it's an 1 3/8" socket, that appears incorrect as my 1 1/4" is to big & 1 1/8" is to small, I'm assuming it's 1 3/16" but...