Question on crank pulley

32sbct · Post by **32sbct** » Thu Oct 08, 2015 6:52 pm

My jeep is a 1952 M38 with a 1942 Willys MB chain drive motor. The engine was rebuilt back in 1979 but never run. I am in the process of checking everything over and putting in fresh gaskets. The motor has what looks to be an M38A1 double pulley. I noticed that it is wider (6.25") then the MB single groove pulley and the groove for the belt is more narrow then a standard MB pulley. The water pump looks to be original to the motor and has a wider pulley. Will using these two together cause any issues?

Thanks,

Marty

Post by **wesk** » Thu Oct 08, 2015 9:40 pm

If the two grooves that will carry your single belt are the same depth, width and angle and both operate in the same plane then no.