I have a 7” single groove crank pulley. As long as the crank pulley is bigger than the w/p pulley u will be fine. I have lots of 3 groove crank pulleys I could check. Kim
The trouble I am running into is, the alignment of the pulleys. I have a small wp pulley but my crank pulley doesn't line up. I was gonna get some shims.
Can you measure the depth of your 7" crank pulley, the single.