10-19-2010, 01:19 AM
I need the sizes for the crankshaft bolt and the bolts that go into the crank hub for a March underdrive pulley. Any help is appreciated.
10-19-2010, 01:27 AM
Just bring your bolts to ace hardware or comparable and bring your pulleys with. Make sure its grade 8 and atleast sticks out 1/2" further. Its a 7/16*14 I believe
11-06-2010, 10:10 PM
I know I'm in this thread way late. I couldn't find the exact length, but I used 7/16-14 x 2.5" long. I put two washers under the head, and they cleared the opti.