Plasti-gauge is bascially a piece of wax. You lay it on between the main bearing and the crank journal, then torque the main bearing down. Then remove the main bearing and use the gauge that comes with the plasti-gauge to see how much the wax expands. That will tell you the clearance. I'm thinking you should have between .001 and .003 but check the books.
Here's a pic.
plasti gauge The good part is that you can pick up a plasti-gauge at any parts store for about $3.. or less!
Hope this helps
