Crank scrapers or plate...?

For the scraper crowd, what percentage of the crank surface (that carries oil) is getting wiped? When I got the bottom end balanced, the guy added a fixed tolerance for oil weight. In looking at a block on a stand mains up. You can wipe the horizontal edges of the throws easily, where else does it wipe?


It depends on the scraper. I used the Teflon scraper and it self fits. You trim it until the crank, rods and rod bolts are rubbing the Teflon. Then as the engine runs it makes its own clearance, which is essentially zero running clearance.

Have you been to the IJ web site? There is pictures of literally dozens of scrapers and even pictures small block Chrysler scrapers.