Yeah, don't believe everything you read in magazines :D. I have seen pistons hit the head at .035 quench. At .030, the pistons can hit hard enough to close the ring gaps up and cause cylinder wall scoring. As close as your going to be running it, you can pound the bearings out of the rods and even bend some if you dont shut it off quick enough. Also, you loose piston to head clearance when the engine heats up, not gain it. So you will end up almost even .005 closer to the head than you are now....You need to cut your pistons before you damage your engine beyond being able to fix it.



Class III CNC Machinist/Programmer