Merlin 540 Main Bearing Clearance?
Just going to assemble my motor, Checked main bearing clearance and I have .004 on the mains. I am using a dial bore gauge to messure. Very reputable machine shop did the machine work, Line bore, who specilizes in race engines and manufactures his own aluminum rods, tells me this is where he builds them, some as hi as .005? What do you think. He does build and dyno's many race engines in our area. When I dropped off my engine there were 3 other Merlin blocks sitting on the floor waiting in line.
Thanks.
1 OTHER NOTE! The main bores are supose to be no more than 2.938 and they are 2.940, Crank shaft is a little fat so I end up with .004 clearance. But don't I lose some of the crush on the bearing with the larger bore size?