512 B Underway
Wanted to show what I feel is important and easily overlooked. Using studs everyone knows to drill out the #3 cap holes to 17/32" in order to give the thrust cap some fore/aft movement, but sometimes in the machining process it just gets torqued down and off we go. I've been guilty of this a time or two. It's not critical to align the thrust faces when just line honing but its still nice to do--If you are line-boring and doing anything with the thrust face it becomes critical. Here I just torque the cap to about 50ft/lbs and tap it back and forth with some aluminum rod until I can't feel the cap to block interface. Here the ARP studs call for 110ft/lbs after alignment. After a bunch of cap and block prep the main bores are honed to 2.8178"-2.818"--crank should spin nicely. Oh and its also a good time to address the sharp edge at the bottom of the bores left after boring. J.Rob
Wanted to show what I feel is important and easily overlooked. Using studs everyone knows to drill out the #3 cap holes to 17/32" in order to give the thrust cap some fore/aft movement, but sometimes in the machining process it just gets torqued down and off we go. I've been guilty of this a time or two. It's not critical to align the thrust faces when just line honing but its still nice to do--If you are line-boring and doing anything with the thrust face it becomes critical. Here I just torque the cap to about 50ft/lbs and tap it back and forth with some aluminum rod until I can't feel the cap to block interface. Here the ARP studs call for 110ft/lbs after alignment. After a bunch of cap and block prep the main bores are honed to 2.8178"-2.818"--crank should spin nicely. Oh and its also a good time to address the sharp edge at the bottom of the bores left after boring. J.Rob
