Started assembling the top end for the Golden Road Super Star. New Hepolite piston kits (std bore), newly sleeved cylinders. Piston to cylinder clearance? Check, good. Ring end gap? A bit tight, filed for .008" clearance. Installed right piston on rod, all good. Left piston, what the hell????? Wristpin doesn't go in far enough to install circlip. Looks like its up against circlip on the other side. Warm it up, remove wristpin and measure wristpin length and distance between circlip grooves. Not a great measurement, but wristpin looks to be about .010" too long! Make sure everything is clean (again), oil wristpin, heat piston, try to install (not on engine). Yup, the wristpin is too long, by just an rch more than the width of the circlip groove.
So............. Anyone have an idea what kind of tolerance I should allow for? I'm guessing this is not real critical, but I've never had to do this before.
Also, a while back, someone had a sleeve slip down. Seems to me it would be easy enough to drill and tap a hole in the cylinder skirt, dimple the liner, install a grub screw and grind it flush. The case mouth would prevent the grub screw backing out and the liner couldn't move. Worth doing or is this too rare a failure mode to worry about? Got these cylinders already sleeved with a truckload of parts, so don't have any idea who did the work.