48 8n rebuild

You should be able to tell which sleeves you have looking from the bottom, that is if there is a shoulder on the top of sleeve, as was the case with my 8n. It turned out my 0.090 sleeves got bored 0.040 instead of replacing. At the time the plan was to just re-ring, however I over did the honing and my machinist snarled in disgust, then capitulated to the bore job. You will want to check the bore for taper. A quick and dirty way is to measure the end gap with the ring in the cylinder. Use a piston to square the ring and measure the gap near the top and bottom of cyl (the cyl wears more at top). Or take the block to a machinist who will probably mike it for free. HTH

As for pistons I am going back with 3 ring vs the 4 ring that were in it. I am replacing valves and guides also. Have the crankshaft checked to see if it needs to be turned. Mine needed .010 on the mains and .020 on the rods. New bearings are a given while it is apart in my opinon. HTH

Ike