The sleeves aren't all that expensive- - - -the machining to install them is. I salvaged a lot of my competitors' "worn-out" blocks by sleeving all the holes back to standard bore, until some of them figured out they were getting beat by their own junk! All the other machining was still in good shape on those blocks- - - -the line boring, decking, etc.- - - -they just figured a 60 or 80 over block was not useful any more. I bought those blocks for pennies on the dollar (or they gave them away) and I used them for training my students how to bore cylinders. The end result was a good supply of round track engine blocks at very low cost.
Jerry
