dry liners are usually quite thin and very hard
detroits 71 series used them and were about 3/16" thick, and were slip fit
interestingly the liners while available in oversizes, allowing the block to be bored and trued up, there were 3 fits on the standard liner, 1st, 2nd and 3rd fit
all with the same part number, 1st fit was the smallest liner of the tolerance, 2nd was the middle of the standard tolerance and the 3rd was the standard od that was still inside the tolerance but just barely. the way you tell one from the other was where the electoetch part number was on the liner, up under the lip was a first fit, above the ports was a 2nd fit, and below the port was a 3rd fit. selecting the proper fit made for a very tight liner and better heat transfer. inline 71 series engines were marked on the deck as to what fit liners were installed in each hole at the factory, v- series engines were not. never understood why.
you could not tell which fit liner was in a standard cylinder kit without opening the kit and pulling out the liner, parts guys hated this.
also 71 series liners had to be slip fit as the piston, rod, liner was all installed as a kit in the engine as the piston was to be never installed from the top, the oil rings would be damaged if they were allowed to go past the ports, so the piston was loaded from the bottom of the liner.
early mack engines such as the endt 675 and 676, were about 1/8" thick and hard as glass, and nearly as brittle, they were frozen in dry ice and slipped in quickly
all 6 had to be installed in under a minute, or the cold would shrink the bore next down the line, and you would have to stop and rewarm the block, later mack engines went to slip fit, and were still very thin and hard liners
most others i am aware of are press or shrink fit.
the use of these liners allows for some cool metallurgy to be used and induction hardening to get superior wear properties
on slip fit, the clearance is quite tight, most under a thou, about half a thou is a good fit, nothing is put on the liners, no grease, no oil or any other heat compounds
the heat transfer improves as the engine gets hot under load the liners swell and make good contact with the block. works well if fitted properly.
if the isuzu engines use liners, that would be a huge plus, enabling very long life, and in theory much longer than any other bore type especially if they are hardened liners
however they have to be installed.
bob g