<BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by bfegypt:
OK,
Its like they had Microsoft design the engine for them!
<HR></BLOCKQUOTE>
No, they had Lamborghini help them with the cooling system design. Everyone knows the Italians can't design any engine to stay in the car for more than a few thousand miles at a time.
Seriously though - the block bores are countersunk. The removable liners (the actual cylinders) have a shoulder that rests on the countersunk block shelf with rubber o-rings above and below the water jacket to keep the coolant separated from the oil. The liners are shimmed to a specified height above the deck and the head and gasket seals them on top. If there's just a tad too much variation in the liner heights, this can cause varying clamping loads around the cylinders on a bank. The liners can begin to move slightly and wear the shims underneath. Next thing you know, the head bolts are loose, the gaskets disintegrate and you have trails of coolant emerging from between the block and heads.
It is a common problem with "wet liner" diesel engines to have a liner "drop" and repair requires an "in-frame" as a minimum. If corrected early, this is not a serious condition and doesn't require a lot of new parts. The engine will have to come out, the heads and oil pan come off and liners get pulled, but the cam, crank and probably the timing cover can stay.
Gen1 engine cutaway
