When you say burnt up ? Did the turbo locked up ? Can't spin the shaft ? If so it's a oil feed problem, take the oil line off going to the turbo and make sure it is clear, they can have a flapper in the hose that under pressure can shut the oil flow down. some engines have a check valve hooked into the oil line at the engine block then the oil line screw into it, check valve could go bad. when you replaced the turbo, you must pre lube the turbo with oil, just pour some oil into the fitting that the oil line goes to and spin the shaft, you will see the oil level in the fitting drop, won't take to much, make sure engine is off when spinning the shaft
. That's for the spark plug joke then let the engine idle for 3 mins or so before putting a lot of rpms to it.
If the shaft turns, but oil is going out the exhaust side, that's the oil seal, bad rebuild,
If the fins on the blades are chewed up, look for junk in the intake side.
If the first turbo came apart, the turbo spins at more then 1000,000 rpms and it will parts way up to the air cleaner, then it will work it's way back down,
Does this engine have a charge air cooler on it ? A big radiator that's between the intake manifold and the turbo ?