When i rebuilt the engine and took the head off it wasnt that great so got a refurbed one perfect no alloy rot like the other one but new valves, valves guides and valve stem seals but it had been sitting around in a mates workshop for a year and i know the works done got the receipts for the work. Would the valve stem seals dryed out in the year it hadnt been fitted. Its a fairly new turbo again bought off my mate sitting around a year and rebuilt by mountune and done less than 400 miles Is it common to have a problem of a re built unit as my mate had one blow on him 2000 miles after a rebuild.

Have run in for 300 miles used part synthetic oil due to change soon with millers racing oil.

When started from cold puffs a bit of smoke out after 30/40 seconds then clears.

Cheers

Ian