Just got an email from turbo dynamics following on from inspecting my turbo -
"Hi Ben
I have the info on your unit.
Although there is a little wear to the ring seals , it is not enough to result in the scale of the oil leaking. There is oil leaking from both the turbine and the compressor end, this would indicate there is either excessive oil pressure or insufficient oil drainage. The exhaust housing is severely distorted and buckled, the waste gate no longer seals and the scroll has buckled to the point it has rubbed the turbine wheel. We also found damage to the turbine drive blades caused by impact from debris.
For 400BHP plus running a 0.86A/R turbine housing is a must. To achieve your goals of 450BHP we would also recommend changing the compressor to a 0.60A/R with a 3” inlet. Also if replacing the exhaust housing, a slightly larger turbine wheel can be used for a bit more power.
Rebuild including new larger shaft, new 0.82A/R turbine housing and new 0.60A/R 3” cover ?590.00+vat
We also highly recommend our metal cage upgrade replacing the standard plastic one to extend the life of the turbo. Normally £95 but as the unit is apart already we can do for £45. There is also the option for a billet wheel upgrade for advanced spooling £145"