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Hey did any you notice that it wasn't the turbo that actually got red hot? It was the exhaust manifold ahead of the turbo and the line to the wastegate; the turbo exhaust housing never glowed red though I'm sure it was also damn hot. Does this suggests significant backpressure in the header? since if the line to the wastegate got that hot it must have been bleeding exhaust gas to keep the boost from getting too high. If all the exhaust was just blowing out of the exhaust manifold and into the turbo housing, I think the turbo housing would get hotter than this one did, and the wastegate line less so.
Also, this hot turbo stuff is related to why about three of the plastic clips that hold my hood liner to my hood melted, and the "fire resistant" hood liner got scorched right above my turbo at a recent track day. So I used a large aluminum serving tray that the cafeteria girl gave me and made it into a heat shield and that solved my problem so I wouldn't have to let up.
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