Update on the built motor that failed. I had a tear in the intake duct next to the turbo band clamp, and the clamp was not tight - a maintenance issue.
Was running lean - and therefore hot - because of this, as you can see by the white in the turbine discharge. We saw the same white on the plugs.
Coolant and exhaust temperatures seemed normal (196/1100 F) - even at the track - and the intake duct tear never triggered a code (CEL). A little ironic in a way, because I have a Perrin turbo inlet standing by to go on this motor, but never got around to pulling the intake.
We'll take it apart shortly and I'll give you an update. Hopefully it is salvageable and I can use it as a spare. I seem to need one.
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