All draw-thru Turbochargers need a carbon face seal between the compressor wheel and the CHRA (Compressor Housing Rotating Assembly).
The oil comes out of the CHRA, leaks at the compressor housing which has no gasket there, (just a slip on fit with fasteners) and drips onto the Valley Pan. Whoever did the rebuild on the Turbo, (ask them if they replaced the Carbon Face Seal that is stock on those turbos). Turbos have not had carbon face seals for at least 25 years.
The seal is typically located under the compressor wheel and between the wheel and the cast iron drain housing.
Tom V.
__________________
"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
|