If the 993 Turbo occasionally turns into a smoke machine, in most cases the turbocharger oil feed lines are the culprit because they drain back into the turbocharger when stationary. Rarely does bluing when starting the engine result from worn turbochargers and/or valve guides or because oil flows back from the turbocharger return line (although… the latter also happens, which is why we also offer the return line update with new siphon lines).
All 911 Turbos between 1975 and 1992 and from 2001 had technical solutions against this phenomenon, the 993, on the other hand, with the exception of the 993 GT2 Evo, did not take any measures to prevent the oil from flowing after the engine was switched off.
This kit replaces the standard line and is easy to assemble. Scope of delivery two pieces of valves including sealing rings and two pieces of oil lines including sealing rings.