993 Turbocharger Oil Line Update
Porsche 993 Turbo smoking upon start up?
TurboKraft's oil line update package is the final solution to this common problem!
The most common reason a 993 Turbo smokes on startup is the turbochargers siphoning oil from the engine after shutoff. Rarely is the smoking at start up due to worn out turbochargers, oil draining back into the turbochargers from the crankcase, or worn valve guides / stems seals.
History and Technical Notes:
The 911 Turbos from 1976-92 and 2001 onwards were all equipped with components to counter this problem but the Porsche factory did not originally equip the 993 Turbo models with components to stop oil flow on shut off.
This problem was briefly addressed on the last editions 993 GT2 Evo models, but strangely not on the 993 Turbo road models. Instead, Porsche issued technical bulletins instructing dealer technicians to install specific oil filters to a specific torque value – which we found with experience does not solve the problem. Other "solutions" on the market address the oil return lines from the drip accumulators to the scavenge pump – which also does not usually solve the main problem of over-supplying oil to the turbochargers after shutoff.
Porsche’s own factory, GT2 Evo retrofit kit can solve the problem, but does not fit the street version 993 Turbo on the Bank 1 (cylinder 1-3) side turbocharger without modification to the valve or the turbocharger for additional clearance. The cost, procurement, and absurd price tag also make this an unreliable option.
The TurboKraft 993 Turbocharger Oil Supply Line System:
We have developed this package to be a complete, direct replacement and highly reliable system for the original turbocharger oil feed lines. The features of our kit address all other inherent weaknesses. Installation involves simply disconnecting and replacing the original equipment lines assemblies leading from the engine to the turbochargers. This kit is a must-do for all street and motorsport models, or for vehicles retrofitting new OEM turbochargers. If your model has the non-factory Borg Warner/KKK turbochargers, please contact us for supplemental parts advice.
Complete Package Set Includes:
: Check valve set - Stainless steel, designed for high temperature with low crack pressure. Lifetime warranty.
: Oil filter screen set - Fine mesh internal check valve screens inhibit debris from entering the turbochargers.
: Adapter fittings with seal rings - CNC-machined brass.
: Teflon oil line set - Stainless steel braided over Teflon with crimped fittings, pressure tested to DOT standards.
: Detailed fitting instructions
: Porsche 993 Bi-Turbo 1996-1998
: Porsche 993 GT2
: Porsche GT1
: Custom twin turbo projects
|Porsche Dealers and specialist shops welcome. Contact us for service labor appointments or expedited drop-ship services are available. These parts are always in inventory.|
We Also Recommend