Following an internal investigation prompted by two such incidents, Porsche has confirmed that is has identified the problem as resulting "from a loosened screw joint on the connecting rod." The loose connecting rod, Porsche found, damaged the crankcase, which in turn resulted in oil leaking and then – in at least two cases – igniting.
In order to fix the problem, Porsche is replacing the engines entirely on all 785 affected units of the GT3, fitting these new engines (as well as new models to be built once production resumes) with "optimised screw fittings." Our source at Porsche indicates that under 200 of the affected coupes actually reached customers – most are at port (where they will be fixed prior to reaching showrooms), or at dealers.
Our source is unaware of Porsche being contacted by GT3 owners concerned about the impact of a replacement engine on their car's collectibility or resale value.
We also inquired as to whether Porsche had fielded any calls from concerned GT3 owners regarding the replacement engine's potential impact on their car's collectibility or resale value, and our source told us that they have not heard of owners raising any questions. Should such a scenario arise, we were told that, "The company will handle the customers on a case-by-case basis. All of this will be documented in the vehicle's history file that's maintained by Porsche." Presumably, if there is clear and extensive official paper trail about the engine swap, would-be used GT3 buyers and collectors would be happier knowing their car is fitted with a correct, trouble-free engine than they are about not having a numbers-matching car.
It is not immediately clear what Porsche plans to do with the hundreds of recalled GT3 engines once it extracts them.
Porsche to replace engines of current 911 GT3 models
Stuttgart. Sports car manufacturer Porsche will be replacing the engines of all 911 GT3* vehicles of model year 2014. This is the corrective action derived from intensive internal analyses that were initiated in response to two engine fires. Meanwhile, it has been confirmed that engine damage resulted from a loosened screw joint on the connecting rod. The loose connecting rod damaged the crankcase, which in both cases led to leakage of oil which then ignited.
After becoming aware of the two cases, Porsche promptly took action to avoid any risk to customers by advising them to cease using the affected 785 vehicles until further notice and have them picked up by a Porsche Centre. Now, engines with optimised screw fittings will be used in all Porsche 911 GT3 vehicles of model year 2014 – including in those that have not been delivered yet. The relevant Porsche Centres are in direct communication with customers worldwide to discuss the further course of action.
Porsche points out that no other 911 models or other model series are affected by this action.
*Porsche model series 911 GT3: Fuel consumption combined 12,4 l/100 km; CO2-emission 289 g/km; efficiency class: G