How many 15-16 gt3's have engine replaced?
02-25-2016, 05:43 PM
#76
Where as a spare motor is $85,117, if you have no core to turn in.
02-25-2016, 08:27 PM
#77
Rennlist Member
So you have to end up with a non catastrophic failure such that you have a usable engine. Or...
02-25-2016, 10:19 PM
#79
Three Wheelin'
02-25-2016, 11:25 PM
#80
I have an F with 7000 km and can't wait to take it out as soon as weather gets better (Canada )
02-25-2016, 11:47 PM
#81
Black gold, this might help:
That's very interesting and entirely plausible. It would be the G series engine they are referring to out of the three. It has the same oiling modifications as the RS engine I am told. However we don't know the specifics of what has been changed for certain yet.
It is correct that at this stage we are looking at E cars that have been tracked. As demonstrated here there are E engines still going strong at around 10,000 miles or more, but one assumes over time the issue will affect them all.
F engines appear more durable with no firm recorded case of the same failure yet on these boards although we do have some interesting issues with a 2-3 units but I think unrelated and due to part or assembly defects.
It's pure supposition but I suspect they upgraded the rockers/cam shafts on the F engine to be more durable and made an ECU software tweak that improved overall oil pressure. If an E engine fails and they don't want to do a replacing of the engine they might send these improved parts to be fitted.
For G they appear to have gone further with lubrication finally bringing the MA175 (GT3) and MA176 (RS) engines effectively to the same spec other than capacity, Max rpm and heavy duty crank (one assumes).
From G onwards revisions to the MA175/6 engines will be based on learnings from the Motorsport engine which is a MA17x derivative...
It is correct that at this stage we are looking at E cars that have been tracked. As demonstrated here there are E engines still going strong at around 10,000 miles or more, but one assumes over time the issue will affect them all.
F engines appear more durable with no firm recorded case of the same failure yet on these boards although we do have some interesting issues with a 2-3 units but I think unrelated and due to part or assembly defects.
It's pure supposition but I suspect they upgraded the rockers/cam shafts on the F engine to be more durable and made an ECU software tweak that improved overall oil pressure. If an E engine fails and they don't want to do a replacing of the engine they might send these improved parts to be fitted.
For G they appear to have gone further with lubrication finally bringing the MA175 (GT3) and MA176 (RS) engines effectively to the same spec other than capacity, Max rpm and heavy duty crank (one assumes).
From G onwards revisions to the MA175/6 engines will be based on learnings from the Motorsport engine which is a MA17x derivative...
The 991 GT3 series oil pumps are:
15 GT3 PN 9A1 107 051 90 listed for Model MA1.75
16 GT3 PN 9A1 107 051 93 listed for Model MA1.75
GT3 RS PN 9A1 107 051 93 listed for Model MA1.76
So it does appear the the 16 GT3 has the same oil pump as the RS. Since the 16 GT3 and the RS have the same oil filter and pump it's probably safe to say the rest of the oiling system is the same/similar. It would make sense from a manufacturing point of view.
I just got these from Porsche of the Village.
15 GT3 PN 9A1 107 051 90 listed for Model MA1.75
16 GT3 PN 9A1 107 051 93 listed for Model MA1.75
GT3 RS PN 9A1 107 051 93 listed for Model MA1.76
So it does appear the the 16 GT3 has the same oil pump as the RS. Since the 16 GT3 and the RS have the same oil filter and pump it's probably safe to say the rest of the oiling system is the same/similar. It would make sense from a manufacturing point of view.
I just got these from Porsche of the Village.
02-26-2016, 10:24 AM
#83
Rennlist Member
My misfires were not at a high RPM and verified with my data logs. I got a new coil pack installed on cylinder 6 and I picked up my car last night. I plan on driving the hell out of it now. 
02-26-2016, 05:02 PM
#84
Nordschleife Master
I agree, drive the hell out of it. You need to find out whether this engine is a candidate for complete replacement or will it last well past the warranty period.
02-26-2016, 05:32 PM
#85
Porsche and PCNA are not budging, only want to replace top end with new valves, camshafts, etc....
02-26-2016, 05:42 PM
#86
Rennlist Member
I'd make it a point to do an oil analysis at every oil change.
02-26-2016, 05:57 PM
#87
5th Gear
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So, my friend just collected his Ex F block gt3 car from OPC with a complete new engine. No instructions or documentation given. Just told it's a complete new engine and in passing mentioned that maybe a 500-1000mile run in regime could be followed.
As a reminder this is a UK F block car with registration in Nov '14. Engine went at 5.1k miles. First problem was ~4.9k miles with an engine light, when they replaced the coil packs and cleaned the carbon build up. It's done 2 moderate Days at the ring, the trip there/back and a wend hooning trip - say 2k miles in total and the rest of the miles have been regular drives. 2nd owner, first owner did 1.7k miles use and run in procedure unknown.
My friend asked them to check any recalls re the Pdk gearbox and this cars vin atm is not on the recall list.
Crossed fingers that this a newer/different engine and the problem solved.
As a reminder this is a UK F block car with registration in Nov '14. Engine went at 5.1k miles. First problem was ~4.9k miles with an engine light, when they replaced the coil packs and cleaned the carbon build up. It's done 2 moderate Days at the ring, the trip there/back and a wend hooning trip - say 2k miles in total and the rest of the miles have been regular drives. 2nd owner, first owner did 1.7k miles use and run in procedure unknown.
My friend asked them to check any recalls re the Pdk gearbox and this cars vin atm is not on the recall list.
Crossed fingers that this a newer/different engine and the problem solved.
02-26-2016, 08:23 PM
#90
Race Director
I wonder if Porsche was initially replacing complete engines because they wanted to completely tear down the old ones for analysis and to more accurately gauge the extent of any required fix. Now, they've determined that a top end rebuild is all that's required to address the issue.
Or, faced with an ever increasing number of problem engines, they're getting stingy.....