RMS on 2010 GT3
02-17-2009, 04:03 PM
#16
Rennlist Member
I call it bullcrap.
The little drips they are talking about I do have also and I do drive it very day.
What about the big leakes as in 10" puddles after each run and a completely in oil covered rear end? Is that seepage?? Did not happen to mine, but I have seen it twice on an regularly driven GT3..
The little drips they are talking about I do have also and I do drive it very day.
What about the big leakes as in 10" puddles after each run and a completely in oil covered rear end? Is that seepage?? Did not happen to mine, but I have seen it twice on an regularly driven GT3..
02-17-2009, 04:56 PM
#17
Technical Guru
Rennlist Member
Rennlist Member
Or they removed the one-way check valve on the top of the motor that enables the near-vacuum? If you take a 964/993 engine put a one-way check valve on the crankcase ventilator and use the same type of seal (that supports a vacuum) the RMS will leak after sitting for a while. BTDT -- and was warned it would happen before I tried, by shops that had raced 993 engines with the same type of seal purchased from PMNA in the late nineties...
02-17-2009, 05:24 PM
#18
Rennlist Member
02-21-2009, 02:53 PM
#20
Hello all - I sent a note to Porsche asking whether they had done anything to try to rectify the numerous complaints regarding the RMS on the GT3. Their answer is below. My experience with 3 911s (6GT3, 6C2, 7C2S) supports their statement regarding driving daily. My 6GT3 and 6C2 were not DD and both had RMS leaks. My 7C2S is a DD and has never had a problem. All were also track cars.
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Please be advised that GT3 engines have a design which is unique from other 911’s because of it’s exposure to very high RPM’s. The rear main seal of these engines is held tight by a vacuum created inside the engine block. If the vehicle is not used for prolonged periods of time this vacuum pressure may decrease allowing a small amount of oil to seep past the seal. Due to this special design, oil seepage can occur in GT3 vehicles that are not driven on a regular basis.
Your warranty manual indicates that your a customer's responsibility for normal vehicle use is for the vehicle to be driven daily over a distance of several miles. Your vehicle was designed with the assumption that it would be used within these guidelines. If it is not, you may experience some oil seepage; however, this is not a defect in the vehicle but simply a result of lack of use."
To answer your question directly - ("On Rennlist there are an incredible amount of complaints about RMS leaks on the 997 GT3. What has Porsche done to rectify this situation on the 2010 GT3?" )
Oil seepage is considered normal, as outlined above, and is not a defect. However, the 2010 model year GT3 has a different engine configuration and design than prior model year GT3's, which will further minimize and may completely eliminate seepage that results from lack of use. This is a matter of making design changes and updates, not manufacturing defect corrections.
==============
Please be advised that GT3 engines have a design which is unique from other 911’s because of it’s exposure to very high RPM’s. The rear main seal of these engines is held tight by a vacuum created inside the engine block. If the vehicle is not used for prolonged periods of time this vacuum pressure may decrease allowing a small amount of oil to seep past the seal. Due to this special design, oil seepage can occur in GT3 vehicles that are not driven on a regular basis.
Your warranty manual indicates that your a customer's responsibility for normal vehicle use is for the vehicle to be driven daily over a distance of several miles. Your vehicle was designed with the assumption that it would be used within these guidelines. If it is not, you may experience some oil seepage; however, this is not a defect in the vehicle but simply a result of lack of use."
To answer your question directly - ("On Rennlist there are an incredible amount of complaints about RMS leaks on the 997 GT3. What has Porsche done to rectify this situation on the 2010 GT3?" )
Oil seepage is considered normal, as outlined above, and is not a defect. However, the 2010 model year GT3 has a different engine configuration and design than prior model year GT3's, which will further minimize and may completely eliminate seepage that results from lack of use. This is a matter of making design changes and updates, not manufacturing defect corrections.
I'm still astonished that Porsche can deliver an 8400 rpm, 415hp normally aspirated engine with a warranty -- this is the stuff of hand-built race engines usually handed over with an assurance of specific power developed, but no assurances of longevity (which would be measured in hours of operation, not miles and years in all conditions with any old fuel thrown in the tank.)
FWIW, I've had two 997 GT3's. Both low milers which stood in the garage for months at a time between track days and rarely working as a daily driver. No leaks. One of them had a squeaky clutch pedal. Both arrived with woeful alignment. The second one had a squeaky front strut. And one day the radio stayed stuck on a single setting. Just pulled the fuse and it reset itself. No other troubles.
I hope they do something to damp the vibrations that reach the rearview mirror -- it's hard to see the police cruisers trying to sneak up and pace me.
02-21-2009, 06:21 PM
#22
Platinum Dealership
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my RS never leaks, despite being thrashed heartily and put away for a few weeks at a time while I travel. my cobalt 997 never did either and now the new owner lets it sit for really long periods of time. it could possibly be because the way I broke them in- ran them fairly hard throught the rpms and gears in the first few days- parked them outside in the cold overnight so everything could expand and contract. both saw over 2k miles in less than 14 days of ownership...
02-22-2009, 10:56 PM
#23
Burning Brakes
my RS never leaks, despite being thrashed heartily and put away for a few weeks at a time while I travel. my cobalt 997 never did either and now the new owner lets it sit for really long periods of time. it could possibly be because the way I broke them in- ran them fairly hard throught the rpms and gears in the first few days- parked them outside in the cold overnight so everything could expand and contract. both saw over 2k miles in less than 14 days of ownership...
02-23-2009, 01:28 AM
#24
Rennlist Member
my RS never leaks, despite being thrashed heartily and put away for a few weeks at a time while I travel. my cobalt 997 never did either and now the new owner lets it sit for really long periods of time. it could possibly be because the way I broke them in- ran them fairly hard throught the rpms and gears in the first few days- parked them outside in the cold overnight so everything could expand and contract. both saw over 2k miles in less than 14 days of ownership...
Is this break in procedure in line with what porsche recommend? Having never owned, I'm not aware of the break in procedure.
Last edited by 911rox; 02-23-2009 at 02:30 AM.
02-23-2009, 12:02 PM
#25
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I drive my car daily, and track it 1-2 times per month. I had a front main seal leak, not the rear one.. Still a leak from the same type of area in my book
I believe we have covered RMS enough in the past that nobody here believes it is purely from a lack of use.
I believe we have covered RMS enough in the past that nobody here believes it is purely from a lack of use.
