996 GT3 RMS

[davejones]

Apologies if this has been covered before but my search didn't reveal much.
Anyhow, I have a 2005 996 GT3 with 10k on the clock that I've had from new and I have just had to have the fourth new rear main oil seal fitted. This latest one has had to be fitted only 155 miles since the previous one. Admittedly the car does not get used very regularly and whether this is the cause or not,I just don't know - however I'd like to know if anyone else has similar problems?
The car is still under the extended warranty and therefore to date I have not had to pay the costs but I'm concerned that the trend will continue when it goes out of warranty.
The second time we had the problem the dealer stripped the entire engine and fitted a new set of crankcase seals, but since it's just been the rear seal.
Any help/comments appreciated?
Thanks
Dave

[carcrazypop]

Have a word with Mike at Sports & Classic in Knutsford, he's the man for all things 996GT3 & is a regular on here. http://www.sportsandclassic.com/index.php
Good Luck.

Edited by carcrazypop on Tuesday 26th June 08:40

[cd1957]

Hi there is leak test procedure on the GT3,just in case its a porus crankcase,they have even replaced engines because of the issue,but some of those leak.
Can u make sure that the sports exhaust vacuum pipe has not been disconnected.

Chris

[davejones]

Thanks will follow up with Mike - Every time the car has been at the dealer for this they say that before Porsche technical will approve the work they have to apply some kind of "leak test" coating and leave it overnight, I wonder if this is the same thing that you mention or some other treatment.
As an aside, to add insult to injury this last time it needed attention, the dealer asked me to "pre-approve" the labour costs of removing the gearbox just in case the leak was not going to be covered by the warranty this time!!!

[sportsandclassic]

Hi,

Thought I would just add something to this thread.

First of all to do these leak tests (Dye-Pen) is a fairly simple process, but assesing the results is the hardest part and you can get qualified and certified in just this process alone.

The approach I would take would be:

• Remove transmission, cluch and flywheel.
• Inspect area and visually trace the leak if possible.
• Try a water soluable dye pen test. (If no conclusive result then go to next step)
• Fit flywheel, clutch and a dummy bell housing. Start engine and run up to temperature for around 1/2- 1 hour.
• Remove bell housing, clutch and flywheel. Check the area again.

Just on a side note I have had oil run out of the end of a GT2 crankshaft before! Needed a crankshaft.

4 RMS on a GT3/GT2 engine is unheard of unless there is a problem with another area in my view.

Got any pictures of the seal/area ?

Shame its under warranty as I would get to the bottom of it no matter what was needed.

Mike

[davejones]

Mike, Thanks for your reply and advice - sadly I have no pictures as all I've ever seen has been the drips of oil on the "bracket" under the gearbox when I've had it up on the lift. The OPC have been very cautious and like you say, I've not heard of any other GT3's having this problem. I spoke to some guys from a Cup team who said they have often see misting around the rear but not actual droplets of oil.
I'll contact the dealer and see if I can pursue it further.