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I plan to replace the RMS and IMSB on my 2003, Carrera, Coupe, 3.6, Tiptronic. I have read about the MB version of the Tiptronic requiring the removal of the trans/engine together while the ZF can be removed separately. Is this true and how can I determine which one that I have? I crawled underneath and could not see an I.D. tag. So far I have found conflicting information regarding the trans. in this car.
By Schnell Gelb
Anyone else tried this?
"The GT3 Motorsport seal (not a Porsche standard part) is the same bore size as the 996/997 seal but has two protective flanges at the rear. If fitted in reverse the inner flange forces itself to flip backwards and touch the outer flange which is already forced onto the crank with a spring. This prevents any oil from possibly leaking even if the bore is out of tolerance."
My name is Andy, based in Swansea, South Wales, UK. Having just bought my first Porsche (an '02 C4S) with 70K on the clock - I have been googling my little socks off looking at all things 996! I LOVE, LOVE, LOVE this car - never owned anything that goes round corners like it... the downside is, it keeps me lying awake worrying about it - but I think that's the usual new car paranoia, which will settle down!
Having found loads and loads of excellent posts written on this forum I decided to sign up, say hi and hopefully pick a few brains!
Currently, I am making myself extremely paranoid about the whole IMS issue! The reason for this is there is a little bit of oil at the base of the engine (eg the normal IMS / RMS leaky bit - according to images on the web). The leak is VERY, VERY slow (more just damp) and is not dripping or anything (have wiped, driven and nothing much more coming back down).
The question I have is this. There seems to be some discrepancy in information regarding leaks in this area. Some people seem to be suggesting that leaks in this area are NOT related to internal (eg potentially catastrophic) IMS issues as the "problem" bearing is actually sealed inside the engine behind the outer seal and therefore leaks from the outer seal are not relevant, they are just that, leaks from the outer seal and cause no damage, just irritation - and possibly the owner paying a bit more attention to oil levels!
Others seem to suggest that vibration caused by wear to the internal bearing cause the outer seal to leak, and therefore one SHOULD be worried.
Can anyone provide any clarification on this, should I panic / stop driving / do an oil change and check for metal / jump out the window / drive it like I stole it? In short, I don't want to waste a load of money if not necessary - are there any rules of thumb?
Incidentally, I'm not worried if it's just a very slow oil-leak from a seal I can deal with that in due course!
I'm sure this topic has been gone-over ad nauseum, so apologies, but can't seem to find definitive answers! (maybe because they don't exist!)
Best regards, all - and thanks!
Hello there, my car is an early 2004 996 C4 Cab, 3.6L, 85k miles.
Good stuff on my DropBox folder: https://www.dropbox.com/sh/p62gwxshg2zath4/0wYS9yrgfv
Engine has not been started for 4 months. Actually it has been on a huge container for 2+ months and just few weeks ago I got the time to start working with my car again.
Just before taking these pictures, note that I did wash my engine and transmission while they were still connected to each other, that might explain the glossy oil spots near my IMS (or not).
Four months ago, underneath the car it looked that I get a tiny amount of oil after I drive around 500 miles, sometimes even a drop of oil to my garage floor if I drive a lot more. The drop comes right to the spot which usually indicates RMS/IMS leak. Then again, my AOS has been spitting lots of oil out from the connectors and the drop might originate from there too, impossible to say as front left side of the engine near AOS was so full of oil and gunk.
I've changed my oil now twice, both the oil and filter ripped open has looked really really clean but this is based solely on human eye :-)
I'd like to get a few second opinions to my questions, hopefully this thread is usefull to others too.
1) How does my RMS / IMS look in general?
I'd say the leak is reasonably small, most gunk originates from clutch, would you feel the same?
2) Would you change my RMS or just leave it be?
It has already been changed once at some point.
3) What exactly seems to be leaking here?
To me it seems to be the IMS, but strangely enough the bottom part right below the IMS cover was completely clean (just zoom the images and remember that I washed my tranny and engine just before separating them).
4) Which bolts would you change while doing the IMS?
Looking at the pictures, many change bolt numbers 4, 5, 6 and 7, how about you?
5) Curiosity question, what parts are not original?
My RMS must be new as the part number is 997.101.212.00. IMS looks old, part number K.99602401 (?). Also would you also feel that many of these bolts have been changed as they look past year 2004 bolts, right?
PS. I have a new RMS, LN bearing + tools waiting for the installation..
Big Kudos to everyone who got this far, hope you'll inspect my DropBox picture folder too!
I did end up with a decent size oil leak, this morning.
At the shop, when inspected underneath, it does seem to come from near where the transmission connects the motor.
Per my mechanic, there were no metal pieces in the filter when the oil was changed at 130K miles - and it may be unlikely that the IMS may be going bad by the current mileage of 134.5K.
While I don't experience slippage when shifting, does it make sense to bite the bullet and get the clutch, upgraded IMS, RMS and all of the required components replaced at this point.
My mechanic recommended that I drive it for another 3k miles and see how the oil spill continues before scheduling for the replacements along with the oil change. Would I be risking the motor in any way by doing so?
Also how much should the total cost come to, if done at an Indy shop?
Thanks for your thoughts,