Jump to content

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Underside pic of 996


Recommended Posts

Had a look under the car today while changing the rear brake pads. There is a dry oil stain just where the undercovers start (going forward from the engine there is a long chunky tubular section, which I presume is the gearbox, it's about halfway along this section). What is this likely to be and does anyone have a pic of the underside of the car so I can identify salient features (like RMS etc.)? Thanks.

Link to comment
Share on other sites

  • Admin
 

Where's the RMS, please? 

 

The Rear Main Seal (RMS) is the seal on the flywheel side of the crankshaft. So, any leaks will appear at the joint where the transmission and engine meet. In a Carrera that would be just about even with the rear wheels and dead center in the middle.
Link to comment
Share on other sites

  • Moderators

Here is a picture of an Rear Main Seal. You are looking at the front of the engine where it is bolted to the transmission. The RMS is the red circle around the crankshaft. The flywheel is bolted to the crankshaft and the pressure plate it bolted to the flywheel, with the clutch plate in-between the 2 parts. The other seal than can leak is below it and is called the intermediate shaft seal. It is behind the cover with the 3 bolts. If either of these leak oil will dribble down the front of the engine and out the drain notch between the transmission and the engine.

rms.jpg

Here is a shot of the back side of the transmission bell housing, showing the transmission main shaft that goes into the clutch plate, and the throwout bearing. Notice the crumbs on the bottom of the bellhousing. This is salt corrosion from water that has gotten into the crevices around the outside of the transmission case. Also notice the oil on the bottom of the case from the leaking IMS/RMS. All of this cleans up very nicely when disassembled.

trans.jpg

Link to comment
Share on other sites

Here is a picture of an Rear Main Seal.  You are looking at the front of the engine where it is bolted to the transmission. 

...

Nice pics. Just to avoid possible confusion: Technically speaking, you are looking at the rear of the engine, that's why it's called the RMS "Rear Main Seal". ;)

The clutch-side of an engine is always called the rear, it's just that in a 996 it's mounted the wrong way round.

Cheers,

Uwe

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.