Superfans

I've been hearing a few people complaining about RMS on 997s and 996s. They all said that it won't happen on 996TT or GT2 or GT3. Is there a reson why it only happens in 997s/996s? Why can't it happen on TT, GT2 and GT3?

munro86

Apparently the engine design of the TT,GT2 and GT3 different and are somewhat less prone to leaks in this area. Also, I've heard that the 997 engine is fundamentally the same as the 996 engine-the M96 engine type I think.So the leaks have been seen in the 997 as well. However, I've also heard that a new seal fix has been just released that looks promising.

930man

had one in my 997 fixed 5000 miles ago no problems since

tocho

ditto 3k ago

dhud

The Turbo, GT-2, and the GT-3 use the the air-cooled block that Hienz Metzger designed 40 some years ago for about 150hp. This block was so over-engineered that today people like Ruf are able to get 700 reliable HP out of it! This is a quote from a friend of mine at RUF when I expressed my frustration. Unfortunately, the run of the mill block in the 996 and 997 have too much Japanese influence with present Porsche management. The theory is that the block allows to much flex in the crankshaft at the main bearing journals and this is what creates the RMS leak. The webbing in the Turbo block is so strong that this does not happen. Both my 996 C4S and my 997 S have had RMS leaks. It can be fixed, however, I am tired of the down time. I have sold the cars and I am waiting for a 997 Turbo which incidentally is reportedly still using the same block Metzger designed

brownie

My 2006 997S is at dealer right now having seal replaced 578 miles

JFScheck

So far, lucky with the Boxster, guess we will see with the 997S...

AeroSmith

Yeah, I guess I've been lucky with my 996 (14,000 miles). Hopefully that luck will continue with the 997S.

NoSubEDU

5k miles on the new 997S, no leaks yet. :crosses fingers:!!

Ronnie

3894 miles and no problems with me.

JFScheck

We have the "X51" so we won't have any problems at all. Oh, and I heard our engines are plated in gold...

I hope with that "X51" perhaps they will do something special to ensure no RMS problems?

I guess only time will tell

boolala

7 K miles and no leak.

Cupcar#12

just a point of clarification the GT-3, and turbo are not imune to the RMS issue - it is just very rare - wiether that is because of the block design (which is my opinion) or the realitively little use these cars get compaired to a mostly daily driven 996/997 population remains to be seen.
I agree with RUF but the jury is still out. It seems that other an electrical glitches the 996 and 997 engines are very reliable. They are definitly not built the way the use to be though.
The GT-3 and Turbo use a deriviative of the 964 block (in fact the first run of gt-3 blocks had 964 part number made in germany they have since been supplied from a spanish supplier.

Superfans

If the car has RMS problem, then where exactly will the engine oil be dripping from? Right underneath and in the middle of the engine (in between the exhausts) or a little bit further up in between the rear wheels? Thanks in advance.

Paul S.

Your mouth to God's ear, but I'm not betting on it--I've had 4 Porsches with the M96 engine (996/986/997 engines) and an 01 Turbo. My Boxster S had a rear main seal leak at 19,000 miles. The three others were fine but I didn't own any of those for more than two years/10,000 miles. If it leaks fix it--or buy a Turbo, GT3 or GT2