https://www.6speedonline.com/forums/...ml#post2800959

post number 10 re: tranny

 

Posts can claim anything but that doesn't make them accurate. Search some more, maybe check with a Porsche dealer about a replacement transmission for an X50 car... that is more accurate than what a post could claim as such posts could be made by people with inaccurate information.

 

i hear ya but check out the link u posted...they actually took the 2 trannys out and compared them...who knows i guess...

 

Let's see - the part number for the X50 transmission is 996.300.010.55 and the regular Turbo is 996.300.010.50.

Now, if they're one and the same, why have different part numbers? Maybe the alloys used in one are superior to the other even though they look the same at tear-down. Maybe it's down to the composition of some metals if everything looks the same... some hardening treatments perhaps?

I don't know the details of their differences but they do have different part numbers. There is another one with a limited slip diff with part number 996.300.020.88

 

By the way, both transmissions for the Turbo X50 and the regular Turbo are G96.50 but their part numbers are different suggesting some differences between them that could escape the naked eye. The limited slip version is a G96.88.

 

interesting comments about the trannies! I'd like to know more here as well...I've heard both camps in that thye are the same...and that there is a slight difference in the X50 tranny vs. the regular turbo tranny...

 

Turbo S, GT2, and X50 have the exact same engine. The only difference is the factory map on the turbo S which makes it produce a bit more power than the X50...that's all. So if you get the same tune as a turbo S on your stock X50 it will be as fast as a turbo S.

This is really a mute point because with any aftermarket tune any car's original factory map becomes irrelevent...

 

The Turbo S and X50 don't make the same HP. The X50 is a few less. Typical Porsche marketing, probably just a slightly different map.

But if the trannies in both of these have different model numbers, then they're different in some way. Just what exactly is that? Porsche didn't give one a different part number just because they could.

 

The X50 package is a factory only option that has to be ordered as an option on the car. "making " a standard model car an X50 is like making your WRX into a WRX "STI" it is impossible to do. Making a standard Porsche much faster is easy, go with a proven system, a well tuned system is the goal, I like RuF, works very well, and is very reliable.

 

If you flash and put exhaust on a standard 996TT it will blow X50/turbo S out of the water. And the great benefit which no one is talking about is relatively no lag = better smoother power delivery (small turbos). So, the question really is: Is 500bhp @ crank enough for you or not? My car is an X50 option flashed, with exhaust and filter (EST-530bhp @ crank). My friend has a standard car, with exactly same modifications. In the real world there is sod-all in it (30bhp) out of which, his car I feel has a better power delivery (due to no lag – it feels snappier). I actually think in a proper racing scenario on a local track or on a spirited (A) road curvy drive the standard car with above mentioned mods is a quicker and a more sure-footed proposition. Big turbos are for race tracks with long straights sections or motorway racing where it’s all about above 120mph acceleration. A month ago, I drove my friend’s 996 GT2 with 650bhp on a local track. The thing was un-drivable. I was spinning in 4th! My lap times were 5 seconds off my usual times. I believe once all the theories and big power numbers in a pub arguments have been exhausted, in the real world any power above 500bhp is all relative... If you want to be the fastest guy on the German Autobahn and pull away from everything on 2/4 wheels then the big bhp is the wholly grail. If not and the spirited fast drive through curves and attacking local tracks is your thing, big turbos and big bhp numbers only get in your way. In reality, the standard lag-free fast spinning turbo with 500bhp is all you will ever need in above mentioned scenarios. And if 650bhp car gains 30 feet on the pit straight so be it. Waiting for a plane so a bit longer post...

 

Excellent post, by somebody with experience with both K16 and K24 cars. Newbie's shopping for a TT take note!! I too was keen on an X50 when I 1st went looking, it wasn't until I had driven both cars that the reality/driveability differences dawned on me.

 

i also have some ( limited ) experience with both setups. the previous post to which you referred is right on a few counts but wrong also. he's certainly right that if your driving style is twisties and quicker power on tap then a flashed k16 is preferred. the lag is less obvious ( or virtually non existent ) than an x50. a flashed k16 car will spool a bit "faster". hybrid k16/24's are a great compromise and don't sacrifice power on the top. at least, that's my experience. as to driveability ( not sure what that means to you as the occasional "lag" on boost isn't really that big a deal ) so..reliability? no difference at all.

the "wrong" bit imho, is that a flashed k16 will "blow away" a stock x50 car. i'm not certain what qualifies as "blow away".. but i think that's hyperbole, and it just ain't so.

 

Ok, ok I was exaggerating a bit. What I meant was, that with a flash + exhaust standard turbo will be quicker than xp50/S car. Been there done that. However, with the same mods to xp50/S the reverse is true by an equal amount - back to my post. Catch 22!

 

I work at race track part time and the 2005 S turbo
Stock for stock is for sure quicker in both zero to 60 and 1/4 mile times
than an X50 car. Again these would be stock versus stock cars.

 

100%. cheers.