Trivia question here and I'm sure it's been covered before but I can not find it......so, back in 2002, motors had terminology applied to them and I'm trying to remember the differences.
The X50, I believe, had the K24s (VGT's) as well as better intercoolers, exhaust, and possibly the 2 oil pumps. Am I right on this or, was there anything more....and....is this the same motor that was alos used in the GT2?
Thanks in advance.

 

the VTG's were not made available until they were standard on the 997tt's. I don't recall my x50 car having anything other than the stock oem exhaust and I don't think it was "improved" for the gt2 but perhaps it was(?). the oem exhaust utilized 600 cell cats so fairly "restrictive" and probably why an after market 200 cell ( or less ) so improved performance.

the I/c's on the x50 and gt2 were the same and double as "cheese graters". they are generally considered an "upgrade" of dubious value as compared to gt2rs I/c's or other aftermarket I/c that further reduce heat soak. which are an issue for the x50/gt2 stockers.

yes, the M96 mezger motor is exactly the same motor in all three 996 iterations of the turbo cars ( 996t/x50/gt2 ) until 2005 when the VTG tech was employed on all 997tt iterations. but the 997.1 tt was the "last of" the immortal "mezger" engine ( IIRC? )

 

Very helpfull....thanks so much!
The cat info is interesting....I'd forgotten.
Cut to the chase, and the reason for my ramblings, I have a crate X50 from Germany that we will be putting in the car this week.
It has new, stock I assume, exhaust.
My old motor, that we just dropped last week had 100 cell Roock exhaust and a few years back the internals failed so we just cored out the cats and programmed the COBB to accommodate.
Sounds like maybe....maybe, I should save, transfer, over my old exhaust to the new motor?

I do have new Markski coolers, so that's covered.
Thanks again.

 

you're welcome. congrats on the new crated motor. curious what you did ( or didn't? do ) to cause your blown motor. I'm at 182 k miles and the car ( my 2nd 996 tt ) still feels indestructible to me. esp with my new 098/764 sachs clutch installed just last week.

and yeah if you have a good 100 cell exhaust you can swap - I would. nothing special at all about the x50 stock exhaust. it's the "same" as the std 996 turbo and again. restrictive!

good luck with the new motor.

 

Congrats on the 182K....incredible. I have 135 on the 997.2 Cab C4S but last yr replaced the motor.

So....it begged the question and I'm not surprised you asked.
I continue to deny, to myself, that I over-rev'd between 4 & 5 at Rd America.
My home track and though I'm too old to Club Race now I still enjoy any chance to be out there.
It was a bad day overall and in a few seconds I blew out both intercoolers and probably threw a rod.
I was due.
In 75K I'd only dropped the motor once (since 2000), and I do 5-7 track events a yr.
We decided not to rebuild....and, I decided on keeping this car, so we moved forward.
I already had K24s and a lot of other tweaks......but looking forward to a fresh X50.
Great motor, as far as I'm concerned....and almost bullet proof, as we both know......unless you do something pretty stupid. ......which I still deny.
Thanks.

 

^ so much for the rev limiter, eh? been awhile since I've bounced off of mine. good luck with the upgrades.

 

I think the X50 has a GT3 oil pump which features an extra pickup point towards the front.