If you intend to do the full X51 modification, you also need to get the new cylinder heads, exhaust manifolds, ECU programming and the center mount radiator. The engine needs to come out for the full install and I believe also if you just want the intake manifold and nothing else.

I hope this helps.

 

I have seen pictures of someone installing the X-51 Intake manifolds w/o dropping the engine.

 

Someone told me that the 997 engine can be lowered about 6 inches without actually having to drop the engine. They took out a few bolts and the engine lowered a bit giving it more room to work with. would this not be a sufficient amount of room to install the intake manifolds?

 

Is this thread viable? 2009 models have a completely different motor. X-51 is for the 2005 to 2008 engine.

 

dndodd is correct, you don't have to drop the motor to install the intake manifold. You do have to drop the motor from what I am told to R&R the heads.

I don't think the heads are worth that much in the scheme of things. From my understanding it's just a port clean up and an install of stiffer exhaust valve springs with a good valve job.

Dave

 

You are correct! The OP is asking about ORDERING a car with X51 and everyone goes on and on about a retro fit of the old car. HUH!

To the ORIGINAL POSTER...there is NO X51 option with the 2009 Carrera S. Your dealer should educate you about all the options when selling you the car. anyway, when you get it please post some pictures.

Mike

 

LOL, you get caught up reading the other threads other than the OP thread. Missed that...no X51 yet on 997.2S.

 

You mean for the 2006 to 2008 motor as the X51 cannot be fitted to the 2005 cars, as far as I know.

 

Original post is from 2007

 

re-read Micheal L's post. YES the X51 can retro fit into a 2005-2008. Make sure you get a real X5 engine though because there are lots of internal parts that are different and the heads are ported to flow more cfm. Just throwing on the X51 intake manifold, air box, headers and ecu tune is not a true x51 engine.

Hope this helps!

 

My car is a true X51 as it has everything in it. I mean, it has the carbon fiber airbox, the bigger throttle body, the aluminum intake manifold, the optimised gas flowed cylinder heads, exhaust manifolds, PSE, third center radiator and ECU remap for the X51 as done by my local dealer and stamped on the software updates section of my maintenance book, ordered from the Tequipment catalog. My car HAS the Powerkit in it completely.

Now, again, I think there are some differences between the 2005 engines and the 2006 onwards because, if I remember well, the Tequipment catalog stated the Powerkit was for 2006 and up explicitly. This part about the 2005 engine not being able to get the Powerkit comes from what I vaguely remember, which can be blurred by the 2 years that have passed since I got the kit, so anyone interested better check for him/herself.

 

I am looking at the TSB for the Powerkit and all it says it is for the 997 with M97/01 equipped car (3.8L S motor). No where does it say it is only for 06-08 997S's. The original Tequipment catalog also said the X51 kit had different cams when the X51 package does not include different cams. So I do think the catalog may have been in error.

Dave

 

The excerpt below comes from Porsche's own website:

• Powerkit

The 911 Carrera S, 911 Carrera 4S and 911 Targa 4S models offer total power output of 261 kW (355 bhp) as standard. From the moment the key is turned, the flat-six engine will set your heartbeat racing. You can also raise the pulse-rate higher with this exclusive engine conversion. Offering a maximum output of 280 kW (381 bhp), the results are 0 to 100 km/h (62 mph) in just 4.6 seconds and 200 km/h (124 mph) in 14.9.* The key feature of the Powerkit is the optimized gas-flow characteristics on inlet and exhaust. This is achieved by means of a modified cylinderhead geometry. Other features include an aluminum intake manifold and revised exhaust manifolds with larger bores. Controlling it all is a specially uprated engine management system. The performance is matched by the sight and sound of the carbon-fiber air-filter housing.

Also included in the package is a sports exhaust system with matching sports tailpipes. All are designed for optimum throughput and therefore optimum engine performance. The exhaust system has two sound modes – normal and sport – which can be selected using a button in the ****pit.

Benefits for the driver include increased power over the entire engine speed range. The car is more responsive with a more exhilarating sound. In short: even more 911.

For vehicles from 08/2005 only. Some models may require additional components.

*Data valid for 911 Carrera S with manual gearbox.

This is not from the Tequipment catalog but from Porsche's own website. It seems it won't work on cars made prior to August, 2005. My car was ordered in November, 2005 with a delivery date of March, 2006 as a 2006 model Carrera S. While I am not an expert on applications specific to any particular model, the dealer would know once an interested party tries to place the order for the Powerkit and there is no further need to expand on this subject anymore.

 

That may be from their own website, but the TSB manual doesn't mention that at all. All it says is it must be the M97/01 Motor, I would go on what the TSB says as this is what the mechanics who upgrade these cars go on..not the Porsche website.

Dave

 

"yet"? Do you have any info on what's coming?