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  #1 (permalink)  
Old 08-08-2007, 03:04 PM
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Can someone tell me whats the different between these 2 ?

Hi guys~
Recently I am considering swap my engine. Of course X51 which is on 997 Carrera S is the best way to go. But during my research I found 2 kind of engines. Thay both claim its X51. But obviously they are different. At least they look different. Can someone explain what are these 2 motors and whats the different?

Thanks,
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  #2 (permalink)  
Old 08-08-2007, 03:30 PM
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The one on the left is a 3.8L motor found in the 997S by default, the one on the right is a 3.8L X51 which is OPTIONAL in the 997S.
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  #3 (permalink)  
Old 08-08-2007, 03:59 PM
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Quote:
Originally Posted by K-Man S View Post
The one on the left is a 3.8L motor found in the 997S by default, the one on the right is a 3.8L X51 which is OPTIONAL in the 997S.
Thanks, but I still don't understand. Is that earlier and later difference? Do they performance the same horsepower?
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  #4 (permalink)  
Old 08-08-2007, 04:16 PM
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parapa1524 - Wow thanks for those pics! I've never seen the engine. Kinda puts things in perspective when you "see" what the heck your sitting in front of. Pretty cool..
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Old 08-08-2007, 04:28 PM
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Originally Posted by FirstCayman View Post
parapa1524 - Wow thanks for those pics! I've never seen the engine. Kinda puts things in perspective when you "see" what the heck your sitting in front of. Pretty cool..
Neither one of these pictures shows what our 2.7L or 3.4L engines look like. The first one is a 3.8L engine producing 355HP and the second one is the X51 3.8L that produces 381HP.

If you look in some of the articles that K-Man S has added to the Articles section you can see many pictures of what you're sitting in front of.
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Old 08-08-2007, 04:53 PM
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the one on the right looks just like the techart 3.8 engine

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  #7 (permalink)  
Old 08-08-2007, 05:43 PM
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Originally Posted by TX-KmanS View Post
Neither one of these pictures shows what our 2.7L or 3.4L engines look like. The first one is a 3.8L engine producing 355HP and the second one is the X51 3.8L that produces 381HP.

If you look in some of the articles that K-Man S has added to the Articles section you can see many pictures of what you're sitting in front of.



Correct me if I missunderstood. So there are 2 types of X51 3.8L engine. The engine in right picture has OEM optional power package. Am I right?
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Old 08-08-2007, 05:50 PM
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Quote:
Originally Posted by parapa1524 View Post
Correct me if I missunderstood. So there are 2 types of X51 3.8L engine. The engine in right picture has OEM optional power package. Am I right?
There are 2 types of 3.8L engines that Porsche offers in the 997S. The 3.8L that is depicted in the first picture is the standard engine that comes with the 997S. The X51 3.8L engine is part of a $16,900 option for the 997S

Here is a list of what you get with the X51 option:

Quote:
Raises power output to 381 hp. Includes modified cylinder heads, exhaust manifolds, ECU, additional radiator (only for manual transmission), carbon fiber air-cleaner housing, aluminium-intake system and sports exhaust system with pair of dual-tube tailpipes in individual design in chrome-plated stainless steel.
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  #9 (permalink)  
Old 08-08-2007, 06:10 PM
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Hey, good pic, is the blue cap on the rightside inside of the engine cover the PS cap?

Tks,
MISpuds
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  #10 (permalink)  
Old 08-08-2007, 08:20 PM
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thanks, that answeres some questions I've had forever too...
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  #11 (permalink)  
Old 08-08-2007, 09:48 PM
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Originally Posted by TX-KmanS View Post
Here is a list of what you get with the X51 option:
How much is just the aluminium-intake system?
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  #12 (permalink)  
Old 08-08-2007, 10:30 PM