997 Turbo / GT2 2006–2012 Turbo discussion on the 997 model Porsche 911 Twin Turbo.
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997.1 turbo Rattling sound at rear

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Old Apr 26, 2014 | 06:10 PM
  #46  
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Also, I'm considering just ordering a set of RSS engine mounts. That's kind of a band aid, but I doubt the motor will torque over nearly as much.
 
Old Apr 26, 2014 | 08:47 PM
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Agua pump, my guess.
 
Old Apr 26, 2014 | 08:54 PM
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Originally Posted by Al Nunez
Agua pump, my guess.
That would be RPM related, but it's not. It is load dependent, only happens when the car is making near peak torque and the engine moves around in the mount.
 
Old Apr 26, 2014 | 09:04 PM
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Clutch sbagliato
 

Last edited by Al Nunez; Apr 26, 2014 at 09:06 PM.
Old Apr 30, 2014 | 05:05 PM
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Would anyone close to Oakland, CA let me hear the rattle which is normal? My 997.1TT sounds as bad as my Ducati and I'm not sure if that is normal.
 
Old May 1, 2014 | 12:35 AM
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Just went back to stock exhaust w heat shields from my Kline.

Rattle and Noise is back, I am sure it's the heat shields of the oem system.

As soon as car had some warranty work I will replace oem rattle with Kline singing
 
Old May 1, 2014 | 08:13 AM
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I believe it is a exhaust or shield problem because I am running straight pipes now and the rattling is gone....
 
Old May 10, 2014 | 02:18 PM
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Well, we're talking about three different things in one thread, but I just put RSS engine mounts on my car this afternoon and it did NOT solve the problem. If anything it is louder now. Not sure where to go from here.
 
Old May 10, 2014 | 06:36 PM
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Real sorry to hear that Rix. A really big bummer man. I wish we could get this figured out.
 
Old May 10, 2014 | 08:25 PM
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Could be an exhaust hanger too
 
Old May 11, 2014 | 12:35 AM
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Try to remove heat shields on exhaust?
 
Old May 11, 2014 | 06:27 AM
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Originally Posted by Squat
Could be an exhaust hanger too
Yes, check the two straps, common.
 
Old May 13, 2014 | 10:45 AM
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You don't need the heat shields with the Kline exhaust?

Admittedly I have not looked at the stock exhaust, hence the question. Are the shields part of the OEM exhaust or are they a separate piece?

Are the shields needed for aftermarket exhausts?

I too, have the rattle at under 2k rpm. It is annoying and a bit embarrassing to say the least.

-Jose

Originally Posted by xbox_fan
Just went back to stock exhaust w heat shields from my Kline.

Rattle and Noise is back, I am sure it's the heat shields of the oem system.

As soon as car had some warranty work I will replace oem rattle with Kline singing
 
Old May 13, 2014 | 11:20 AM
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Originally Posted by jjurroz
You don't need the heat shields with the Kline exhaust?

Admittedly I have not looked at the stock exhaust, hence the question. Are the shields part of the OEM exhaust or are they a separate piece?

Are the shields needed for aftermarket exhausts?

I too, have the rattle at under 2k rpm. It is annoying and a bit embarrassing to say the least.

-Jose
The oem has shields (4) aftermarket ones dont have them. I put my stock exhaust back for service and the rattle is back...
 
Old May 14, 2014 | 09:30 AM
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Originally Posted by A418t81
This thread is a bit confusing for people who aren't sure of what all we are talking about. There's the normal, rattle that happens at low throttle and low load. Not a big deal.

What Rix and I are talking about now is something that is clearly not normal. Thanks for stating the obvious, lol. If you think it is bad in the video, you ought to hear it in person. It is not picked up by the microphone nearly as well as in person. It is a very alarming banging/popping sound that appears to happen to people who are making LOTS of torque (which is why I think the motor or drivetrain is torquing over and rubbing against something on the chassis). Rix is making near 700 wtq on the stock turbos as is my buddy with the 63.5 VTQ upgrade.
I think I've heard the same sound on my car before and asked this question on the forum, your friend easy2speed PM'ed me about it also. Mine was mainly 2 or 3 loud pops, not as much as the video Rix posted. But it was loud and metallic, at first I thought it was backfire but durametric logs were fine.

I think you guys are on the right track on it only happening to cars with high torque numbers. I have the APR tune which has one of the higher torque numbers compared to other tunes, and this only happened when I was running 100 octane map. Never did it on the 93 map. And it always made the sound when the car was in a heavy squat from the boost hit. Hope someone can figure out where the noise is coming from.
 


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