996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

LWFW query

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Old 02-25-2013, 05:24 PM
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LWFW query

Hi all,

I recently replaced the clutch and dual mass flywheel with a Sachs 890nm clutch and Sebro LWFW.


I have done a considerable amount of research on the LWFW and noises associated with it. So I was expecting the noisy chatter at idle while car is in neutral.


However I get a very noticeable rattle from around 2k-3k revs, this is extremely noisy in high gears, so if I'm in 4th at 2k revs and put full throttle on the noise is very noticeable, it's sounds similar to a loose heat shield type rattle. Is this normal?? If somebody who wasn't familiar was in the passenger seat they would think the engine is about to say goodnight........... Normal or not normal??


Thanks
 
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Old 02-25-2013, 07:26 PM
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you are lugging the motor. that is a vibration that was soaked up by the dual mass fw. Stop lugging the engine.
 
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Old 02-25-2013, 08:09 PM
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wot in 4th at 2k +1 on don't lug it
 
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Old 02-25-2013, 10:32 PM
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Yup sounds like a heat shield vibrating... Nothing harmful with the rattle but lugging these motors is not a great practise unless it is 1st or second gear slow driving.

Any other gears and you really should consider 2500 + to be the good working accelerating start number.
 
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Old 02-25-2013, 11:13 PM
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+3 (or whatever # we're on). Totally normal sound. It's annoying, but you'll just change how you drive.
 
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Old 02-26-2013, 03:46 AM
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Ok thanks guys,

I don't drive that way but it's the only way I could describe when it happens. Mind is at rest ; ) cheers
 
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Old 02-26-2013, 08:24 AM
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Do not fear the revs. I would suggest redline in fourth gear daily (depending on where you live. For me that was easy to do and usually well into 5th)

Enjoy
 
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Old 02-26-2013, 11:20 PM
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Originally Posted by Remote
Ok thanks guys,

I don't drive that way but it's the only way I could describe when it happens. Mind is at rest ; ) cheers
I will say. The rattle is not bad but lugging these motors in higher gears can cause costly failures.
 
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