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996 turbo rattle
Hi.
Just seeking some feedback on my 2001 996 turbo with 60,000 miles. The dented and leaking headers were swapped for OEM manifolds but the noise persists. It goes away as the engine warms up. https://youtube.com/shorts/_OQzzUJ9vi4?feature=share With a plastic hose it appears to be coming from the under the heat shield near the top of the hot side. Sent from my iPhone using Tapatalk
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04-20-2021, 04:23 PM
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Join Date: Jan 2008
Location: NJ
Posts: 1,186
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It could be normal Mezger engine noise. Take a trip down this rabbit hole.
https://rennlist.com/forums/996-turbo-forum/980176-mezger-engine-noise.html
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2013 991.1 Carrera S Cab 2004 996 Turbo CAB X50 sold 2003 996 cab 6 speed Sold 1972 RS 3.2 twin plug short stroke crank fire, roll bar, sold DE instructor since 1985 |
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04-23-2021, 09:16 AM
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Join Date: Aug 2010
Location: Earth.............
Posts: 2,908
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People seem to forget that the almighty Mezger engine was designed to go racing with, so no consideration was given to making it "soccer mom" quiet..............
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04-23-2021, 09:46 AM
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I have 2 996 turbos. The both turbos on the 02 are quieter and the right turbo is also quiet. Plus it gets quieter as the engine warms up. All 4 nuts connecting the muffler are tight and I’m sure I replaced the o ring gasket. The headers where badly dented and cracked. I hoped that was the source but after replacing the manifolds the noise is still there.
Oh well. Thanks to Covid and work from home I’ll have time to drop the motor for a more thorough inspection. Sent from my iPhone using Tapatalk
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04-26-2021, 01:59 PM
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Turns out the noise was from the wastegate.
The PO tightened the actuator rod too much. Thus i guess the gate couldn’t close properly. Loosened the rod a bit and all is well. Sent from my iPhone using Tapatalk
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05-23-2021, 06:05 PM
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