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06-07-2011
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#1 |
 Join Date: May 2011
Location: Sydney, Australia
Posts: 2,479
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Throw out bearing noise.
Seeing as most of you are experts. Is is normal for the ZF6 throwout bearing to be noisy when the clutch is disengaged and you are not in any gear?
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06-07-2011
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#2 |
 Join Date: Feb 2011
Location: San Marcos CA
Posts: 1,802
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Re: Throw out bearing noise.
My blue label ZF6 did this loudly in my 95 LT1 car, but my current 91 LT5 car is pretty quiet and maybe more so since the Bill Budreau got his mitts on it. Seems to me that the t/o bearing isn't loaded with the clutch pedal out as most cars I had would make noise when you depressed the clutch.
Then again it's a pull type pressure plate deal. It is also possibly normal gear whine from the trans which is completely harmless if the lube oil in it is full. |
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06-07-2011
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#3 |
Join Date: Oct 2004
Location: Folsom CA
Posts: 1,655
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Re: Throw out bearing noise.
Yup.
Mostly it's from the ZF6 tho and not the throwout bearing. Even with the DM flywheel it's noticeable. Put in a single mass aluminum flywheel on a stock transmission and you will hear something described often as "A Box Of Rocks Tumbling Around". Bill Budreau, the ZF Doc has a cure, but it involves rebuilding the ZF6. TomC 'Crabs
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TomC '90ZR1 #792 Honorary Pirate [B]If it ain't FUN, you're doing something terribly WRONG. [/B] |
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06-08-2011
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#4 | |
  
Join Date: Jun 2005
Location: pittsburgh
Posts: 4,632
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Re: Throw out bearing noise.
Quote:
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It's not the car, it's the people - Doug Johnson 90 r/r "KEYS ON" nick named "T.L.B" |
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06-07-2011
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#5 | |
Join Date: Apr 2006
Location: Ideho
Posts: 2,653
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Re: Throw out bearing noise.
Quote:
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[I][FONT=Comic Sans MS]John Boyd[/FONT][/I] [I][FONT=Comic Sans MS][SIZE=1]Ideho[/SIZE][/FONT][/I] [FONT=Comic Sans MS][SIZE=1][I]2015 ZL1 [/I][I]Camaro #1121 BLACK/BLACK 6 SPD (540 RWHP)[/I][/SIZE][/FONT] [I][FONT=Comic Sans MS][SIZE=1]1991 ZR-1 #458 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK 72[/COLOR]k miles ([B][COLOR=red]SOLD[/COLOR][/B]) 1991 ZR-1 #473 [COLOR=red]RED/[/COLOR][COLOR=black]BLACK [/COLOR]37k miles ([B][COLOR=red]SOLD[/COLOR][/B])[/SIZE][/FONT][/I] |
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06-07-2011
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#6 |
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Join Date: May 2011
Location: Sydney, Australia
Posts: 2,479
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Re: Throw out bearing noise.
I got an extra in Chicago out of a totaled LT-1 maybe I will just send that to Bill to rebuild.
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06-08-2011
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#7 | |
 
Join Date: Nov 2007
Location: Squires (near Ava MO in the Mark Twain N'tl Forest) - Missouri
Posts: 6,493
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Re: Throw out bearing noise.
Quote:
 I'm just sayin... P.
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Good carz, good food, good friendz = the best of timez! 90 #1202 "FBI" top end ported & relieved Cam timing by "Pete the Greek" Sans secondaries Chip & dyno tuning by Haibeck Automotive SW headers, X-pipe, MF muffs Former Secretary, ZR-1 Net Registry |
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06-07-2011
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#8 |
Join Date: Aug 2008
Location: Houston 90 Red ZR-1
Posts: 2,320
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Re: Throw out bearing noise.
NEW GUY!
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06-08-2011
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#9 |
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Join Date: Jan 2010
Location: sotogrande spain
Posts: 38
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Re: Throw out bearing noise.
In my humble experience, the throw out bearing noise only occurs if the bearing itself starts revolving in its housing. The noise makes you think a tomcat has got in there, and has got it's chebs caught in the crankshaft. Any other transmission noise heard when the clutch is depressed will probably be just a bit of general wear and tear. Maybe bleeding the clutch might quieten things down?
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1990 ZR-1 #231 torch red/black |
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