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02-10-2009, 01:50 PM
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#1 |
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Registered User
Join Date: Jan 2009
Location: Binghamton, N.Y.
Posts: 116
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4 Speed Clunking
I replaced my clutch over the weekend and have spent the last two days putting some miles on it breaking it in and seeing how things go.
Only thing I've noticed so far is at low speeds while I'm not pressing the gas, shifting into 2nd and 3rd I get 4 or 5 quick clunks coming from in or around the transmission. I have no clue what it might be, and I'm hoping nothing is coming loose. But I've put the pedal down a few times so far and everything seems tight. Downshifts are solid and product no noise. Any ideas? |
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12-30-2009, 06:15 AM
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#2 |
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Registered User
Join Date: Oct 2008
Location: Winchester MA
Posts: 21
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Re: 4 Speed Clunking
Hey, did you end up figuring out what the problem was, I actually have the exact same problem
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12-30-2009, 08:13 AM
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#3 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,851
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Re: 4 Speed Clunking
I`m going to guess it`s end play getting sloppy.
__________________
"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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12-30-2009, 11:40 AM
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#4 | |
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Kid's Mechanic
Join Date: Nov 2006
Location: Kansas City
Posts: 8,241
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Re: 4 Speed Clunking
Quote:
Last edited by powerdriver 1958; 12-30-2009 at 11:43 AM. |
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12-30-2009, 12:24 PM
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#5 |
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What?
Join Date: Jun 2007
Location: Southern California
Posts: 7,617
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Re: 4 Speed Clunking
No mention of the pilot bearing being checked and replaced either.
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Chris 1968 K20 Suburban 1972 K10 LWB PU |
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12-30-2009, 01:18 PM
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#6 |
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Registered User
Join Date: Nov 2000
Location: Carver County, Minnesota, USA
Posts: 626
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Re: 4 Speed Clunking
I dunno about this one but could it be that since the flywheel was re-ground (you did do that right?) and you have a new clutch plate, until it's all broken in could it be extra grabby as it is clutched in and out causing the transmission to clunk a few times? Do you have the clutch adjusted correctly since it's a new clutch plate?
__________________
72 Chev C-10 90% restored (former AZ truck) ... 71 Chev K-20 Cheyenne my vacation crusier... 72 Chev C-10 Now retired and striped after many faithful miles... 72 GMC 1500 Retired to the junk yard after bought new in '71... |
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01-04-2010, 03:05 PM
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#7 | |
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Registered User
Join Date: Oct 2008
Location: Winchester MA
Posts: 21
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Re: 4 Speed Clunking
Quote:
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01-04-2010, 06:15 PM
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#8 |
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Registered User
Join Date: Aug 2009
Location: Alden NY
Posts: 2,705
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Re: 4 Speed Clunking
Are the rear bellhousing mounts (on the crossmember) good? Maybe they could have been broken/separated when jacking the trans? ( I am assuming you have an SM 465 that hangs off the bellhousing? Carrier bearing seated correctly in the rubber? Just acouple of shooting in the dark possibles.
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1961 C1 Corvette 1959 El Camino 350 TPI, 9" 4 w disc 69 Blazer K5 - sold July '20 2021 Durango RT 5.7 |
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01-05-2010, 12:21 AM
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#9 |
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70 Chevrolet=Obsession
Join Date: Jun 2009
Location: nice ca
Posts: 1,067
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Re: 4 Speed Clunking
I have a Muncie M20 and if I heard clunks like that I would have a heart attack. Have that looked at because it could be a big problem.
__________________
 I'm Just like my truck. Old, Ugly and Grouchy. Except my truck starts easily in the morning and doesn't smoke! IT'S NOT EASY BEING GREEN! -Kermit the frog 1970 Chevrolet C-10 Longbed Stepside : 350, Muncie M20, 3.08 GM corp. positraction Forest green exterior/light green interior(Where all my money goes) 1996 Toyota Corolla (Parts runner) |
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