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Clutch Cover Balancing
#511623 Sun Mar 01 2009 12:30 AM
Joined: Jan 2004
Posts: 222
Shop Shark
On my 50 261 4sp, I heard the ratta tat tat of something being thrown around in my bell housing. Took the lower cover off and a chewed up 1" long, 1/4 in diameter hunk of metal rod fell out. I believe that this was a weight tack welded to the clutch cover/pressure plate and assume it was for balancing such. Can I run without this? Or should I bite the bullet and take out my fairly new clutch assembly and either have it balanced or replace it? Thanks in advance,

1950 Chevy 3100
261, 4 speed
Purchased 1977

1964 Pontiac Lemans Convert
Re: Clutch Cover Balancing
Nifty 50 #511645 Sun Mar 01 2009 02:11 AM
Joined: Nov 2005
Posts: 5,687
3B Offline
Master Gabster
Hy Nifty 50, as a famous GM engineer once said, " Parts left out cost nothing, and cause no service problems", so if they bothered to put that piece of metal on/in there it is there for a reason, so omit it at your peril.

Re: Clutch Cover Balancing
Nifty 50 #511674 Sun Mar 01 2009 02:57 AM
Joined: Jun 2005
Posts: 146
Wrench Fetcher
IMHO, if a piece that large came off, for sure there would be vibration. Do you have new vibrations?


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Re: Clutch Cover Balancing
3B #511676 Sun Mar 01 2009 03:02 AM
Joined: Jul 2004
Posts: 5,697
Master Gabster

Is there some reason you couldn't weight the piece that fell off and tack a new duplicate on in that same place. I would guess the old location would be marked with a couple of weld pimples.


Re: Clutch Cover Balancing
3B #511678 Sun Mar 01 2009 03:05 AM
Joined: Feb 2004
Posts: 20,618
I've watched the rebuilding process on several clutches, and the balancing procedure is the last thing that gets done after all the reconditioning and assembly is accomplished. At worst, the loss of that balance weight might create an annoying harmonic at a certain RPM, but it won't keep the clutch from functioning. Run it awhile, and see if it shakes too much to suit you. An inline six is naturally balanced, because of the even spacing between power strokes and the design of the crankshaft. It would take a pretty good bit of imbalance on the pressure plate to make things shake very much.

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Re: Clutch Cover Balancing
Hotrod Lincoln #511953 Sun Mar 01 2009 10:38 PM
Joined: Jan 2004
Posts: 222
Shop Shark
Thanks for all your input. I have run it and I do not feel much if any vibrations. I will see how it goes for a while.

Last edited by Nifty 50; Sun Mar 01 2009 10:38 PM. Reason: typo

Moderated by  Woogeroo 

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