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[C1] Broken weld on ball stud

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Old Apr 26, 2023 | 06:08 PM
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Default Broken weld on ball stud

Anyone seen this before? The weld holding the frame mounted clutch ball stud broke! I pushed the clutch in and it stayed to the floor. This is a nasty spot to be welding. The car has a frame off restoration and I'd like to not have to get a welder to my shop and try and weld it while up in the air. I thought C2s had a threaded frame ball. Ideas or call the welder? I'm just north of Denver if there is a serious welder in the area. I have a Lincoln TIG welder in my shop but it's been a lot of years since I have done any welding and with one broken weld I don't trust myself. IDEAS?





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Old Apr 26, 2023 | 07:20 PM
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If the car is not NCRS , I would go with the threaded stud and call it a day.

I thought they were bolt in also, for maintenance purposes.

I looked in the 67 and another service manual - both show a bolt in with an L bracket to hold the pivot in place.

Last edited by BLUE1972; Apr 26, 2023 at 07:32 PM.
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Old Apr 26, 2023 | 10:43 PM
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Jerry, The ball stud on my 61 was severely worn/damaged from not being lubricated/ load from gorilla spring. At the time I had no access to a welder. I drilled out the old stud/ ball and installed a threaded one from another Chevy. (5/8” hole if I remember correctly) Haven’t looked back. But I do grease it regularly. Sorry I don’t remember what the threaded one was from or for.

Drive em safe
Leo
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Old Apr 27, 2023 | 07:53 AM
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regular pivot end.
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Old Apr 27, 2023 | 09:27 AM
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What is this ball from?
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Old Apr 27, 2023 | 09:37 AM
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Originally Posted by jerry gollnick
What is this ball from?

That ball matches the one for my 66 that goes on the frame mount...there's a special 'lock' that holds it in place...along with a nut..to lock it onto the mount..it does not screw into the mount..the mount pictured in post #2 is what my mount looks like also
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Old Apr 27, 2023 | 11:39 AM
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The C1 frame bracket does not have a slotted mounting hole so the lock won't work.You can see in my photo above it's just a hole. On the one you drilled out did you do anything special to insure it doesn't loosen or back out?
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Old Apr 27, 2023 | 07:40 PM
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Jerry,
On my install, a lock washer and nut. I just checked it’s a 3/4” nut so it has to be threaded for 1/2”. Probably wouldn’t hurt to use a little locktite too. Good luck!

Drive em safe
Leo
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Old Apr 27, 2023 | 09:22 PM
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Originally Posted by BLUE1972


The "lock washer" goes into the slot and holds the ball from exiting. Since you don't have the slot, the ball and nut should work.

Chicago corvette supply. All the major companies have them as should a good parts store,


regular pivot end.
B8746 63-67 BRACKET - clutch pivot frame, welds to frame 16.95 B8750 63-66 BRACKET - clutch return spring, on firewall 9.75 B8751 67 BRACKET - clutch return spring, on firewall 8.90 B8803 63-67 CLIP - clutch bell crank ball stud retainer, "C" shape 4.65 A1835 63-67 CLIP - clutch fork repair, spring type 19.50 A8702 63-67 CLIP - shifter rod retainer, "G" shape 1.65 B8723 63-65 CROSS SHAFT - clutch 327 99.25 B8724 65-66 CROSS SHAFT - clutch 1965 396 & 1966 427 93.10 B8725 66-67 CROSS SHAFT - clutch 66/67 327, 67 427 87.50 B8722 63-67 LOCK WASHER - clutch pivot stud 3.80 B8707 63-67 NUT - clutch pivot stud to frame 1.00 B8753 63-67 NUT SET - clutch pedal push rod swivel, (pr) 1.50 B8777 63-67 PLUG - clutch cross shaft grease fitting hole, red 3.75 B8731 63 PUSH ROD - clutch fork, 327 36.95 B8732 64-65 PUSH ROD - clutch fork, all 327 [ 10.75" long ] 19.85 B8734 65-67 PUSH ROD - clutch fork, 1965 396 & all 1966/7 [ 9" long ] 26.25 B1875 63-67 SEAL - clutch cross shaft, felt, (ea) 4.25 B8727 63-67 SEAT - clutch cross shaft, nylon, [2 REQUIRED] 4.85 B8744 63-67 SPACER - clutch pedal push rod 3.25 B8749 63-67 SPRING - clutch return 9.65 B8740 63 SPRING - clutch rod, anti-rattle 6.25 A1848 64-67 SPRING - clutch rod, anti-rattle, 2 required, each 4.95 B8721 63-67 STUD - clutch pivot to engine 16.55 B8720 63-67 STUD - clutch pivot to frame 10.95 B8737 63-67 SWIVEL - clutch pedal pu


The "lock washer" goes into the slot and holds the ball from exiting. Since you don't have the slot, the ball and nut should work.

Chicago corvette supply. All the major companies have them as should a good parts store,
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Old May 2, 2023 | 10:37 AM
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I ordered a ball for a 66 Corvette and it doesn't fit. 66 ball is too big. so this idea is no good. Ball must come from something else. Does anyone know what threaded ball will fit a 61 Cross shaft? OR... does anyone know of a welder who makes house calls near Denver?
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Old May 2, 2023 | 10:37 AM
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C2 ball doesn't fit C1 cross haft. Too big.
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Old May 2, 2023 | 11:13 PM
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Earlier Chevy trucks and passenger cars had different size ball / threaded studs. Esp 6 cyl vs 8 cyl.

Take the old one to a speed shop and they may match it.

Take the old one to a machine shop and have them make it. Or they can machine down the C2 one.
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Old May 3, 2023 | 12:07 AM
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You sure the cross shaft is correct for your car?
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Old May 3, 2023 | 12:37 AM
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Jerry;
I'd get the weld in stud, put car on trailer and take down to a good weld or body shop. If they can put on a hoist it will be easier. I replaced mine a few years ago and once you remove the splash shield it is fairly easy to get at from the bottom. I would recommend countersinking the hole from the outside and also beveling the outside of the stud prior to welding to make sure you get good sound weld.
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Old May 3, 2023 | 09:20 AM
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What I do (you've skipped a few steps)

1) drill or grind the peen area down, use a punch to drive shaft through the bracket.
2) chamfer the outside area of the bracket
3) center punch the outside of ball shaft (not all need this. Depends on how ball is manufactured) I do this for the next person when it needs replaced....so they know where the center of the shaft is to drill/grind.
4) clean up the inward side of the bracket so the shoulder of the shaft sits squarely against the bracket
5) push new shaft into place..hold firmly against bracket...tack weld on the outside. Of course you can also use a clamp to hold it in place.
6) check that the new shaft is sitting square and against bracket...if so weld the rest of the shaft to the bracket.
7) grind weld smooth






Last edited by Jake Morgan; May 4, 2023 at 06:38 AM.
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