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Car Forum / Antique and Collectibles / Studebaker / October 2008Clutch headaches again...(long)
Well, my little 63 project is now almost done after sitting on the proverbial back burner for years and one horribly botched paint job that kind of put it there six years ago. The car was eventually stripped to bare metal and done right and I have been working on it in between paying jobs. AC is done save for charging, OD tranny built and installed after I yanked the engine to do a couple things. Interior done and looking good. I managed to save the original yinyl off the door panels and used plastic tub/shower board as a backing and industrial Velcro to fasten them to the doors. Tedious work but they look great. This car has twenty thousand miles on it, it had seveteen when I got it. Never would have painted it 'cept a delivery truck smushed the passenger door and the paint was dead anyway... As with any project, the "while you are at it" stuff got silly..New headliner, rubber, seatcovers, etc...etc..etc... I just got it back running and I am still having a problem that is beginning to piss me off royally...this car is an OHV six and the newly rebuilt clutch is chattering just like the old rebuild one did. That one was jsut put in before I got the car. This unit was done by one of the best clutch guys anywhere, clutches are all he does and he has been at it for thirty five years. Never had trouble with any of his stuff. I had the flywheel surfaced and he set up the whole thing up. Strange thing is that it hardly chatters at all in reverse and sometimes doesn't chatter in first. I thought perhaps the rear mounts were at fault (they look sagged and crappy), but after shoving a couple pieces of wood in there to prevent the downward movement it didn't change... I recall years ago another (64) six that gave me headaches like this but the car got totalled before I could figure it out. Anyone got any ideas before I rip the thing apart again? Studebaker George You probably don't want to hear this but... I'd pull the trans and clutch back out, install the bellhousing and make sure it's indicated in correctly. >Well, my little 63 project is now almost done after sitting on the >proverbial back burner for years and one horribly botched paint job [quoted text clipped - 25 lines] >out. Anyone got any ideas before I rip the thing apart again? >Studebaker George Lee DeLaBarre Daytona62 Yeah, I thought of that but it is the original housing and engine and the starter sounds perfect. AND, why only in forward and not reverse? Every one I've ever run across that had mis alignment had a starter that sounded like it was coming apart. Sometimes no chatter at all in forward, sometimes it raises hell. Studebaker George > Yeah, I thought of that but it is the original housing and engine and > the starter sounds perfect. AND, why only in forward and not > reverse? Every one I've ever run across that had mis alignment had a > starter that sounded like it was coming apart. Sometimes no chatter > at all in forward, sometimes it raises hell. > Studebaker George Any chance oil is getting back there? Throwout bearing coming apart and slinging grease maybe? nate  Signaturereplace "roosters" with "cox" to reply. http://members.cox.net/njnagel Everything clean as could be with new pan gasket and rear seal. Tranny just built and dry as a bone. Not a drop of oil under this car anywhere...yeah, a "leakless" Stude... I have only put about fifteen miles on it since back together but it started doing it right away. I did play with the wooden "shim" I made in between the rear mount and crossmember and that did improve it a little. New mounts are on the way but I have my doubts that will be the cure. Remember that is a real honest-to-god low mileage car. One thing I did notice was that the pedal seems a little stiff for a 6 and all the linkages are greased and in perfect shape. I'm wondering if the cover might have some sort of problem the guy missed. Studebaker George Got in the car this morning and almost no chatter at all. Maybe it was rust on the cover and/or flywheel... It sat for a while before I put the tranny together and in.... See what happens... Studebaker George George, I'm expecting to see this car at our November meeting in Hazlehurst. Stop being a wuss, and DRIVE IT! <G> If it breaks down, we've got a trailer. Matthew LOL! It still needs a bunch before it can hit the road. Still have to wire the OD and AC and do a bunch of other little things. the hood isn't on yet either and will be the LAST thing. ALSO, need to get some new letters for the trunk...can't ride around without THAT! Studebaker George > George, I'm expecting to see this car at our November meeting in > Hazlehurst. [quoted text clipped - 4 lines] > > Matthew >LOL! >It still needs a bunch before it can hit the road. Still have to wire [quoted text clipped - 11 lines] >> >> Matthew George, I'm coming late to this, as it's been a while since I logged into the NG. Can't do it from work anymore. Clutch chatter is often related to weak or broken motor mounts. When you say it happens in first, but not reverse, that's a tipoff to the fact that the problem is outside the bellhousing. After all, inside the bellhousing, nothing changes, right? The engine is turning clockwise, the clutch plate is turning clockwise, and so is the front shaft of the transmission. The difference is that the torque reaction on the power train affects the clutch linkage differently from forward to reverse. Chatter like this is an oscillation. When the clutch starts to take up, the engine torques to the right. If the motor mounts are soft, it can move enough to slack off a bit on the clutch linkage, releasing the grip, which results in the engine sagging back to the left again because the torque reaction has diminished. Needless to say, it sags right back into that partially-depressed pedal linkage with your foot on the top end of it. The clutch takes up again, and the engine torques to the right... Rinse and repeat, a dozen times per second. New engine mounts should cure it. Slack in all the clutch linkage pivot points will make matters worse, but with such a low miler, I doubt that's the root cause. Rubber motor mounts go bad from age alone. I used to drive VW Beetles, and they were notorious for a positively vicious clutch chatter that was caused by failure of the mount at the very front of the transaxle, right below the point that the shift linkage enters the case. Gord Richmond I added the mounts to a list of things that were still needed when I started this thread...the pile 'o stuff should be here next week; I was waiting until I got the "final" (at lest for now) list together to order it. Still think there was some rust on the parts from sitting as it got much better after driving it a while. BTW, I worked on VW's and MB's for a living...until I got sick of it after twenty five years... who knows how many of those mounts I replaced....and broke myself.... Most VW's didn't use a spring center disc, so they were a touch prone to chatter. They were also picky about plate balance; many times I would have to drop the engine again to reposition the plate to eliminate vibration. I have been driving the 63 'round and 'round the industrial park settling everything in and seeing what will fall off..<G> After I get the OD hooked up (kickdown switch part of the order) I will get a tag and add it to my insurance to REALLY sort it out. Studebaker George |
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