I have a couple of questions regarding a viberation I am getting in my 64 roadster. It is a small block with a muncie transmission, 4:11 rear end.(recently rebuilt) I get a progressively worse viberation from about 55mph up. It seems like it occurs in 4th gear. It is present whether the clutch is engaged or coasting.
I have pulled the half shafts and checked the u-joints. I replaced one that was a little rough. I checked the wheel bearings and they rotate smoothly with no play. The tires are fairly new with less than 1000 miles on them.
I have pulled the driveshaft, and replaced both u-joints, however, the wear on the u-joints didn't appear bad enough to give me the amount of viberation I am getting. There were slight shiny areas on the cross shafts. All of the u-joints rotate freely and smoothly with no binding.
I removed the driveshaft yoke, and it has maybe an 1/8th of an inch of play. (what is acceptable?) It also has about .008 of wear. (is that acceptable?)
I do get some noise from the throwout bearing with the the car in neutral with the clutch out. Would a bad throwout bearing and/or pilot bushing cause a severe viberation?
I also get some bearing noise in third gear from the transmission. I have a ton of miles on the car, and the trans has never been rebuilt. It shifts fine with no grinding. Could there be something in the tranny that would produce this type of viberation?
Any ideas and input would be greatly appreciated!
Thanks,Paul
I have pulled the half shafts and checked the u-joints. I replaced one that was a little rough. I checked the wheel bearings and they rotate smoothly with no play. The tires are fairly new with less than 1000 miles on them.
I have pulled the driveshaft, and replaced both u-joints, however, the wear on the u-joints didn't appear bad enough to give me the amount of viberation I am getting. There were slight shiny areas on the cross shafts. All of the u-joints rotate freely and smoothly with no binding.
I removed the driveshaft yoke, and it has maybe an 1/8th of an inch of play. (what is acceptable?) It also has about .008 of wear. (is that acceptable?)
I do get some noise from the throwout bearing with the the car in neutral with the clutch out. Would a bad throwout bearing and/or pilot bushing cause a severe viberation?
I also get some bearing noise in third gear from the transmission. I have a ton of miles on the car, and the trans has never been rebuilt. It shifts fine with no grinding. Could there be something in the tranny that would produce this type of viberation?
Any ideas and input would be greatly appreciated!
Thanks,Paul
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