My old Herald used to do that when it had a bad u-joint.
Andy D.
On 07/15/98 11:39 AM Buss, Grant said...
>
>I have a '68 Spitfire, just on the road late last year. Last winter I
>took the dif. out and replaced the seals and the two output bearings.
>When I took it out for a test ride, there is a vibration that starts at
>about 45 mph. I don't think it gets any worse as the speed increases. It
>is still there if you put in the clutch.
> I have replaced the transmission mounts. The drive shaft and the
>output shafts "look" good. I re-balanced the rear wheels. Last weekend I
>put a different dif. in.
> Can anyone please tell me where to look next. Would the bearings
>on the outboard end of the output shaft cause a vibration?
> thanks for your help.
>
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