Don't know if this went out last night but-
the easiest fix would probably be to get a proper tranny/driveshaft adapter
from Morrisservice or similar. This would at-least assure you that the length
of the driveshaft is correct (when matched to a common 1275 driveshaft)
BillM
> Date: Tue, 8 Dec 2009 09:49:23 -0800
> From: eap2140@yahoo.com
> To: Spridgets@autox.team.net
> Subject: [Spridgets] vibration at 35mph....and then some...
>
> My car is experiencing a vibration at 35mph or so. It worsens if you
> try to go any faster. The mechanic's thoughts on this are that the
> drive shaft is at a severe angle causing the u-joints to bind. I have a
> 78 Midget with a 1275 and Datsun transmission. We recently installed
> the rebuilt motor (it was pulled and installed with the tranny). Has
> anyone experienced anything like this? Could there be an alignment
> issue with the way it was re-installed? The suggestions are to look for
> a lower transmission rear mount and install wedges at the axle. I found
> the 2 degree wedges at Summit and I'm wondering if I need 2 or 4
> degrees. Do I need to pull the engine and trans to install a lowered
> rear mount? The other thing he noted was that the yoke is bottomed out
> on the rear of the transmission leaving me no play for the suspension.
> Potentially causing bearing wear. My first course of action will be to
> take the drive-shaft to the shop for evaluation and shortening.
> Thoughts on how much I should shorten it? The U-joints are an unknown.
> They flop around loosely when the drive shaft is out of the car. Not
> sure if they are supposed to be firm. There is no lateral slop in them.
> This is never-ending. All I want to do is drive my freakin' car.
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