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Old 07-28-2015, 11:56 AM   #1
Captainkerber
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Default Scout 80 Vibration on initial acceleration

I have a 1962 Scout 80 with a 152
the rear end has been change out to a Dana 44 off a Scout 2
when I let off the clutch to accelerate it vibrates pretty bad.
Looking at the driveshaft you can see it bouncing back and forth when under load. Any ideas.

I don't remember if it started after I rebuilt the transfer case or when I upgraded to the Dana 44. Hopping for some suggestions before I start in on it again.
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Old 07-28-2015, 02:43 PM   #2
Scout-It-Out
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Default Re: Scout 80 Vibration on initial acceleration

What I want to know is how you can see the drive shaft while you accelerate? which way is the drive shaft moving? Are your u joints good? My first thought would be a clutch but the drive shaft shouldn't be doing anything but rotating.
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Old 07-28-2015, 03:33 PM   #3
FDChappie
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Default Re: Scout 80 Vibration on initial acceleration

It could also be a bad motor mount.
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Old 07-28-2015, 04:25 PM   #4
Robert Kenney
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Default Re: Scout 80 Vibration on initial acceleration

I guess I would ask if it shudders only while the clutch is slipping like when you take of from a start, and the shudder stops once your moving and you have your foot off the clutch pedal?

If so I would suspect the pressure plate.

If it shudders either way even while rolling, verify your u-joint phasing and angles.
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Old 07-29-2015, 06:03 AM   #5
ihpartsjeff
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Default Re: Scout 80 Vibration on initial acceleration

What gear ratio does the Scout II rear axle that you installed have?
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Old 07-30-2015, 06:15 PM   #6
Captainkerber
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Default Re: Scout 80 Vibration on initial acceleration

Ok so a little more information the
gear ratio is 3.54
it is different from the front I do to put it in 4 wheel unless in sand.
The motor mounts and tranmission mounts are new
if I let the clutch out very slowly the shuttering is minimual but that is going to burn the clutch out if I make that a standered practice. It is the worst when I star out up hill and is not noticeable at all when I am at speed even I f I accelerate. I do fell it if I slow down like to go over a speed bump with out putting in the clutch then try to accelerate. Low gear it is not as bad.
I did rebuild the transfer case and am did not have the correct measuring device to check the end play to decide the correct sizing for the shims. Would that cause this sort of shuttering.
And I could see the drive shaft by taking of the pannnel covering the transmission o the Scout 80.
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