Welcome Visitor! Please take a few seconds and Brandon.S
New Member
- Joined
- Dec 27, 2015
- Messages
- 11
- Reaction score
- 0
- Points
- 1
- Vehicle Year
- 94
- Make / Model
- Ford
- Transmission
- Manual
First of all, manual, 4.0, Ex Cab, 98 driveshaft in a 94
Alright, so recently did a couple of changes to my Ranger. This included a shackle flip. Before the pinion flip my pinion was high and pitched up when taking off, causing a vibration.
The shackle flip brought the angle way down. I measured this up and I thought I ended up with the pinion 2 degrees down vs the transfer case flange. (I'm going to have to measure again)
Now at highway speed I get a vibration when letting off the throttle, if I'm all the way off the vibration stops (i.e. only at part throttle). Is this the pinion pitching down and causing a bind? The odd thing is that I also added Jame's Duff Traction Bars, I would hope they prevent a lot of pinion movement. There are no vibrations below 55 mph, in fact, at all other speeds it is smother than ever.
When apart I also added new u-joints and painted the driveshaft so I don't suspect a bad u-joint. Is there anything I should be looking at besides pinion angle?
One mistake I might have made is possibly not mounting up the driveshaft to the companion flanges in the same orientation. But the parts of the driveshaft itself were marked and reassembled properly. Since it's a swap there is no original orientation, but I could have matched how it was on there previously.
Thanks in advance!
Alright, so recently did a couple of changes to my Ranger. This included a shackle flip. Before the pinion flip my pinion was high and pitched up when taking off, causing a vibration.
The shackle flip brought the angle way down. I measured this up and I thought I ended up with the pinion 2 degrees down vs the transfer case flange. (I'm going to have to measure again)
Now at highway speed I get a vibration when letting off the throttle, if I'm all the way off the vibration stops (i.e. only at part throttle). Is this the pinion pitching down and causing a bind? The odd thing is that I also added Jame's Duff Traction Bars, I would hope they prevent a lot of pinion movement. There are no vibrations below 55 mph, in fact, at all other speeds it is smother than ever.
When apart I also added new u-joints and painted the driveshaft so I don't suspect a bad u-joint. Is there anything I should be looking at besides pinion angle?
One mistake I might have made is possibly not mounting up the driveshaft to the companion flanges in the same orientation. But the parts of the driveshaft itself were marked and reassembled properly. Since it's a swap there is no original orientation, but I could have matched how it was on there previously.
Thanks in advance!
