Babyblue66
Well-Known Member
Never mind. This is pointless.
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Also the bushing will shrink one to two thousands in dia. when it’s driven into the tail housing so you need to allow for that.
Never.I just want to know from anyone that's actually built a transmission if they've had a bushing that was a tighter fit than others. Obviously theres a reason it's loose, since I've seen others that are not.
Do not be lazy and do not be stupid. Measure and tell us how much the yoke pulls out. You have tried different yokes, bushings and tail housings. You missed it sorry.I've had this car since 1995, I haven't driven it in years. But I don't recall having that vibration at that speed. I Aldi tried the driveshaft from my 66 coronet, no change in the vibes at 40mph
The bushing is what centers the yoke. The spline is not what keeps the yoke tight in the trans.
I don't think that the engineers that design these have had it all wrong for 100 years. It's the splines between the trans output shaft and the yoke that do the work. The bushing is secondary.
If your yoke wobbles so much that it must rely on a tighter bushing clearance to restrict movement enough to eliminate vibration, you have other problem causing an imbalance in the first place. Look for that to solve your vibration.
Or just keep replacing bushings.
If they did ream the bushing to size, how do we get a tight fit since all bushings I've tried seem too loose in my opinion?The bushing is the primary. The factory installed the bushing, then reamed it to size. That is why they last so long. I have never seen the exact spec for bushing to yoke clearance. The current brass bushings are a little looser than the the old mopar babbit ones I used. The last neapco yoke I had was a .0005 small. The yoke should be bottomed and pulled out 1", if you have the extended dust seal it barely cleared the yoke at full load ride height. Anyway it is hard to get to .002 clearance with new bushings, I had my yoke hard chromed to get it tighter. You results will vary, but the fact the bushing is primary is fact.
If they did ream the bushing to size, how do we get a tight fit since all bushings I've tried seem too loose in my opinion?
No, these are installed.I do not have a good answer. As others have said the bushings do tighten up once they are installed if you are just trying a loose bushing on a yoke.