Re: B Body Dana 60, Pinion Snubber, Driveline Vibration
[Re: bulletpruf]
#326664
05/29/09 12:23 AM
05/29/09 12:23 AM
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Joined: Mar 2003
Posts: 9,100 Rogue River, OR
Jeremiah
master
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master
Joined: Mar 2003
Posts: 9,100
Rogue River, OR
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Whoa whoa whoa.... If you are rolling along at 80 mph and the vibration is there...and you put the car in N and the vibration goes away... would you not want to investigate the converter/flexplate/flywheel balance? If the driveline was causing this the vibrato would still be there even in N when the car is rolling. Personally I'd think about finding a different driveshaft shop. It is straight or it's not. If not it needs to be retubed or it will never be correct.
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Re: B Body Dana 60, Pinion Snubber, Driveline Vibration
[Re: bulletpruf]
#326668
05/30/09 04:44 PM
05/30/09 04:44 PM
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Joined: Aug 2008
Posts: 775 San Antonio, Tx
bulletpruf
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 775
San Antonio, Tx
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Took it to the local tire shop today. Wheels were all out of balance to some degree. All balanced out, but the two front ones didn't seem to be 100% true (brand new reproductions), so he said that I might still have some slight vibration. Sure enough, the vibration is still there, but significantly reduced. Need to hook up the speedo to see where it kicks in at, but I think it's probably around 70 mph.
Thanks for all the input!
Scott
Last edited by bulletpruf; 05/31/09 04:47 PM.
Please Check Out My YouTube Channel for Vintage Musclecar and Truck Rescues and Builds -- https://www.youtube.com/@THEBULLETPROOFGARAGE/videos
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Re: B Body Dana 60, Pinion Snubber, Driveline Vibration
[Re: 68jim]
#326672
06/11/09 02:58 PM
06/11/09 02:58 PM
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Joined: Aug 2008
Posts: 775 San Antonio, Tx
bulletpruf
OP
super stock
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OP
super stock
Joined: Aug 2008
Posts: 775
San Antonio, Tx
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Quote:
Scott,
Hate to chime in late here but I now find myself in your situation, just a little bit worse... Funny thing is I have the same set up in my car, 68 Road Runner-426-727-4.10 dana and live in Virginia...go figure... Car is a total restoration,and I had my drive shaft balanced prior to installation with new joints. Up to this point I had only driven the car around the neighborhood and a few small burnouts in front of the housewith no issues. I drove the car through town (3 miles/40MPH) for the alignment. After that was done I took it out for the highway run it it felt really good under throttle to about 70 or so and then I let off the throttle and it started the vibrations pretty strong. I slowed down and varied speeds and it seemed like it was more pronounced during deceleration. I took it home and put it up on the lift and everything looked and felt OK. In my mind I was thinking something from the rear end since the vibration was in the body and not the steering wheel. I took it out one more time and still had the same problem...all of a sudden the vibration went away and for a second or so I was pretty happy until I looked out in the mirror and saw nothing but smoke...and I mean a LOT of smoke... The heavy smoke cleared up but I was still getting intermittent puffs as I slowed down and got off the highway. Once off I pulled into a parking lot and discovered trany fluid everwhere under the car. I nursed the car back to the garage but had to go under 25 MPH as the car had vibrations bad enough that I did not want to chance anything by pushing it. Once under the car I found the tail shaft housing in two pieces, it broke just after the mount. Once I got things cleaned up a bit I pulled the driveshaft (the weights are still in place)and the U-joints still feel good through full travel. I spun the shaft out the back of the tranny and it is straight as best as I can visibly see. Good thing was that there was no damage to the body other than the mess from the tranny fluid. This happened last weekend and I had to leave town before I could have the driveshaft re-checked... I also still need to drop the tranny pan and see if there may be any suprises...I love this hobby...
Anyone else ever bust a tailshaft housing???
Jim 68 Hemi Road Runner
Jim -
Hey, nice car! Do you have any pics you can send? If so, my e mail is bulletpruf_99@hotmail.com
Thanks,
Scott
Please Check Out My YouTube Channel for Vintage Musclecar and Truck Rescues and Builds -- https://www.youtube.com/@THEBULLETPROOFGARAGE/videos
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