Vibration.
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Joined: Jan 2007
Posts: 82
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From: Portsmouth Virginia
Vibration.
Drove the 76 a little today about 60 miles or so.
Its a 76 4spd and I'm hunting a vibration.
Smooth under 50 bad at 60 and a little better at 70.
Mostly in the shifter, I can feel it a little in the wheel.
Where would you start?
U-joints? I just put on new tires so thats most likely out.
Its a 76 4spd and I'm hunting a vibration.
Smooth under 50 bad at 60 and a little better at 70.
Mostly in the shifter, I can feel it a little in the wheel.
Where would you start?
U-joints? I just put on new tires so thats most likely out.
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Joined: Jan 2007
Posts: 82
Likes: 1
From: Portsmouth Virginia
Yea, I think I will pull the drive shaft today and check all the half shafts to.
Checked the weights look good. Also checked the water pump, had a bad bearing one time made it vibrate but went up with rpm. This is only at speed.
Also have a little tapping sound/feeling in the car, not bad but just started when the vibration got worse. Might be clutch, but I hope not!
At least I have several other toys to drive!!
Checked the weights look good. Also checked the water pump, had a bad bearing one time made it vibrate but went up with rpm. This is only at speed.
Also have a little tapping sound/feeling in the car, not bad but just started when the vibration got worse. Might be clutch, but I hope not!
At least I have several other toys to drive!!
Race Director
Joined: May 2003
Posts: 10,956
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From: California
i had a long thread on this.... ended up being several problems, not just one. But the two major culprits were 1. drive shaft alignment was about 80%, and 2. flywheel was out a little, the other 20%.
Le Mans Master
Joined: Jan 2007
Posts: 5,485
Likes: 7
From: Peekskill NY
I had a vibration problem that would start around 3500 rpm and get worse as the revs increased. The shifter would buzz, it would transmit through the whole car. I checked everything and couldn't find anything. Then I needed to change the water pump and discovered that the fan hub had elongated bolt holes and that the fan & fan clutch were off center causing the vibration. I would never have considered this as the source. Now no more vibration.
Good luck with this as it can be frustration to track down.
Glenn
Good luck with this as it can be frustration to track down.
Glenn
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Joined: Jan 2007
Posts: 82
Likes: 1
From: Portsmouth Virginia
I will have to check those two things.
Its up in the air now so there's no turning back "jack stands scare me to death".
Think I will pull the rear all the way down and be done with it, did a fiber spring and new shocks a few years ago and should have pulled the shafts/ujoints and all the bushings back then...live and learn.
As for the water pump y-not Its old and I have nothing to loose.
Glad I have my 79 bronco to pimp when Im working on the vette, you allways need a backup classic to drive!!!
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Thread Starter
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Joined: Jan 2007
Posts: 82
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From: Portsmouth Virginia
Well the cars been off the road for a couple of months.
I replaced all the ujoints, that did not fix it.
I did find the problem anyone want to guess what the problems was?
If you guess bent rim you are a winner.
I took my spare off and swaped the rims and tires. Fixed, ran 90 today no vib!!!!!
Also found that my spare is a original wide O thats never hit the ground!
I replaced all the ujoints, that did not fix it.
I did find the problem anyone want to guess what the problems was?
If you guess bent rim you are a winner.
I took my spare off and swaped the rims and tires. Fixed, ran 90 today no vib!!!!!
Also found that my spare is a original wide O thats never hit the ground!