Technical Tips > Brakes, Suspensions, Steering, Wheels & Tyres

66 vibration

(1/4) > >>

bootlegger:
I took my 66 coupe for a run today. when I got to 110 on the freeway it started vibrating. It wasnt violent  sort of like a rumbling. If you slowed it went away.
I didnt feel like a tyre out of balance.
When I got home I checked the air pressures and then jacked up the rear end.
I rotated the wheels and at one particular point in the rotation the wheel almost became impossible to turn. At this same point the suspension seem to lift and then drop over this hump and turn again  until it returned to that point.
I also noticed a bit of play in the tailshaft yoke where it enters the gear box.
Its pretty unerving when it happens. I didnt try and drive faster to see if it would drive out.
Any ideas? Could it be the half shafts or the tailshaft?:huh:

Dave 0413766501

Reklaw:
Dave, if you jack up the rear of the car, the suspension hangs down and the halfshaft universals will foul. That's normal. If you can have someone else try to rotate a wheel and you lay underneath and watch the universals, you'll see what I mean. What about if you grab the top & bottom of each rear wheel and check for movement, how much is there? Do the same for sideways movement. Is there any noise from the rear end when you're going slow and turning?
Bob

bootlegger:
Bob thanks for that. I thought there would be an explanation re the tight spot. There is no noise coming from the diff when I turn etc but there is a bit of backlash.
When this vibration comes on there seems to be a noise then.
I did wobble the wheel when they were up in the air and didnt notice any movement. Maybe it is a wheel balance problem.
I took the car up Macquarie pass from Albion park the Moss Vale a few weeks ago.
I gave it a real hiding. Maybe something is bent

Scott:
It could be a uni joint somewhere in the system.  When was the last time they were changed?

bfit:
Yes if you have a uni starting to go that will give you that vibration problem
Also
How old are the tires they may be starting to separate between the layers  
have a look a see if you can see any bulging  in the tread  it happened to me and the vibration was  very bad over 70 MPH
Bfit

Navigation

[0] Message Index

[#] Next page