vibrations - Team Camaro Tech
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post #1 of 4 (permalink) Old Apr 26th, 01, 05:10 AM Thread Starter
 
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recently freshened up the front end of my 69 rs 327 camaro, purchased new tires (balanced of course) but i can't seem to locate the source of a vibration that shows up at 65+ mph and gets worse at higher speeds? the drive shaft has no signes of damage or dents the balance tag is still in place, the motor has never been out of the car since i've purchased it, I've replaced both the front inner/outer wheel bearings the car has the original drum front brakes :-(
any idea's as to where to look next ??
thanks RC

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R.Chambers
69 rs327 a/t & SS396 m/t
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post #2 of 4 (permalink) Old Apr 26th, 01, 06:34 AM
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The tires can show good balance on a spin-balancer and still be out of round; have the tire shop put them back on the balancer and check the runout at the tread surface.

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post #3 of 4 (permalink) Old Apr 26th, 01, 04:53 PM Thread Starter
 
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also the reason for the tire change was an attempt at resolving the problem in the first place ? the vibration was the same with the old tires therefor I don't believe the problem is in the tires, one other note: the car has after market 'old' alum SLOT rims but again they are in good shape with no visible damage,??? this is really starting to drive me nuts !!

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post #4 of 4 (permalink) Old Apr 27th, 01, 01:23 AM
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If the vibration is in the steering wheel, then problem with front end.

If you feel the vibration in the seat, then problem with rear end, etc.

You may have lost a rotor/drum weight. You suggested the wheel/tire combo is balnced. This is good, but see if you can find a shop having the balancer that spins the wheel/tire tire/drum on the vehicle. Remember those? The mech put a cover onto an expandable frame on the wheel and had four knobs sticking out, he would put his thumb out in the air and balance the tire. This will tell you how good the balance is, but remember, if you elect to balance the combo this way, when you remove the wheel, be sure to mark the stud closet to the valve stem, this way the wheel will go back on in the same location.

Set the rear axle on jack stands. Chock the front wheels, start engine, place in high gear, check driveshaft, etc. for straightness while rotating. May have lost weight on driveshaft. Could also be a bent axle/wheel?

Loose steering gear box, tie rod ends, idler arm, wheel bearings, motor mounts, trans mount, worn shocks, haven't reached Mach II yet, with alum slotted wheels, may be a drum weight affecting the flat seating of wheel to drum, some times the weight is in the wrong place for wheel to set flat, torque down nuts and drum becomes warped, but then you would have avibrating brake pedal.

Just some ideas, good luck

Everett 68/350/PG/11.90/115mph
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