vibration help

[reborn55]

47 chevy, Mustang 2 all new suspension, wheel bearings, tires, driveline. Had a front end (steering wheel) vibration last year, found disc brake mounting brackets loose. Tightened and car rode and drove great for about 1000 miles. Headed for Louisville and steering wheel started shaking---not bad but noticeable and aggravating. Figured it threw a weight. Has front tires rebalanced--not too much help. Let it slide over the winter. Drove to trim shop was terrible vibration--drove it home not too bad. Turn a corner and rides pretty nice. Tried the wheels and tires off 55--rides pretty nice--put old wheels and tires on (Weld Rodiltes with floating center) and most of the vibration is gone. Had wheels indexed for awhile and then rotated 180. This vibration is driving me nuts. Can't figure it out. Going to replace the lugnuts---ends have been ground off at an angle and then have the wheels and tires road force balanced. Trying to get it ready for Louisville. Any help appreciated. Don't now why it comes and goes

[wayne petty]

please have a professional mechanic / wheel alignment tech ride in a car next to you while you drive it  while it shakes......
so he can see what it's doing


vertical movement ....

or

steering wobble....


which one......?

[reborn55]

steering wobble--I don't have access to balancer at work or I could give the wheels and tires a better balancing

[wayne petty]

but... you have some kind of tire shake... that you can feel in the steering wheel.....

there are two kinds.... and they have different sources .....


up and down movement ........   or   left and right movement.......      

someone has to drive along side to see what the front wheels are doing to get to the cause of this problem.....


there is one thing you might be able to do... figure out how to add a steering damper to the steering system...

build a bracket that threads on to the inner tie rod end behind the tie rod end... so you can mount a steering damper ... mount the other end on a bracket bolted to the 2 rack mount bolts...    this will not take much to do... and can be totally installed or removed without drilling... welding or any damage to the car or paint ...  steering dampers only have to be hooked to one side... and don't have to be level to work...  they only have to be centered... it also has to have enough travel to not limit your steering

[papastoyss]

47 chevy, Mustang 2 all new suspension, wheel bearings, tires, driveline. Had a front end (steering wheel) vibration last year, found disc brake mounting brackets loose. Tightened and car rode and drove great for about 1000 miles. Headed for Louisville and steering wheel started shaking---not bad but noticeable and aggravating. Figured it threw a weight. Has front tires rebalanced--not too much help. Let it slide over the winter. Drove to trim shop was terrible vibration--drove it home not too bad. Turn a corner and rides pretty nice. Tried the wheels and tires off 55--rides pretty nice--put old wheels and tires on (Weld Rodiltes with floating center) and most of the vibration is gone. Had wheels indexed for awhile and then rotated 180. This vibration is driving me nuts. Can't figure it out. Going to replace the lugnuts---ends have been ground off at an angle and then have the wheels and tires road force balanced. Trying to get it ready for Louisville. Any help appreciated. Don't now why it comes and goes

Ken, this is pretty far fetched but a long time ago we had a similar problem  & finally broke down the tire & there was a large amt of the liquid lube in there used to get the bead over the rim. Cleaned it out,rebalanced the tire & no more problem.Hope to see you at the last REAL Street Rod Nationals.

[reborn55]

Due to time constraints--nephews wedding and a couple of unexpected side jobs, I am going to go with road force balance on all 4 tires.  They may have to break the tire down anyway.  Hopefully it will cure most of it--if not it will be just like driving the interstates in Illinois all the way to Louisville.  See you there
Ken