SMOKED
Big Iron Mechanic
- Joined
- May 25, 2009
- Messages
- 259
The entire front end is new parts on a project truck along with the new t-style upgrade. Old track bar with new bushings but with two different brands. Truck has some old but not completely worn out shocks. Has a level lift. Truck has no death wobble with stock e-rated Michelins. On purpose i took some d-rated worn out bfg mud terrains and two bfg ats both sizes in a 315 70-17. Tires are not balanced just hand mounted on stock steel wheels, again for this test i did this on purpose. I hit this special test pothole at about 65 mph and wobbles with both sets of BFG 8 ply tires but not the michelins 265s. I want to prove its not the tires. I had someone turn the steering wheel back and forth while i was under the truck and did notice the frame end bushing has about 3/16 play and no play on the axle side. The bushing on the frame side is moog with the bushing in a steel cup and the axle side is a raysbestos. The one on the axle end (raysbestos) is just to urethane bushings no cup and a steel spacer. I took two steel washers and bore out the centers to fit around the steel spacer in the center of the frame side bushing and had to tap the track bar back into the frame and then torqued the bolt to 150 ftlbs. Did the steering check again and now no movement at all in the frame side bushing. But now I have about 1/8 play at the axle end when I had none before. Took on a test drive and i have to hit the pothole just right to get it to go into wobble at about 75mph with the unbalanced bfg tires. I will buy another moog bushing and do the washer trick on the axle side too and see what happens.
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