Classic Mustangs (Tech) Technical discussions about the Mustangs of yester-year.

Pulsation / Vibration only when turning right

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Old Jul 23, 2009 | 01:42 PM
  #11  
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What are your alignment specs, do you know?
Old Jul 23, 2009 | 01:46 PM
  #12  
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This may be a silly question, but what did you do to switch from PS to MS? Did you use one of those MS swap valves or did you actually replace the drag link and pitman arm?
Old Jul 23, 2009 | 03:14 PM
  #13  
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Originally Posted by 67mustang302
What are your alignment specs, do you know?
Yup, just had it aligned to:

1/8" Toe IN
+2.5* Caster
-1* Camber
Old Jul 23, 2009 | 03:15 PM
  #14  
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Originally Posted by urban_cowboy
This may be a silly question, but what did you do to switch from PS to MS? Did you use one of those MS swap valves or did you actually replace the drag link and pitman arm?
I used one of the MS swap valves. I would suspect this part too, but I had the vib with the PS also...
Old Jul 23, 2009 | 03:42 PM
  #15  
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Did it pulse before you did the Granada swap?
Old Jul 23, 2009 | 03:45 PM
  #16  
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Originally Posted by urban_cowboy
Did it pulse before you did the Granada swap?
Negative.

The swap was my first time ever doing new wheel bearings. I wonder if I toasted one or both. Didn't have the correct size socket for proper torque so I just did the snug down till it starts to grab then back off a 1/4-1/2 turn...
Old Jul 23, 2009 | 04:11 PM
  #17  
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I would think when you put the front end on a lift so that the wheels are off the ground, you could shake the tires. If they are solid, bearings should be good. If there is slop then maybe a bad bearing.

Did you replace the tie rod ends when you did the swap? The Granada tie rod taper is larger than the Mustang's I believe.

Have you read anything about bump steer? It is often caused from a geometry problem from modifying steering components. Did you do anything to correct bump steer from the swap?

My guess is you have slack in the steering linkage somewhere or possibly a geometry issue.
Old Jul 23, 2009 | 04:18 PM
  #18  
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My dad and brother recently rebuilt a 1968 Chevy Corvette and while driving, they had a similar vibration and popping sound when turning to the right.

Their problem turned out to be with the u-joints and rear axles. They replaced the u-joints and polished the axles and the vibration and popping went away.

Hope that was helpful somehow.
Old Jul 23, 2009 | 04:23 PM
  #19  
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Originally Posted by urban_cowboy
Did you replace the tie rod ends when you did the swap? The Granada tie rod taper is larger than the Mustang's I believe.

Have you read anything about bump steer? It is often caused from a geometry problem from modifying steering components. Did you do anything to correct bump steer from the swap?
Yes, the kit from CSRP (discbrakeswap.com) included the proper tie rod ends.

It was my understanding that CSRP's new spindles are supposed to take care of the bump steer / geometry issue, so I haven't taken any measures to correct bump steer. I've had it on the road a fair bit and haven't noticed any bump steer.

I think my next course of action will be pull the bearings, inspect, repack and get the right socket to properly torque them. Then go through and recheck and retorque all the steering components once again...
Old Jul 23, 2009 | 04:41 PM
  #20  
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Originally Posted by dbgrigsby93
My dad and brother recently rebuilt a 1968 Chevy Corvette and while driving, they had a similar vibration and popping sound when turning to the right.

Their problem turned out to be with the u-joints and rear axles. They replaced the u-joints and polished the axles and the vibration and popping went away.

Hope that was helpful somehow.


Interesting, all those parts are new too... Maybe I'll rotate the driveshaft 180* and see if that does anything.

That's the crappy part about having everything be brand new, narrowing down trouble parts turns into a chore.... Thanks for the advice.



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