North American Turbocoupe Organization



Bad Ride after suspension work
Entropy1988 Offline
Junior Member
#1
Hi, I'm restoring my 1988 TC that I bought new from the dealer in 1988.  Anyway, I've been having some work done to it by others since I'm have limited time.

I recently had the rear suspension worked on. New springs and urethane bushings installed on stock rear control arms. Also had the NOS quad shocks changed too.

I drove it today and it feels as if it doesn't move the ride is real bad, feels as if the suspension is binding and not moving very freely.  Any suggestions beside taking it all apart ?

I was contemplating replacing the rear lower control arms with the aftermarket ones from Maximum Motorsports but then the springs have to be changed again to Mustang springs etc. 

I'm wondering if I may have a shock that's frozen one of the ride control ones. Anyway, I'm open for suggestions on what to check first.  Also, any suggestions on a replacement clutch ?
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Jeff K Offline
Administrator
#2
A few possibilities: 1) The poly bushings you had put on are too "hard". Poly comes in different "hardnesses" (durometer hardness). 2) Especially if "hard" bushings, you can not use them for both ends of the lower and upper arms or the suspension will bind. Common to use poly bushings for the lower arms and "regular" softer bushings for the upper arms or a poly bushing at 1 end of the upper arms and "regualr" bushings at the other ends of the upper arms.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
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67 Honda 450 Super Sport - completely customized
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Entropy1988 Offline
Junior Member
#3
I'm going to take it apart this weekend and take a look.  The urethane bushings were installed in the lower control arms only. However, there could be a problem with the shocks. They could be frozen which I will check out. 


Perhaps it might be better to put the Rubber bushings back in.  I believe I may know where to get some.  Anyway, I will disconnect the shocks in the rear and see if the suspension moves like it should. 

Is there anything I need to know about using the KYB replacement shocks which will delete the ride control ? 

Thanks for your help.
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andrewjs18 Offline
Administrator
#4
(07-06-2019, 12:41 AM)Entropy1988 Wrote: I'm going to take it apart this weekend and take a look.  The urethane bushings were installed in the lower control arms only. However, there could be a problem with the shocks. They could be frozen which I will check out. 


Perhaps it might be better to put the Rubber bushings back in.  I believe I may know where to get some.  Anyway, I will disconnect the shocks in the rear and see if the suspension moves like it should. 

Is there anything I need to know about using the KYB replacement shocks which will delete the ride control ? 

Thanks for your help.

probably wouldn't be a bad idea to look into using mustang shocks if you're going to replace them as it opens up a vastly larger selection. if you go this route, you'll probably want to buy shock brackets so that the mustang shocks get mounted lower as the mustang shocks are 2-3 in shorter than factory thunderbird shocks.

check out this page: https://www.coolcats.net/modifying/shocks_struts.html

I sell the shock brackets here: https://tbirdcougarparts.com
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Entropy1988 Offline
Junior Member
#5
Found the lower rear control arm front rubber bushings (oval) but having having a hard time finding the lower rear control arm bushing. Got the oval ones for the front but not the round ones for the rear of the arm.  Any suggestions ?
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