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Classic/Antique Car Repair/1976 Celica rear suspension

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Question
Goodmorning, I have a 1976 Toyota Celica completly stock.A couple of months ago I decided to change the suspension bushings. I couldn't find OEM bushings so I went with the polyurethane. Since then the car's rear end tends to wonder going over bumps even when going in a straight line, it gets worse around turns. The coil springs are original units about 10 years old the shocks are new but on the soft side. No antisway bar in the back. The rear end is a solid axle with a 4 point set up with a torsion bar.
Any help will be apreciated.
Thank you, Evangelos  

Answer
I would suggest that you go over the installation of the bushings. It sounds like one or more of the bushings is not seated correctly and allowing the rear axle to shift under these conditions. The second thing to consider is that the poly bushings do not allow the rear axle to move the way the engineer designed it. In some cases this makes the handling of the car a bit squirmy. But check everything.
Brad

Classic/Antique Car Repair

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Brad Sears

Expertise

All automotive including antique and collectible. However if the car has been modified I can only answer in general terms and maybe get you pointed in the right direction.

Experience

Automotive tech instructor. Syndicated auto columnist 1970's though the early 1990's. Syndicated auto radio talk show, Ask Brad About cars, CBS Radio 70's through 90's TV Show "Last Chance Garage" 1980's PBS-TV syndicated. Auto instructor for the following companies: Fram Autolyte Holly Carter AMF Ford Motor University Of Conn Blue Hills Technical School Sugar River Technical Center Grew up in a family garage in Needham Mass and turned wrenches from the age of 14.

Publications
Manchester Union Leader, Nashua Telegraph, Motor Service Magazine, Yankee Magazine, Popular Mechanics (Saturday Mechanic early 80's), Los Angeles Times, New York Times, and lots more.

Education/Credentials
More than I care to remember. Basically Franklin Technical Institute in Boston, Northeastern University, Fitchburg State Teachers College, Tufts University, and a lot of factory schools along the way.

Awards and Honors
Moto Award winner. And much more.

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