Last weekend I helped a friend install the Goodparts adjustable trailing arm
brackets in an attempt to cure the ruptured duck look on the rear wheels of his
TR 6. When we removed the Goodparts performance springs (I'm not
sure what he calls them) I compared them to the stock ones and
noticed that they were at least an inch shorter. Even with the
aluminum spacers he had been using, the negative camber (is that the right
term) with these springs was way too much. He also complained about the harsh
ride so we reinstalled the stock springs at the same time.
The newly installed stock stock springs ride considerably better than the
"racing" springs which is logical and the ruptured duck look was
remedied. Since then he noticed that the wheel to fender height
has eased considerably which is probably the way his 75 TR 6 looked
when it was new.
This brings up two questions, one is why was the effect of the Goodparts
springs so great? and secondly, what caused the increase in height between
the early 6s and the later sixes? I know the increased height was due to
government mandates. Was this increased heightr accomplished by a
change in the configuration of the trailing arms? If so could
replacing the late model trailing arms with those from an earlier ones
reduce the ride height? Also, how did they increase the front ride
height?.
Mike Lunsford, 1970 TR 6
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