It seems like it would be difficult to get enough change in camber for a
TR3/4 by reversing the fulcrum. The factory spec is +2 degrees, so it
takes quite a lot to get to -2. Lowering helps a little, less than 1/2
degree. If you shorten the upper A arms as many of us have done, you
have to remove at least 1/2 inch. I wrote a short report when I studied
the suspension on my TR3 (see
http://tildentechnologies.com/downloads/TRsuspension.PDF). There is a
neat way to shorten the upper A arms that I discovered from Bob Kramer
that does not involve cutting them in two. I can put up a photo if
anyone is interested in it. The modification is not obvious for
organizations that do not permit Heim joints, etc.
Larry
On 3/9/2013 1:14 PM, Tony Drews wrote:
> What Richard Good just described for the TR-6 applies to the TR-4 as
> well.
>
> Tony
>
> Richard's message if you missed it:
> "Reversing the upper fulcrum from factory orientation pulls the
> control arms in 1/4" and adds about 1.3 degrees negative camber if I
> remember my calculations correctly. You can do it without removing
> the control arms from the fulcrum. Just remove the four bolts
> holding the fulcrum to the tower and the two bolts through the ball
> joint and remove the whole assembly. Then hold the fulcrum and spin
> the control arms 180 degrees then bolt the whole assembly on the other
> side of the car. This keeps the front control arm in the front but
> reverses the fulcrum.
>
> Preferred camber will depend on the tires. The Hoosier A6's that I
> run for autocross and hillclimb want 3 degrees. They are 225/45-15 on
> 7" rims. To get that much camber and to keep the tires clear of my
> unmodified fenders I reversed the fulcrums and then slotted the bolt
> holes to slide them in even further. I just took the worn out tires
> off and the fronts wore fairly even. The rears were also set at 3
> degrees but wore more on the inside from squatting under power. I
> backed it off to 2 degrees to see how that works out. Also changed to
> a slightly stiffer spring."
>
> At 11:22 PM 3/8/2013, Jon Gannaway wrote:
>> I am preparing a 1964 tr4 to vintage race in California. I am
>> looking for
>> simple and easy ways to get negative camber in the car. Any
>> suggestions
>> would be helpful.
>>
>> Jon Gannaway
>> 831-402-4080
>>
>>
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