Although the manual doesn't say so; I think that when they went to what
would be the TR6 upper A arms and ball joint and 3 deg. trunnions (CT6345),
the camber changed to 0 deg. from the TR3 and early TR4 2 deg. positive.
Bruce
----- Original Message -----
From: "Larry Young" <cartravel@pobox.com>
To: <fot@autox.team.net>
Sent: Sunday, March 10, 2013 11:42 AM
Subject: Re: [Fot] Neg. camber on 1964 tr4
> 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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