Joe,
I am in the middle of installing TR4A/TR6 front suspension on my TR3.
Here is what I am using:
Upper fulcrum pins are the same.
Uncle Jack shortened TR4A/TR6 upper control arms.
Vertical link is TR4A/TR6.
TR6 ball joint.
Trunnion is TR4A/TR6.
Lower control arms are TR4A/TR6.
I also discovered that the nylatron kit (supplied by BFE) that fits the
upper inner TR4A/TR6 control arms also fits the lower TR4A/TR6 inner
control arms and the stainless steel sleeve fits the lower TR3 fulcrum
pins. The upper and lower fulcrum pins measure the same diameter and
same length on the TR3.
Bob Davis
Bill Babcock wrote:
> I used the TR3/4 lower arms, but I think they are all the same. I don't
> recall, but if you look at the part numbers in the Moss parts catalog you can
> put together a kit pretty easily. My upper arms are adjustable heim joints. I
> don't think Tony changed any of that. The pivot point is moved inward about an
> inch (I think--I have a good memory, it's just short). All this is written
> down of course, but I'm 3500 miles away from my notes.
> On Feb 13, 2010, at 2:12 PM, Joe Boruch wrote:
>
>
>> Did you use the TR6 frame brackets for the lower a-arms or do the a-arms fit
>>
> on the Tr3's lower fulcrum pins? Joe
>
>> ---------- Original Message ----------
>> From: Bill Babcock <billb@bnj.com>
>> To: "Joe Boruch" <jaboruch@netzero.net>
>> Cc: 'Friends of Triumph' Triumph <fot@autox.team.net>
>> Subject: Re: [Fot] TR4-6 front end technical queries
>> Date: Sat, 13 Feb 2010 14:09:39 -1000
>>
>> I didn't care. The bump steer and camber gain of the TR3/4 is so screwed
>>
> that I knew I would be tweaking everything anyway. Top arm angle is the least
> of the problems.
>
>> On Feb 13, 2010, at 2:04 PM, Joe Boruch wrote:
>>
>>
>>> Bill, how did you get the TR6 stuff to work with the TR3. When I looked at
>>>
> it once, I noted that the TR6 upright is taller than the TR3/4 one. That
> would change the angle of the top A-arm. Joe(B)
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