Earl
TR4 front suspensions have solid lower pivot arms welded into the spring
towers, with gussets at each end. The lower A-arms have to be assembled
in place on the pivot arms, and the caster and camber are not
adjustable. The design was time-consuming to assemble, but has proven
very durable. With the TR4A, Triumph went to an adjustable front
suspension using U-shaped brackets bolted to the frame for the lower
A-arm pivots. These brackets were each held by a single bolt (!) At
some point they saw the weakness in this and went to a 2 bolt bracket. A
common upgrade on early 4As was to drill a second hole in the brackets
and add another bolt. The strengthening kit cosisted of a set of
gussets to weld up between the bracket mounting pads and the frame. I
helped a friend with a 4A do this, but it was several years ago and I
don't remember how the gussets went in. This kit does not apply to the
TR4, nor is it needed. I have 195/65ZR15 Yokos on 15x6 Panasports, and
it all works very well indeed.
Cheers
Pete Fullam
CT19207L
Egbman1@aol.com wrote:
>Group,
>I've heard that early TR4A's had a weakness in the front suspension and that a
>strengthening kit was/is avaiable. I know there were some changes between the
>4 and 4A front suspension. But, is the same weakness found in the TR4? Would
>there be undue stress to the front suspension running 15 x 6 panasports with
>195/65R15's on my TR4?
>TIA, Earl
>CT11550L
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