In a message dated 98-02-09 13:34:51 EST, brit4a@yahoo.com writes:
> Wanted to ask the all knowing list,if late 4and 4A
> frames are the same.
>
No. TR4 frames are the same, with only minor changes if any, from CT1 to the
end of the TR4 model (CT40304, I think). The TR4A frame was redesigned to
accomodate IRS and is quite different. Triumph intended all TR4A's to have
independent rear suspension (IRS).
However, the TR4A does come in two flavors 1) Independent Rear Suspension
(IRS) or 2) rigid axle (which means it is rear-suspended sort of like a TR4).
The rigid axle configuration was the result of US dealers saying that they
could better sell a car w/o IRS. The frame for either config is not the same
as the TR4 frame.
See the "big 3" catalogues and Piggot's book "Original Triumph TR" for
pictures/drawings. Cheers.
Art Kelly '64 TR4 CT33118L (original owner)
VTR TR4 vehicle consultant
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