Triumph TR4A, 1965-1967
First things first - should that hyphen be there or not? (TR-4A vs. TR4A)
I originally put the hyphen in the title because that's the way the name appeared in Triumph's first ad for the car ("This month Triumph introduces next month's two best-selling sports cars"). However, it doesn't appear that way in many other places: not in the owner's or workshop manuals (though the workshop manual talks about the "TR.4A" a fair bit), nor in Robson's nor Piggot's books. The Kastner Competition Preparation Manual supplement talks about the TR-4A, though.
I guess the answer is that they're all correct!
Externally, the TR4A looks like a continuation of the TR4. The cars share a few pieces of sheet metal and have much the same engine, but most everything else differs. For starters, the TR4A is on a much wider frame and a redesigned suspension. The front suspension is adjustable for camber and the rear suspension is independent - or could be. Triumph dealers in the US convinced Standard-Triumph that they could continue to sell non-IRS cars at a good price, and Triumph responded with a clever solid axle design that fit into the IRS frame.
Further information about the Triumph TR-4A includes:
- TR4A History (A brief production history of the TR4A.)
- TR-4A Production dates and numbers
- TR4A Spotters Guide
- TR4A Buyer's Guide. (What to look for when buying, ranges of price, parts availability, etc.)
- TR4A Spare Parts Fact Sheet
- TR4A Owners WWW Pages
- TR-4A Photo Archive