My Powder Blue 1962 TR-4 Page.
My Signal Red (well it was once) 1962 TR-4 Page.
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The Triumph TR-4, the best of the Sport Triumphs.
(HEY, it's my page, I can believe what I wish.)
There are many, many Web Pages dedicated to different Triumph models. The best represented older model seems to be the TR-3. TR-6s (the leader in number of Web Pages), Wedges and Spitfires (almost tied with the -6 for Pages) all have a significant number of Pages. But among the post war "sport" models the TR-4 is sorely absent, in fact I think the number of Pages with information about, or pictures of, the TR-4 is probably less than ten.
While this page is not meant to be technical in nature, it does contain some basic technical information. There is not, currently, a good on-line source of technical information on the TR-4. However, basic (and some not so basic) information can be obtained from the Vintage Triumph Registry and Team-dot-Net.
The TR-4 was produced from August 1961 to August 1967. Over this six year span more than 68,000 units were produced. The TR-4 designation was changed to TR-4 A in 1965. The same basic design continued on as the TR-250, and TR-5, until December 1968 (although only the sheet metal was the same by then).
These cars came with a 104 BHP, 2138 cc engine. Not exactly muscle car material, but when you consider the weight, right peppy. This engine was dropped for a 2.5L six cylinder in the TR-5 and TR-250.
Front disk brakes were a standard feature, and had been since the 1956 TR-3. In fact the caliper used was a dual piston design, this basic design is now being seen (again) on some motorcycles and sports cars.
As with all Triumphs there were many improvements and changes made during the TR-4 and TR-4 A production run. Many of the small changes were made "on the fly" and are not documented very well. As an example, the trim over the Windscreen and around the Cockpit was changed from chrome over brass to Aluminum early in the production run. This fact is known, but when it changed is very vague. (Anybody got an answer to this one? E-mail me at Triumph_TR4@hotmail.com )
In 1965 it became the TR-4 A and the vehicle received a minor external makeover (mostly lights and chrome), but, most importantly, it also recieved major chassis and suspension changes. An independent rear suspension (IRS) was made available, although this option was not all that popular here in the USA. I guess it was to new-fangled and some American drivers did not trust it. All vehicles originally equipped with IRS carried a Commissioning number starting with CTC (as opposed to non-IRS cars, which started with CT). IRS cars also had a chrome "IRS" emblem on the Trunk (Boot) lid.
E-mail me at: Triumph_TR4@hotmail.com