1964 Triumph TR6

1964 TRIUMPH TR6 BY THE NUMBERS
While model years 1962 & 1963 saw only one model designation for all Triumph TR6s, the Triumph TR6S/S, 1964 saw a plethora of TR6 engine prefixes: TR6SS, TR6R, TR6C, TR6SC & TR6SR, and goes to show how the TR6 & Bonneville families had virtually taken over the Triumph lineup, in place of the stodgy 6T Thunderbird & the now-redundant T110 Tiger. Engine & Frame Numbers for the 1964 Triumph TR6 ran from DU6127 to DU13287, built from August 29, 1963 to August 5, 1964.
MINOR ENGINE CHANGES & IMPROVEMENTS
Just a year earlier, the entire 650 twin line was almost completely re-engineered, with a new unitized (unit-construction) engine & a whole new frame, among other things. And changes made at this point would have been purely developmental, solving toothing problems with all the new components. The engine breather was extended all the way out to the rearmost extreme of the bike. The Amal Monobloc carburetor was increased in size to 1-1/8" with all new jetting. The kickstart shaft got a seal to stem oil seepage. The "C" models ("C" stood for Competition, these were off-road race bikes) got modified engine sprockets allowing more accurate ignition timing, crucial for the Energy Transfer ignition system (run on alternator power alone, without a battery).

FRAME & CYCLE PARTS SLOWLY IMPROVE
Triumph Motorcycles had always made steady, incremental improvements to its products & the 1964 Triumph TR6 was no exception. Footrests were now attached to the rear engine mounting plates to improve ground clearance. A new front fork was introduced with external springs & rubber gaiters. The new 6-pint oil tank was rubber mounted with a left side cover to match. New Smiths magnetic anti-vibration gauges (speedo & tach) were added. Speedometer #SSM5 001/00 replaced #SC 5301/09; and tachometer #RSM 3001/02 replaced RC 1307/01 on all bikes equipped with gauges.

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1964 Triumph TR6 SPECIFICATIONS

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MORE TRIUMPH TR6 PAGES:
Triumph TR6
Triumph TR6, Pre-Unit (1956-1962)
.....1956
.....1957
.....1958
.....1959
.....1960
.....1961
.....1962
Triumph TR6, Unit-Construction (1963-1970)
.....1963
.....1964
.....1965
.....1966
.....1967
.....1968
.....1969
.....1970
Triumph TR6, Oil-in-Frame (1971-1973)
.....1971
.....1972
Triumph TR7
.....1973
.....1976

OTHER TRIUMPHS:
Triumph Bonneville
Triumph Trophy
Triumph Tiger
Triumph Thunderbird
Triumph Trident
Triumph X-75 Hurricane

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Check out these TRIUMPH BOOKS

COMPLETE BOOK OF CLASSIC & MODERN TRIUMPHS

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TRIUMPH MOTORCYCLES IN AMERICA

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TRIUMPH MOTORCYCLE RESTORATION

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TRIUMPH MOTORCYCLE RESTORATION, PRE-UNIT

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TRIUMPH BONNEVILLE & TR6 RESTORATION GUIDE: 1956-1983

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TALES OF TRIUMPH MOTORCYCLES & THE MERIDEN FACTORY

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TRIUMPH 650 & 750 TWINS OWNERS WORKSHOP MANUAL, 1963-1983

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TRIUMPH BONNEVILLE: ESSENTIAL BUYER’S GUIDE

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TRIUMPH BONNEVILLE: PORTRAIT OF A LEGEND

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ILLUSTRATED TRIUMPH BUYER’S GUIDE, by Roy Bacon

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TRIUMPH BONNEVILLE, 2001-2015

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TRIUMPH: PRODUCTION TESTERS TALES FROM MERIDEN

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TRIUMPH MOTORCYCLE RESTORATION GUIDE

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TRIUMPH OWNERS HANDBOOK, UNIT-CONSTRUCTION 350 & 500, Kindle

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TRIUMPH ILLUSTRATED WORKSHOP MANUAL 1945-1955, by Clymer

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TRIUMPH TWINS & TRIPLES

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FACTORY-ORIGINAL TRIUMPH TWINS, 1938-1962

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TRIUMPH BONNEVILLE & TR6, by Timothy Remus

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TRIUMPH MOTORCYCLES: FROM SPEED TWIN TO BONNEVILLE

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TRIUMPH MOTORCYCLES: THEIR RENAISSANCE & THE HINKLEY FACTORY

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TRIUMPH PRE-UNIT TWINS OWNERS WORKSHOP MANUAL

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TRIUMPH THRUXTON BONNEVILLE 1959-1969

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TRIUMPH MOTORCYCLES ILLUSTRATED WORKSHOP MANUAL 1937-1951, by Clymer

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TURNER’S TRIUMPHS: EDWARD TURNER & HIS TRIUMPHS

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TRIUMPH TWIN RESTORATION, by Roy Bacon

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TRIUMPH TIGER CUB & TERRIER 1952-1968, Haynes Repair Manual

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TRIUMPH 675 DAYTONA & SPEED TRIPLE REPAIR MANUAL 2006-2010, Haynes

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CLASSIC MOTORCYCLES: TRIUMPH

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TRIUMPH BONNEVILLE YEAR BY YEAR

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TRIUMPH TRIPLES

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TRIUMPH RACING MOTORCYCLES IN AMERICA

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TRIUMPH MOTORCYCLES

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TRIUMPH, by Roy Bacon

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TRIUMPH 750/900 TRIPLES & 1200 FOURS 1991-1999, Haynes Repair Manual

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TRIUMPH TROPHY BIBLE

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TRIUMPH DAYTONA, SPEED TRIPLE SPRINT & TIGER: 885/955 1997-2005, Haynes Repair Manual

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BSA & TRIUMPH TRIPLES GOLD PORTFOLIO 1968-1976

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TRIUMPH TRIDENT OWNERS WORKSHOP MANUAL, by Haynes

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TRIUMPH: A CENTURY OF PASSION & POWER

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TRIUMPH BONNEVILLE, by Osprey

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TRIUMPH TIGER 100 & 110, 1939-1961, by Roy Bacon

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TRIUMPH TIGER 100 & DAYTONA

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TRIUMPH BONNEVILLE, by Crowood

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TRIUMPH by Don Morley

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TRIUMPH TRIPLES & FOURS 1991 & 2004

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TRIUMPH 350 & 500 1957-1974 ESSENTIAL BUYERS GUIDE

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BONNIE: THE DEVELOPMENT OF THE TRIUMPH BONNEVILLE

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TRIUMPH SINGLES: EARLY DAYS TO 1974, by Roy Bacon

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TRIUMPH: RETURN OF THE LEGEND

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TRIUMPH FUEL INJECTED TRIPLES 1997-2000

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BOOK OF TRIUMPH TWINS 1968-1969, by Floyd Clymer

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THE TRIUMPH STORY: RACING & PRODUCTION MODELS 1902-PRESENT

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TRIUMPH 350 & 500 TWINS 1958-1973, Haynes Repair Manual

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TRIUMPH BONNEVILLE 2001-=2008 ROAD TEST PORTFOLIO

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HINKLEY TRIPLES & FOURS

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TRIUMPH PRE-UNIT TWINS

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HINKLEY TRIUMPHS: THE FIRST GENERATION

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TRIUMPH BONNEVILLE BIBLE: ALL MODELS 1959-1983

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TRIUMPH TWENTY-ONE TO DAYTONA: C CLASS 350 & 500 TWINS

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ORIGINAL TRIUMPH BONNEVILLE

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TRIUMPH 650 & 750 TWINS

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TRIUMPH MOTORCYCLES & CUSTOM BIKES

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TRIUMPH MOTORCYCLES

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TRIUMPH, THE LEGENDS SERIES

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TRIUMPH THUNDERBIRD SUPER PROFILE

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TRIUMPH SPEED TWIN & THUNDERBIRD BIBLE

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TRIUMPH BONNEVILLE T120/T140

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TRIUMPH MOTORCYCLES FROM 1950-1983

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TRIUMPH & BSA TRIPLES: THE COMPLETE STORY

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TRIUMPH THUNDERBIRD, TROPHY & TIGER ESSENTIAL BUYERS GUIDE

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TRIUMPH TIGER CUB BIBLE

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ROAD RACING HISTORY OF THE TRIUMPH 500 UNIT TWIN

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EDWARD TURNER: THE MAN BEHIND THE MOTORCYCLES

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SAVE THE BONNEVILLE: THE INSIDE STORY OF THE MERIDEN WORKERS CO-OP

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TRIUMPH DAYTONA 1991-2006 ROAD TEST PORTFOLIO

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TRIUMPH DAYTONA 2003-2009 ROAD TEST PORTFOLIO

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TRIUMPH TIGER 100 / DAYTONA: DEVELOPMENT HISTORY

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TRIUMPH, by Daniel Gilpin

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BOOK OF TRIUMPH MOTORCYCLES ILLUSTRATED SHOP MANUAL 1935-1939

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TRIUMPH: THE RACING STORY

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TRIUMPH BONNEVILLE T120 1959-1974, by Roy Bacon

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TRIUMPH BONNEVILLE GOLD PORTFOLIO 1959-1983

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TRIUMPH TRIDENT SUPER PROFILE

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ILLUSTRATED TRIUMPH BUYERS GUIDE, by Roy Bacon

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Last updated 8/3/17

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