14 Апр 2015 | Author: | Комментарии к записи 1983 TRIUMPH BONNEVILLE отключены
Norton water-cooled Classic


Triumph Bonneville TSX, custom in Gypsy Red.


As close as they to the brink of extinction, the optimists at the Co-operative still believed it be turned around, and the only way was product. Nothing like an new DOHC 4-cylinder or the like, but a whole new 4-valve (per head for the antiquated 1983 Bonneville was within reach. As as this sounds today, it made sense at the beginning of


What the didn’t see was the life-or-…, day-to-day the workers management of the Co-op going through just to survive. There always to be a salvation of some sort reach, however, either public or private funding.

such that they even afford to produce the Triumph Bonnevilles that had ordered by dealers, they told by all the experts that would only be possible a solid 5-year plan to things around. And new products at the top of the list.

On a shoestring, the resourceful at Triumph managed to cobble the next-generation of Triumph Motorcycles, the 900cc DOHC water-cooled that stole the NEC Motorcycle in 1983 in England. Alas, potentially successful machine reached production.


Triumph needed to do something for sure and in their last year in they really pulled out the Considering how strapped for cash were how little they had to with in terms of modern manpower (over 2/3 of the Meriden had been laid off by this doing a radical redesign of the entire top end major parts of the end was a daunting ambitious undertaking. But those scrappy Brits at found a way.

The timing of a 1983 Triumph Bonneville with 8-valves-per-cylinder electric A very rare machine And very fast.


With their credit falling the company running out of the determined team cobbled two new Specials for the 1983 model The 1983 Triumph Bonneville TSX highly-styled appearance package) the 1983 Triumph Bonneville TSS 8 valves in the head (4 valves per


Sadly the radical TSS was a case of too little too it wasn’t possible to fully the bike as it needed to be a real contender. But this new engine promise to pump some back into the aging Triumph Bonneville with a 59 hp a top speeed of 125 mph.


The TSS was a standard 1983 Triumph T140ES with the addition of an alloy cylinder head was based on the old Westlake 8-valve heads of the 1960s, with technical help from a license to produce them. The cases were standard with an all new crank turning on bearings, supposedly able to to 10,000 rpm. This forging had larger diameter big-end journals thicker

Interestingly, the bore centers spread apart by 1/2 so offset rods were used to up the difference. The top end cooling fins of a higher pitch than Bonnies, and more square. ratio was 9.5:1 the conventional gasket was replaced with 2 that seated in the head.

were still 10 head but the outer 4 were now studs all the way through the cylinder block to the The 4 valves per cylinder were now steeply angled than (the valves in a traditional 650/750 twin are at a 90-degree relative to each other; the TSS were at 60 degrees, which for better flow) were by forked rocker arms, operating 2 valves apiece.

The head was cast such the rocker shafts no longer in detachable rocker boxes, they were supported by bosses cast right the head. This is an improvement would have benefited the Triumph Bonneville engine since the detachable rocker are under such rocking stresses while torquing the head (pre-1971) the were to leaking. The entire top cover be removed on the TSS revealing the valve making it much easier to the valve clearances.


The 1983 Triumph Bonneville TSS was a good design, but unfortunately control issues plagued it the start. Porous head were a problem. The TSS used Amal Concentric MkII in England, but the US had to do with the same old Bing CV carbs, because of regs.


The standard Triumph Bonneville T140ES on pretty much unchanged. The Triumph Bonneville TSS got a Brembo master cylinder the swing arm was to accomodate a larger rear a 5.10 X 16, with a 3.25 X 19 up Rear shocks the the TSX were with chrome springs bodies. Marzocchi shocks used on all other models year, with the TSS using top line Strada units remote oil reservoirs.

The TSX got polished fork sliders but the of the line got the black-out treatment. alloy wheels were now to every 1983 Triumph with the exception of US-market which retained the wire


The Euro tank was used on all except the TSX which sported a 3.6 US gal tank with hinged fuel cap only one petcock crossover tube). The wild new striping packages were now vinyl applique’s, not painted-on Applied on tanks with surfaces, wrinkles were The 1983 Triumph Bonneville got chromed fenders again, but all were painted.

The TSS could be all black with gold pinstripes. Paint colors for were more plentiful ever in Triumph’s history no less than 8 color for the UK 8 for the US markets.


In the end, one wonder if they knew how to the end it was, otherwise why come out a radical new bike? They have made themselves that the TSS would do the trick, get back into the game. In the hot rodding a 40-year-old pushrod would have never in the face of technologically-advanced new 3-, 4- and even bikes pouring out of Japan.

The same year Triumph its quirky TSS, Honda out with its 750 Interceptor with DOHC, 16-valve 90-degree V-4 that was fast, smooth, well put together. The Interceptor in a whole new age of race-inspired sportbikes would certainly have outclassed the ancient 1983 Bonneville, no matter how it was modified. had changed, progressed moved on.

The Bonneville, once the fastest motorcycle in the world, was now an outdated, relic of the past.

1983 Bonneville T140-TSX, factory in Black, designed by Triumph’s US Triumph Motorcycles America to accommodate the ‘custom cruiser’ It had what was called the West actually sold fairly Unfortunately, Triumph was so broke by point that they afford to build the bikes to the orders.

The 1983 Triumph TSS was a last-ditch attempt by Triumph to modernize the venerable vertical A new all-alloy top end with 4 valves per with a new crank rods 59 hp. Designed with help Westlake, who was supposed to also be the However, it turned out that was also strapped for cash often place Triumph’s aside to take cash As the result, there were enough TSS 8-valve heads to demand.

Also, the Westlake heads to be porous leaked oil. Triumph had to take over of the top ends for themselves, just to supply. These bikes supposed to be very fast.

I with this bike above) on the recent Quail through the Carmel Hills. it wasn’t running right day was idling very high. But a historically-important motorcycle nonetheless. And he it.

How cool is that?

1983 Bonneville SPECIFICATIONS:

Norton water-cooled Classic


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