Suzuki only had 8 machines in their 1984 line-up, with only 3 being street bikes. With the onslaught of the new and improved sport bikes the only choice was to go big or go home and that is what Suzuki did!

The big news at Suzuki was the launch of the GS1150E. The enlarged engine was reworked from the GS1100's with a bore of 74mm (2mm larger) with the same stroke of 66mm making the displacement 1135cc and a compression of 9.7:1.  This 16 valve big bore, with the Twin Swirl Combustion Chamber (TSCC), was fed by 4 36mm Mikuni CV carbs.  There was an all new Nippondenso oil cooler and a larger sump that would hold 4.2 quarts of oil (compared to 3.4 quarts on the 1100).

It had a redesigned clutch with a larger backing plate and gear assembly.  The clutch gear had two more teeth and the crank shaft gear had one more tooth, altering the final drive ratio from 1.775:1 to 1.780:1.  Also the 20 clutch plates had been replaced with 17 slightly thicker plates.  The new clutch plates along with the larger and stronger backing plate eliminated warpage do to heat and stopped the clutch from sticking.

It was placed in an all new chassis, with square tube steel frame and single shock full floater rear suspension that had adjustments for preload and dampening.  They also had an all new fork that also had a fully adjustable preload and dampener.  The dampener also doubled as a blow off for the bikes anti dive mechanism.

In 1984 the GS1150ES was the fastest production motorcycle available. The 1150 didn't need any tricks to attain such figures... the power was spread all the way across the range, and was very easy to utilize. New brakes, wheels and tires were also fitted. The GS1150 was a large, long and heavy motorcycle. It's detractors loved the engine, but the weight handicap was hard to overcome, especially as the competition in this class was so steep.

Power in 1984 was 119bhp@8500rpm, with torque of 81ft/lb's@6500rpm. Wet weight was 557lb's.

The previous information was taken from from magazines and books from 84-85.  I actually have some mags and the original shop manual that came with my bike.