November 2020
Bike Of The Month

images/botm/2020_11.jpg

1983 Suzuki GS1100E

Owner: BILL GREGORY
bill.gregory@sympatico.ca

ID #353

A Note From The Owner...

1983 GS1100E Restomod by ProtoWorks Mfg. Inc.

All work was performed by me and my son. We are both machinist’s & fabricators. The only original parts on this bike are the motor, gas tank and frame. The rest was procured from other bikes or fabricated & machined by us. I have owned various GS series bikes since 1978 and have always adored them for their overall performance, reliability and superb handling.

This most recent build represents a 2.5 year project we finished near the end of 2019. It was entered in the builder competition at the 2020 Motorcycle Supershow in Toronto where it earned a top 10 finish in the class it was entered.

What is most impressive about the older air-cooled big-bore engines is their low end torque. This bike, affectionately known as “The Tasmanian Devil”, can throttle wheelie from 3,500rpm without having to stab the throttle. Just roll it on firmly and hang on. The wide torque band and equally wide & sticky tires make it extremely fun to accelerate hard out of the corners.

Engine
• 1260cc big bore kit
• Web Cams – medium lift cams
• 36mm Mikuni RS36 flat slides
• Ported & polished head
• Barnett heavy duty clutch kit
• Custom fabricated exhaust system
• 3D printed velocity stacks (not shown)
• 165hp (estimated)

Machining
• CNC machined swing arm from 6060-T6 aluminum plate & assembled in 3 pieces
• Custom machined rear set
• Handlebar risers
• Headlight brackets

Electrical
• Dynatek S2000 digital ignition controller
• Anti-Gravity battery
• Motogadget M-unit solid state electrical circuit control unit
• Speedhut custom electronic tachometer & speedometer
• Complete electrical system re-wired
• 3D printed instrument housing

Fabrication
• Rear frame & aluminum fender assembly
• Hidden side stand
• Off-set primary sprocket

Suspension
• Yamaha R1 front suspension
• Yamaha R1 wheel set & brakes
• Pirelli Rosso 180mm rear tire & 130mm front

Paint Scheme
• Inspiration taken from the 2020 GSX-R 1000R