Cycle News - Archive Issues - 1970's

Cycle News 1977 03 16

Cycle News is a weekly magazine that covers all aspects of motorcycling including Supercross, Motocross and MotoGP as well as new motorcycles

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i Yoshimura .84SCC GS7S0 Suzuki: ~ t IAbove) Before the apex of t his practice turn, the Suzuki isn't dragging the pipe.. .vet. (Belowl "Open GP" is open to about everything. Note the flattened end of exhaust pipe on the bike 's right. IOO horsepower and fine handling make a competitive road racer and a very satisfying street bike. Fast , powerful modified street bikes that go like hell on the racetrack are nothing new. Lots of different tuners have built mildmannered streeters into wild-eyed screamers 8 that tear u p the drag strip and wai l around the road race circuit like rabid banshees . The Yoshimura R&D of America 845cc GS75 0 mak es about 100 horsepower (a gain of 40 bhp over the stock 60 bh p); tu rn s 11.52·second elapsed time. 118.5 7 mile per hour standing start qu a rt er mi les using stock gea ri ng and tires wit h an inexperienced d rag racer aboa rd ; and indicates 140 mi les per hour on the speedometer at the end of the Onta rio Motor Speedway straightaway. What sets th is bike apa rt is the fact that it ma kes a very satisfying - although expensive - street bike as well . _ The combination of an incrediblystrong motor and the sure handling of a GS750 is a winne r . Similar machines have won O pe n Production and O pen Su perst reet races at Ontario. a nd run as strong as all but the very few fastest mo dified Z·ls and KZI000 s. Wi th accessory shoc ks bolted on. the bike ex hi bits none of the fe roci ous wob bles th at pl agu e most big.bore street -bikes see n on road race cou rses. It costs about $1.000 to hire th e Pops Yoshimura crew to turn a stock GS750 into an 845cc power monster. The price incl udes 69mm three ring pistons (stock bore is 65mm) ; Yoshimura Road and Track cams and

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