see the comparison here mere bhai
first thing is R1 is supersports and z1000 is standardbike
so z1000 ka R1 se koi muqabla hi nai hai both ar different category bikes
Kawasaki Z1000 81 lb-ft @ 7,800 rpm
Yahama R1 84.6 ft-lbs @ 10,000 rpm
Kwawa 38mm Fuel injector hai Yamaha 45mm Throttle body pe hai
see the bore and stroke also
Yamaha 1mm bore zada hai
and kawasaki 4mm stroke zada hai
so the compression was wrong
humne R1 discuss ki hai R6 bht dooooor hai
agar R6 itni hi fast hoti to Yamaha R1 kyun banati