Yamaha : Yzf-r R1
Posting ads for 47 years
I have blue yamaha YZF-R R1 for sale,
Ultra-lightweight, compact, 998cc, DOHC, 20-valve, liquid-cooled, in-line four-cylinder engine produces an incredible 180 horsepower (ram air) 172 horsepower (no ram air) at an amazing
12,500rpm. cylinder head design utilizes new valves, valve angles, re-designed squish area, and new intake and exhaust ports for increased performance.
Steep valve angles (intake 1 = 8.75 degrees / intake 2 = 15.75 and exhaust = 11 degrees) produce a more compact combustion chamber.
Squish area has been optimized for maximum engine performance. The compression ratio is 12.4:1. Special lightweight, high lift, high performance intake and exhaust cams. Bore and stroke dimension are 77 x 53.6mm. Revised short skirt, lightweight piston design features special ribs in the piston pin area for great rigidity. Connecting rods are carburized and use a nutless design. The lower end 'cap' of the rod is made from the same piece of material as the upper portion, this design is known as 'fracture splitting' and the upper rod and lower cap must remain as a set. This design aids establishing true big end roundness. Closed deck cylinder design allows the cylinders to spaced more closely together, allowing a narrower engine package. The cylinder block is a stand-alone piece. The benefit if this design is improved sealing, and to improve serviceability.
Ceramic composite cylinder bores ensure great heat dissipation for consistent power delivery and reduced friction. Lightweight crankshaft means super quick engine response. The ACM or alternator
is located on the backside of the cylinder block to reduce crankcase width thereby maintaining the ability for very aggressive lean angles and a low center of gravity. The compact ACM uses rare earth
magnets and spins at 1.24 times the engine rpm to produce ample electrical current to power the bikes electrical requirements.
northern virginia, va