I recently took my dad's unused pulsar 180cc and gave it an overhaul.I replaced the carburettor,airfilter,spark plugs and clutch plates.But the bike doesn't run like other motorcycles of the same model.
I can't cross 110 kmph even on a sloping gradient with no headwind while the top speed of a pulsar 180 is 125kmph.I also find the speeds don't match the rpms.
It does 80kmph@7000rpm with 10kmph rise for every 1000rpm until it hits 9500 rpm redline at 5th gear.It is supposed to do 90kmph @ 7000rpm and 105kmph @ 8000rpm at 5th gear.
Its power and torque are 16.5ps @ 8000rpm and 15.22Nm @ 6000rpm.
The 5th gear ratio is 8.98:1 (24/26) ,the final drive ratio is 2.80:1 (43/15) and primary reduction 3.47:1 (66/19).
I thought the problem was clutch slippage and replaced the worn out clutch plates but the problem still persists.The clutch lever free play is according to specs in the owners manual.Even the dealership isn't able to identify the problem.
Would be grateful if somebody can identify the cause and suggest a fix.