The hissing sounds more like a whining sound in person and it isn't a factor of the cam lobe profile but how the cam is driven. Most bikes run timing chains, which unless they begin to fail, are virtually silent. These K series bikes, and bikes like my Honda VFR800 (pre-02) use gear driven camshafts. What you are hearing is the whine of the straight cut cam gears. The advantage of gears over chains is cam timing accuracy and durability.
the hissing sound is the way the engine is camed,it's a low-mid cam,the old K1 is a mid-high and sounds more like a modern day sportbike,i make a vid of my K11 with after market exhaust to show difference..nice looking K bike my friend
what a load of rubbish, k1100 motors have a cam chain at the front of motor.
the first hiss you hear. is the fuel pump, getting up to pressure.
nutkinscrat 8 months ago 2
wow thats a nice bike
Hennes003 9 months ago
The hissing sounds more like a whining sound in person and it isn't a factor of the cam lobe profile but how the cam is driven. Most bikes run timing chains, which unless they begin to fail, are virtually silent. These K series bikes, and bikes like my Honda VFR800 (pre-02) use gear driven camshafts. What you are hearing is the whine of the straight cut cam gears. The advantage of gears over chains is cam timing accuracy and durability.
84gsl 10 months ago
the hissing sound is the way the engine is camed,it's a low-mid cam,the old K1 is a mid-high and sounds more like a modern day sportbike,i make a vid of my K11 with after market exhaust to show difference..nice looking K bike my friend
THEOZ2106 1 year ago
What is that hissing sound?
sirNemanjapro 1 year ago
@sirNemanjapro
the "hissing" sound is the typical sound of a BMW K-series engine.
harrieke61 1 year ago