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411 & 450 Himalayan & Scram / Re: Tec camshaft noise
« Last Post by SNK on Today at 10:25:15 am »I removed the TEC cam and installed the KENT, adjusted the valves at IN 0.08mm EXH 0,23mm (on the tight side)
the valvetrain noise when bike is hot is TERRIBLE!
I changed the oil grade from 15W50 to 10W60 (Motul 7100) valvetrain noise remained unchanged.
Manualy adjusted the Cam chain tentioned from 5 notches out to 8 notches oit no change at all.
Today i adjusted the ehaust valve at 0,15mm went for a ride of 20 kilometers and wen i returned i checked the exhaust valve wile engine was still hot (engine oil 68 Celcius, head about 108 Celcius).
The exhaust valve was at 0,20mm!!!
I had NO valvetrain noise when bike was cold and a lot lower when bike was hot but i REALLY CANNOT UNDERSTAND how is this
possible and Exhaust valve clearance increases when bike is hot.
With my above experiment i can understand why the tip of the valve in many Himalayans making a dent by the rocker arm adjustment!
I am wondering if i adjust the Exhaust valve at 0,10mm cold then when it will be hot and go to about 0,15mm it will make no noise...
Your thought will be highly appreciated.
the valvetrain noise when bike is hot is TERRIBLE!
I changed the oil grade from 15W50 to 10W60 (Motul 7100) valvetrain noise remained unchanged.
Manualy adjusted the Cam chain tentioned from 5 notches out to 8 notches oit no change at all.
Today i adjusted the ehaust valve at 0,15mm went for a ride of 20 kilometers and wen i returned i checked the exhaust valve wile engine was still hot (engine oil 68 Celcius, head about 108 Celcius).
The exhaust valve was at 0,20mm!!!
I had NO valvetrain noise when bike was cold and a lot lower when bike was hot but i REALLY CANNOT UNDERSTAND how is this
possible and Exhaust valve clearance increases when bike is hot.
With my above experiment i can understand why the tip of the valve in many Himalayans making a dent by the rocker arm adjustment!
I am wondering if i adjust the Exhaust valve at 0,10mm cold then when it will be hot and go to about 0,15mm it will make no noise...
Your thought will be highly appreciated.