You can't measure a cam like that, you need to measure the duration, lift & lobe centers to calculate the difference between the cams.

The OTR cam has proven to produce some good results, you will need a custom fuel map on a dyno to get the A/F ratio right.

Yes I know this is not the way of measuring cam. but compared to original it is about 2-3mm smaller and valve clearance adjusting screw must go out almost all the way. But OTR replayed that valve clearances should be same as factory. Thanks anyway.

No worries. Are you going to run your bike on the dyno? I would be keen to see a before & after result with the OTR cam.

Testing must wait warmer weather. Now here in Serbia is bellow zero. Btw I have Aprilia Pegaso Strada not XT. :occasion14:

Installation of cam is done. Drove almost 50km today and it is completely different bike. Almost the same at low revs but at the higher rev it start to pull like locomotive. Exhaust sound is much louder and the mechanical sound from the engine is more intense. Is it normal to have more noise from the engine? Some sort of clicking sound.

Yes quite normal with a high lift camshaft.

Yes I know it is normal to valve noise is increased but clicking sound what I hearing its not completely in sync with engine. Will check the valve clearances once more... How often do you check your valves?