Compression pressure

[smokieDT125r]

Hi Does anyone know what the compression should read on a gauge for a std DT125R with powevalve open?

[arno]

when I've started my engine (with starter,no kick),I've read 8-8.5 bars but at this rpm the powervalve is closed.
I don't know the pression when the power valve is open.
tomorrow,if I've the time I'll see this cause today I'm overbooking

[arno]

conditions of test,engine cold with reed valve,carb,without airbox
open exhaust valve : 8 bars
the same but without exhaust system : 7.5 bars
my system exhaust is the original with catalyse

[smokieDT125r]

Merci mon amie . Mine is 8 bar too

[arno]

ami,it's better

[smokieDT125r]

pardonnez-moi monsieur très désolé