Confirming compression stroke

Hi Everyone,

Simple question. Just want to confirm that I am on the right track here as I am having a difficult time “feeling” compression through the no1 spark plug hole. Also dont have anybody around atm to bump the starter.

Here are my thoughts- at TDC on the compression stroke, both valves will be closed on no1 (loose rockers), just after the intake valve closes, and both valves would be open (split overlapped) on no6 (tight rockers). On the exhaust stroke, the opposite would be true...

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Author: kbiggar