is this compression ration calculator correct ?

[chamjisky]

hi
i am in the process of modding my bike . in the process i want to do some thematically work to avoid practically repeating again and again ..

so long and short i want to calculate the Compression ratio and found this calculator realy nice simple and understandable ...
but can somone help me if its correct ?

as i have taken the following readings and i am confused it shows the total displacement grossly wrong...

also a little explaination of the following two parameters would be excellant ..
1: Enter Piston Dome Volume In CCs Negative For Dished Pistons (Use '-')
2: Enter Piston Deck Clearance Negative If ABOVE Deck (Use '-') :

Engine Compression Ratio (CR) Calculator

a screenshot of the inputs is given below ..

the following data was entered for a flat top piston .. no valves pockets/releif.. and was flush with cylinder surface at TDC..

 

[Carlts]

Hey mate,
sorry I didn't realize you send me a visitor message till just now. PM me in future for a quicker response

The spam filter had auto moderated your post, believing it to be spam, sorry for the hassle mate, thread is restored.

Thanks,
Carlton