combustion chamber design

[4stroker]

the combustion chambers in my head on my new motor (rz350) have been machined to mimic 19cc pro design domes.

 

is this a good design and what compression ratio will it put me at? 66mm bore size...

 

also the barrels and head have been machined to use o-rings instead of gaskets, what are the pros cons of this and do i have to buy special high temp orings?

 

thanks, mark.

Edited July 22, 2007 by 4stroker

[wesw]

if possible get some domes that are designed for you porting and setup. the pd will work but custom domes will fit your setup a lot better.

[4stroker]

its not a pro design head with removable domes, so i cant just go and get different domes...

 

what im saying is the standard head has been machined, and the guy who did it copied the combustion chamber design from standard 19cc pro design domes.

 

i guess i will just have to take some measurement to figure out the exact design of the chambers and do a compression and squish check when i assemble the motor.

 

thanks, mark.