NoPistons -Mazda Rx7 & Rx8 Rotary Forum

Quote:

Originally Posted by twstdmtl' date='Jun 29 2004, 03:46 AM

https://www.nopistons.com/forums/pub...>/rolleyes.gif Perhaps the intraweb, a textbook or an engineering student can help you with this... Since EVERY internal combustion engine has an SCR. Maybe your thinking of something else and calling it static compression ratio.

What compression ratio and how many pounds of boost did you say your running?

dude, the static compression ratio is the difference between when the chamber is biggest (bdc) and when its the smallest (tdc), you dont have to start the engine to figure it out. in fact starting the engine wont help you figure it out.

the actual cr seems to have little to do with detonation anyways. the 4.5l mercedes v8 has 8:1 compression non turbo, they need 91 octane fuel not to ping, honda ran the turbo f1 cars @65psi on 9.5:1 compression