Subject	It's all about compression and >>>
Posted by	Barry'Z(FtLee,NJ) on April 16, 2001 at 1:00 PM
	This message has been viewed 15 times.
In Reply To	see, thats what i was thinking. 3-4psi was hypothedical (sp? posted by dogpile on April 16, 2001 at 11:57 AM
Message	A TT has a lower compression ratio than a N/A because the input mixture is already under pressure. If you pressurize the input mixture to a high degree you need to lower the amount of compression in the cylinder so the mixture won't combust before the spark ignites it. As to the exact numbers, you'd need to sit down with a calculator and some info about A/F mixture and combustibility of that mixture under pressure to figure out what compression ratio to build the engine to and how much boost to run. Z Ya Barry'Z '95 2+2 n/a Member # 0451 Member NJ Z Car Club Member Bob Sharp Z Car Club Member # 10760