Try this: Take a syringe (or suction gun) and suck it full of air, then cap off the end and push it tight to see how much pressure you get. Next, block off about 1/2 of the end and pull it out, quickly cap off the end (so there is still vacuum inside) and see how much pressure you get. Light bulb go on yet as to how VE works? Restricting the flow of air in (remember the motor only has a split second to draw that air in) leaves a partial vacuum in the cylinder before the valve closes and the piston compresses the air/fuel mix. \\ If that doesn't light up the dark, try breathing in through a straw. If you don't pass out, try running while breathing through the straw! LOL! Jim Blair, Lynnwood, WA '87 Comanche, '83 Jeep J10, '84 Jeep J10 From: Matt Haas Subject: Re: [Amc-list] LPG 258 To: "AMC/Rambler owners, drivers and fans." Message-ID: Content-Type: text/plain; charset=ISO-8859-1; format=flowed So what you are saying is that the cylinder pressure is higher because you can get more air into the cylinder to compress, correct? I honestly do understand that and it's why turbo and super chargers make more power but you still haven't altered the size of the cylinder so the compression ratio hasn't changed. Matt _________________________________________________________________ Stay up to date on your PC, the Web, and your mobile phone with Windows Live. http://clk.atdmt.com/MRT/go/msnnkwxp1020093185mrt/direct/01/ _______________________________________________ Amc-list mailing list Amc-list@xxxxxxxxxxxx http://splatter.wps.com/cgi-bin/mailman/listinfo/amc-list