You are currently viewing our forum as a guest, which gives you limited access
to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join RX7Club.com today!
I'm certainly no expert on the topic, but the rotors are not particularly thick. The depth of the recess effects the compression ratio. For instance a S4 turbo rotor with 8.5:1 CR has a deeper recess than a Renesis rotor with a 10:1 CR. The displacement does not change from 1308cc when using one of those rotors compared to the other.
__________________
2006 RX-8 Shinka. Copper Red Mica.
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Changing the size of the bathtub has zero effect on displacement and lowers compression ratio. In other words, the engine will make less power than it did before, all other things being equal.
Displacement is swept volume; the difference between maximum and minimum volume. So milling more out of the rotors inceases total volume but swept volume stays the same... and swept volume is what determines how much air/fuel is being pumped in.
Here's an example... think of a very simple 1 cylinder engine. Say, 1 square inch of piston area, and 1 inch stroke. So it's moving 1 cubic inch every 2 revolutions. Well, now make it so the cylinder is 2 inches tall. The total volume is, at BDC, 2 cubic inches, but it's still only moving 1 cubic inch every 2 revolutions.
VERY simple make the chamber smaller , more compression means more power, quicker spool better response, less fuel, all the good things, but now control the DETONATION. nothing ever really changes on infernal combustion engines.
Linear Mode
