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-   -   What to build compression ratio to? (http://forum.e46fanatics.com/showthread.php?t=972468)

mkodama 02-22-2013 02:40 AM

What to build compression ratio to?
How do you determine what the static compression ratio should be when designing and building an engine?

mkodama 02-22-2013 03:08 AM

My order of operations would be something like:

0. Decide budget.
1. Determine what RPM to make peak power.
2. Find or have a camshaft made that will make peak power at that RPM.
3. Determine what type of fuel will be used find an appropriate dynamic compression ratio to run with that fuel.
4. Use camshaft specs and desired dynamic compression ratio to get the correction static compression ratio.


mkodama 02-24-2013 03:36 AM


jared_wiesner 02-24-2013 01:09 PM

Sounds like a good way to plan an engine build.... You've got the main points covered

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