Rat Bastid
Dunamis Metron
Yes, you can make good power with compression ratios in the area you are considering.
But like everything else there are other things to think about.
Lower compression ratios have less expansion ratios. You can look that up on the web and read on it. Expansion ratio is something that needs to be considered.
Also lower compression ratios generate way more exhaust gas temperature than does a higher compression ratio. The less dense air/fuel mixture in the combustion chamber burns slower so it makes more heat later in the cycle.
Lower compression ratios also require much different timing curves, including total and initial. They can be very detonation sensitive so getting the timing right is important.
Cam timing is always critical. Just as much so with those compression ratios. Trapped volume is a big deal so you want to think about how the cam numbers affect how well the cylinder traps the air/fuel mixture.
Exhaust guides could possibly need a bit more clearance depending on the valves and guide materiel. This is due to the extra heat.
Just like anything else, the more time and study you put into your combination the better it will run and behave when you are done.
The end goal is the most cylinder pressure you generate without detonation. Lower compression ratios do not always mean an engine is less detonation sensitive.
