Been doing some reading on the subject of compression vs. boost. Just a few questions though.

So, say you have a build running a JRSC on a D16A6. It's running say a 10lb pulley, will be fully tuned. X/Y/Z brands for I/H/E. Fuel is E85. Would it make more power on say 11:1 compression than on 9:1 compression?

Now, same setup and scenario, but we're running say 8lbs of boost. Which would make more power, the 11:1 or the 9:11 compression?

From my understanding where you raise cylender pressures to raise power output (and torque), the higher compression will make more power, on both 8lbs and 10lbs of boost, right?

Found a short thing on Team Integra, and it suggested that you would have higher dynamic compression on say like 8lbs and 11:1 compression than on 10lbs and 9:11 compression, and thus make more power.

Okay, so with all that said, say I'd be running a JRSC Setup or a small turbo where turning up the boost will only blow hot air and wouldn't return more power, would I want more compression (like say 11:1 vs 9:1)? Keep in mind this would be running on E85 which is 105(?) octane fuel.

The numbers may not be all that correct, but it makes it easy to think about.

 

First of the JRSC are very small CFM blower. The D series are M45 and there tiny.

You would be best to go with a 10.5-11:1 motor and hondata s300 to make good power.

I would go with the 11:1 motor personaly. You will get more power and better all around.

 

I agree, 9:1 is too low. Go with 10.5-11 depending on your power goal. Keep in mind this is on E85 (which is 105 octane), if you run 91 octane you dont want as high

 

So, JRSC on D16, tuned (chiped ECU) on E85, highest 'safe' compression?

 

Even 10.5 is not alot of compression for 91 octane its just in the tune. But tunner needs to watch bottom end timing.