how much compression on 100 octane?

[91Saleen#15]

I'm rebuilding a 3.2 for my e30. I can get 100 octane unleaded readily. How much compression will that support? I was thinking 11.5:1. ???

[UDMRacing]

12.5/13.0:1 is about the limit for 93 octane pump gas, so 11.5 should be no problem on 100 octane.

[ak-]

How do you go about finding these things out anyway?

[UDMRacing]

http://www.faqs.org/faqs/autos/gasol...section-1.html.

[RedReplicant]

Are these things even knock limited?