Compression V's Octane rating

[Gold TX Sleeper]

Whats a reasonably safe compression ratio to run on pump fuel ? How high can you go reliably with Super ? I've read about standard engines with 10:1 on Optimax or a similar premium. I only run the premium unleaded with a bottle of Pro Strength Octane Booster on weekends when street racing but run super during the week, so how high could i jack up the ratio while only feeding it Super & Optimax on the weekends without hitting reliability/detonation issues?
Cheers,
Jasyn...

[MatMan]

Depends on your timing as well, just FYI

[Mooch]

and ur camshaft overlap. I'd go 9.5:1 to be safe, and run pulp. Drop a catalytic converter in ur exhaust and change the fuel filler neck.

Mooch

[Gold TX Sleeper]

I've been told that a higher rating gives me the scope to advance the timing by a few degrees ? Is there a guideline to follow with a certain octane rating and ignition timing. I still haven't been taught what total timing and all that sort of jargon means, all i know is the basics of undoing the nut on my dizzy and advancing and retarding with a timing light. Could you shed a little light on this subject for me?
Cheers,
Jasyn...
P.S Once upon a time i asked if anyone knew roughly what the compression ratio would be with an 1800 head on a G200 block (all standard including gasket). Do you have any ideas on what it may be ?

[Slug]

Optimax will tolerate an 11:1 comp maybe a little higher with a good ECU and super will should be good for about 10.7:1 once again a little higher with a good ECU... Michael

[Gold TX Sleeper]

Cheers... I'll try to get it into the 9:1 to 9.5:1 range. It should be sufficient and reliable enough to keep using the same diet of fuel i'm feeding it without any dramas and a bit of a hike in power.
Jasyn...