would a 11.3:1 - 11.6:1 compression ratio be safe to run on 91 octane if tuned properly?

11.3 = 3 layer head gasket
11.6 = 2 layer head gasket

 

yes

 

si.

 

i run 11.8 on 91 on octane daily. You will be good, just need a tune.

 

Thanks

 

I run it daily and no detonation EVER.

 

that 2 layer, do you plan on using an oem 3 layer with 1 layer removed? I've gone through 2 of those, they did not hold up for me on the road courses.

 

11.8 , make sure u find a good tuner like i did

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eyal 951 &raquo;</TD></TR><TR><TD CLASS="quote">that 2 layer, do you plan on using an oem 3 layer with 1 layer removed? I've gone through 2 of those, they did not hold up for me on the road courses.</TD></TR></TABLE>

Nope, probably a mugen or spoon.

 

With good tuning you could go up to 12.1 but your going to have those days where someone's knocking at your door.

 

I don't know how well it will do on the sniffer when smog time comes, but I would think you should be ok. You guys know stock Celica GTS engines run 11.5:1, right? So yeah, its possible on 91 octane.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BeniRacing &raquo;</TD></TR><TR><TD CLASS="quote">i run 11.8 on 91 on octane daily. You will be good, just need a tune.</TD></TR></TABLE>

some colder plugs wouldn't hurt either.