1998 JDM ITR, want to put skunk 2 stage 2 cams, cam gears,full port and polish,rc 310cc injectors, and already have JDM DC 4-1 header. The question is I want to put a 2 layer honda head gasket with shaving the head 15 thousandths, to give me a 12:1 compression ratio. Is this too high for 93 octane, and or possible 91, or am I dreaming and asking for detenation?? This will all be tuned with hondata also.

 

Its very possible. Get to 12.5:1 and come back with this question. Otherwise you will be okay. Be sure your tuner knows what he is doing which I am sure he does.

 

fine for the street, but I wouldnt run anything less than 93oct and make sure you have a good tuner.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by migs &raquo;</TD></TR><TR><TD CLASS="quote"> Be sure your tuner knows what he is doing which I am sure he does. </TD></TR></TABLE>

Agreed

 

Tuning is definitely key. I ran 12:5:1 on $hitty cali 91 octane without any issues.

 

its fine

 

Thanks all, the actual compression is 11.89-1 (cspeed) I live in Sudbury ON. where 93 is VERY hard to come by and 91 is the premium here!! so 91 should be ok? Last thing is should I tune at the dyno in waterloo on 91, as this is what I will be running mostly??

 

yes, definitely tune with 91!

 

you live in ontario canada right.
so you should be able to get 94 octane from sunoco, thats the only place i go to get gas.

 

tuning tuning tuning , and it can be done on the street

 

I wish there was a sunoco here but the closest one is close to Barrie which is 3hrs south from Sudbury!! LOL , but ya your right I always go to sunoco when I go down south