can i run a 12.5:1 piston on pump gas? what determines wheter it can run on pump gas or not?

 

no way thats happenin

 

compression, chamber design, quench/squish design, dynamic compression, octane of the pump gas, ignition timing, afr's, yada yada yada

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by oskie &raquo;</TD></TR><TR><TD CLASS="quote">no way thats happenin</TD></TR></TABLE>

dont bother posting if your going to be incorrect when doing so..

yes you can, its all in your tune. Im using a walbro 255iph fuel pump and 370cc delphi injectors and I have no knocking or pinging, not at high rpm or at all period..

btw, im tuned on 91 octane, so depending on where you live you might have a better resource for higher octane where you may live..

 

im running ctr pistons in my b18c5 block. No problems at all